How an antenna receives signal?
An antenna is built and tuned specifically to resonate at a certain frequency or set of frequencies. In receiving, this resonance will appear as an RF voltage across the antenna, or between the antenna and ground. This RF voltage is usually modulated in order to carry information, for example a radio station. You generally use a receiver of some kind to "decode" this information, and make it usable to humans again, for example, play the music as audio through a loudspeaker.
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Answer . Tall buildings, mountains, and other large objects, even highway overpasses, can interefere with or interrupt the GPS signal. A GPS receiver must have a clear line-of-sight with the satellites to work properly. If the signal is blocked by an object, it will be re-established once t…he object is gone or cleared generally in a matter of seconds. \n. \nBecause this signal interference does occur, most GPS Navigation systems also work using dead reckoning and map matching. \n . Dead reckoning is a method of navigation, used commonly by ships and aircraft, in which the distance and direction traveled from a previous position are used to estimate the current position. \n . Map matching compares the movement of the vehicle with the last known mapped position and maps of the area to determine the current position. \n . \nAs far as interference from other types of signals, heres some quick background on radio signals. These signals, like sound, light and other electromagnetic waves are measured in hertz (Hz), which is the frequency or number of cycles of the waveform or signal that occur per second. They are grouped in bands and generally defined, in MegaHertz (MHz) or 1.000,000 Hz, as:\n. \nLF (Low Frequency): 0.03 0.3 MHz\nMF (Medium Frequency): 0.3 3 MHz\nHF (High Frequency): 3 30 MHz\nVHF (Very High Frequency): 30 300 MHz\nUHF (Ultra High Frequency): 300 1000 MHz\n. \nWhere do radio stations, CB radios, cell phones, etc. fall? The common bands for these are:\n. \n . Radio stations\n AM: .5 - 1.7 MHz \nFM: 88 MHz to 108 MHz\n . CB radio 26.9 - 27.4 MHz \n . Television stations \n Channels 2 thru 6: 54 - 88 MHz \nChannels 7 thru 13: 174 - 220 MHz \n . Garage door openers, alarm systems: 40 MHz \n . Cordless phones: standard is 40 - 50 MHz, but 900 MHz are available\n . Cell phones: 824 - 849 MHz \n . \nThe GPS system operates in the L-Band, in the range of 1 2 GHz or 1,000 MHz. There are currently two signals sent in the GPS system: L1 And L2 signals. The L1 signal is the primary signal transmitted at 1575.42 MHz, while the L2 signal is transmitted at 1227.60 MHz.\n. \nAll of the satellites transmit on these two bands; however, they vary in the code they transmit. The two types of code sent are the following:\n. \n . C/A Code, or coarse/acquisition code, which is a sequence of 1023 pseudorandom binary numbers which are sent in different phases within the GPS carrier signal, repeating every 1 millisecond. It is also sometimes referred to as the civilian code.\n . \n . P-code, or precision code, is accessible by the U.S. military, the military of U.S. allied nations, and other government approved organization. Its code sequence is much longer than that of the C/A code repeats every 260-270 days. \n . \nThe L1 signal carries both the C/A and P codes; the L2 signal carries only the P code.\n. \nThe possibility for radio or other signals to interfere with the GPS signals is relatively low. However, if a GPS system is not properly installed in a vehicle, the chance for interference is higher. Therefore, many manufacturers discourage individuals from doing the installation themselves.\n. \nOne of the more common sources of intereference recently has been satalite radio recievers. Proper installation of both units is required as they can and have interfered with each other. (MORE)
Answer . For a laptop (or any computer) to receive signals from a satellite you must add a receiver card. This could be external (USB interface) or internal (PCMCIA for a laptop, PCI for a regular PC). The receiver card has to be fed signals from a satellite antenna or a satellite dish with ampli…fier converter, known as an LNB.\n. \nYou do not say what signal you want from the satellite. You can watch TV or download data using a satellite receiver card, for this you will need a subscription with a satellite ADSL provider, who will also offer you the card and the software. (MORE)
1996 Chrysler LHS radio powers on but not able to receive signal only for short period of time then cuts off and you get static Could this be antenna problem or ground wire problem Fuse checks out.?
I have had this exact problem. In my case, it was the antenna connector on the radio itself. It needs to be resoldered on the radio and then it will work just fine. - RL
What can I do to fix this everytime I key up my CB radio it causes my GPS receiver to lose signal and I have to unplug it and plug it in again to get signal back GPS is outside opposite of antennae?
Answer . There is no way to solve the problem. Because of the high power of the CB transmitter and the low power of the satellite signals, the CB signal clips the GPS receiver, and it can even damage your GPS.. More . The CB and the GPS unit work on entirely different frequencies, to be sure,… but the fact that a several watt transmitter of any kind is right on top of a GPS unit can hammer the GPS. There is no way to "limit" the radiated power of the CB (if you still want it to work) so that it won't affect the GPS. (MORE)
Antennas transfer energy from a cable into the airwaves efficiently. Any transmit antenna can also be a receive antenna and viceversa. If you wish to transmit high power from an antenna, usually heat generation or high voltage is a concern that can destroy the antenna. To prevent problems, high powe…r antennas require thicker wires and sometimes insulators to prevent overheating/burning and arcing. Many antennas can simply be made of wire of a simple length and they'll be very efficient. The length of an antenna changes it's efficiency to the cable. If you want the antenna to be efficient, you must size it to match the cable impedance. Usually the length of a single wire exiting above a metal plate is one quarter wavelength or 1/4 x 11,803/frequency in megahertz. For FM radio on an automobile, some antennas have motors that extend out of the body of the car. The height (inches) should be 1/4 x 11,803/100 megahertz or just under 30 inches. TV antennas above a house are most often a set of half wavelength wires, so change the 1/4 to 1/2 in the formula above. They use many different wire lengths to cover all the frequencies in the television band, which extends from about 50 megahertz to around 600 megahertz. Cell phone frequencies were picked partly to make the antennas small and partly so that cell phone reception can enter buildings with rebar reinforcement. Cell phone frequencies are roughly 800 megahertz and 1800 megahertz. Receiver antennas are often made smaller than either transmit or transceiver antennas. If you open up the back of an older transistor radio, you are likely to find a bar made of ferrite material with an insulator and wire wrapped around that. The wire is wrapped a number of turns to match the impedance required by the circuit. The ferrite bar is able to focus signals to itself which in turn induces a current in the coil. While impedance is an important issue, simple dipole antennas can be sized by the 468/Frequency in mHz formula. It will give the the length of an antenna in feet. You divide the outcome by 2 to find out what each side length should be. The impedance of an antenna can ofter be adjusted by its shape. The 90 degree V shape yields a near perfect 50 ohms impedance which is commonly used for transmitters and transceivers where as the flat top diode has a higher impedance. The ARRL has good books on antennas. You might want to go to the library and look at a few of them. (MORE)
Yes, you will typically lose signal strength using a four waysplitter, especially if the signal coming into the home is weak tobegin with. Each split results in a decrease in signal strength.
A television signal contains a voice component which is an FM signal, and a video component which is an AM signal. The TV transmitter basically combines the voice and video information and puts it onto what is called a carrier wave for transmission into the air. Think of a car that is used to delive…r a bag of groceries and a bag of hardware to a house, both accomplished at the same time. The carrier wave is what is sent into the air from the television tower. A TV receiver basically separates the voice and video info from the carrier, processes whats left, sends the video to the screen and the sound to a speaker. Now the circuits that accomplish that miracle are very complex, and my explanation is very simple. There are many good WEB sites and books on the subject. A understanding of basic electronics would go a long way in helping to grasp the principals. Cool right! (MORE)
Do you need antenna to receive digital signals on LCD TV the TV has a built in HDTuner Can we use indoor antenna?
All TVs including new ATSC Digital ones use the same frequencies as older NTSC Analog sets. An amplified antenna is recommended because there is a threshold where a weak analog signal will be visible (with considerable static) but a digital tuner will not have sufficient strength to display a digita…l (no noise or static) picture. Outdoor roof Antennas work great as well, you don't need an HDTV antenna, discount stores should have one for around $30. (MORE)
I'm not an electronic whiz by ANY means, but if I'm correct...Transmitters do the sending and antennas do the receiving.
It depends on six factors: 1. Transmitter power, 2. Transmitting antenna, 3. Receiving antenna, 4. Receiver sensitivity, 5. Frequency and type of operation, 6. Any land or obstacles between the two radios. The deep space probe that passed by jupiter, neptune and the outer planet…s was still sending from billions of kilometres away. A small iPod FM transmitter, such as the ones used to broadcast fro an iPod to a car radio have a range of less than ten metres. 2.4 GHz Wi-Wi can have a range as small as one room (depending on building construction) or hundreds of kilometres with large antennas sited on mountain tops. Generally? Don't believe sales hype - ask somebody who uses similar equipment, or ask to test the gear yourself under the conditions you expect to use it in. ======= Another contributor provided a benchmark: As of December 2010, the Voyager I spacecraft, launched by NASA in September 1977, is still operating, and communicating with earth by radio, from its position on the 'edge' of interstellar space, presently about 10.6 billion miles from us. (MORE)
That depends. The ipod nano 5th generation can receive radio signals. an ipod touch can also, but you have to buy a certain app
In a neuron , the dendrite receives a signal from an axon terminal of a neuron through a synapse .
Actually all cells can send and receive signals. For example every cell has a CD95(FASr) which receives signals from natural killer cells or T cells and results in cell death. Also all cells send signals through cell membrane receptors to neighboring cells. These signals prevent neighboring cell …colonies from growing too big.(The lack of these signals is one of the problems with certain cancer cells) (MORE)
Yes, the amplified antenna will sometimes make the TV set work where a unpowered will not.
The on screen signal strength meter will help find the direction your antenna should point. Turn the antenna until you see the highest meter reading.
\n. \n. \nThe short answer is , metal antenna elements are tuned by length and diameter to resonate at a electro magnetic frequencies of the tv channels. The vibrating electrons vibrate each other , even over long distance. Some every day examples of this are , electric guitar , the electrons i…n a vibrating metal string vibrate the electrons in the electro magnet under the metal string, and this vibrating electron energy is connected to a amplifier. A simpler example is a 'toaster' , the vibrating 'electrons/electric' flowing through the wires in the toaster make the electrons in the wires vibrate very fast and with a lot of energy and this is high rate of friction between the electrons makes heat. Friction makes Heat and light , light is vibrating electrons vibrating at a rate/frequency that you can see with your eyes The same thing in a light bulb. The resistance of tungsten wire to the to the vibrating electrons causes more friction and this makes heat and light. Electricity , is in fact vibrating electrons. The different rates of vibration convey different information. Type of information are in fact , heat or light. Radio or Television or Etc,. (MORE)
\nNo. There will be no analog signal to receive and process from the outdoor antenna. The only signal coming from the outdoor antenna will be digital. When the conversion is complete. You will need to hook up your antenna directly to the TV. Your conversion box will be worthless as far as analog to …digital is concerned. (MORE)
When a net current flows from point A to point B (i.e. there is a net flow of electrons induced by a potential difference), the net movement of the electrons creates an electromagnetic field which can be described by the set of vector equations published by James Maxwell in 1873. In the simplest …case imagine a coil of wire. Pass a current through the coil, a magnetic field is induced and metal objects can be picked up. The reverse is also true, move a magnet through the coil and a voltage (electric field) is induced causing a current to flow through the coil. Hence electric fields and magnetic fields are interrelated, one causes the other and vice versa. In fact an electric field in direction x causes a magnetic field at 90 degrees to it in direction y. When a sinusoidal alternating current is passed along a conductor, an alternating electro-magnetic field is created at the same frequency as the alternating current. This electromagnetic field propagates in direction z (in a vacuum) at the speed of light C, and the magnetic field can be regarded as polarised in direction x and the electric field can be regarded as polarised in direction y. The electric field and the magnetic field are exactly 90 degrees out of phase. Because when the electric field reaches its peak amplitude, the magnetic field is momentarily zero, and when the magnetic field is at peak amplitude, the electric field is momentarily zero. In fact the rate of change of one field causes the other field. That is basically the principal of an antenna or aerial. A wire suspended at 90 degrees to the ground, through which an alternating current is passed will cause an electromagnetic field to be induced. The field will propagate in a circular fashion, the waves radiating outward radially, so that the wave propagation front is a circle parallel to the ground with the centre at the aerial. More complex antennae can be designed that focus the electromagnetic energy so that it propagates in a focussed direction. This answer provided by Rob Sherratt, 18th Jul 2009 (MORE)
If you run the antenna under test in the receiving mode, then while it is rotated, you'll monitor signals received by the antenna under test.. If you run the antenna under test in the transmit mode, then while you rotate it, you'll monitor signals received by a different antenna on the test range….. Either way, the varying signal must be monitored at the receiving end of the link.. It's a lot more convenient, and a simpler configuration, to have the signal monitor and the rotation/excitation controls for the antenna under test in the same place , in order to react appropriately to any funny things noted during the test run. (MORE)
To transmit and receive signals to and from multiple nodes in a three-story house what type of antenna should an access point use.?
You should buy an omnidirectional antenna with a high gain (measured in dBi) if you have a wireless G or B router. If not, I recommend you to buy a wireless N router that comes with 3 antennas. It really increases your signal strength and range. You don't need to have a wireless N adapter to use it,… as it supports the older modulations (MORE)
I think the question needs to know how to increase signal strength from Receiving Antenna. 1. Use Better and bigger Ground. This will not only increase signal but will also increase S/N ratio. 2. Generally increasing the size of antenna helps. 3. Use elements that can increase the effective are…a of the antenna. 4. Ensure that the antenna is well matched to the feeder feeding the RF signal. (MORE)
Yes, a UHF antenna can pick up VHF signals, but not well. The size difference makes the uhf antenna "inefficient" for the longer vhf wave length, but some energy can be received by the uhf antenna.
Yes. An antenna is only used to receive or send a signal. A RF signal travels throughout any air medium independently of the existence or not of an antenna. Of course you will need an antenna if you want to receive the signal (which has to have, by the way, more or less the same lenght of the …wavelength of the RF signal), but the propagation of a electromagnetic wave doesn't need a physical support. You can see an example with the radiotelescopes. They receive signals which come from the outer space without any physical support. Electromagnetic waves (and RF signal is one kind of them) doesn't need any physical media to travel (they travel in vacuum too!) (MORE)
To receive a Satellite signal, you need a LNB which is attached to your satellite dish--The LNB and dish is determined by which satellite TV service you have--either Dish Network or DirecTV. The satellite dish is pointed in a particular direction to pick up the correct satellite orbiting the sky. Yo…u will also need a satellite receiver, which is "wired" to the LNB and also is attached to your television. (MORE)
They're essentially two walkie-talkies in the same case ! Thesignal is digitally encoded (and encrypted), then the signal istransmitted to the nearest phone mast. The mast relays the signalacross a number of cells until it is received by the other phone.
I persume you mean the Giant Meterwave Radio Telescope (GMRT) in India. The way a received signal is processed is equivalent to the working principle of a double-super-heterodyne-receiver. That means that a received signal is filtered, mixed with another frequency and filtered again to downscale it …for transport from telescope antenna to the observation room...here it is mixed and filtered again so that the signal is be downconverted for recording and data analisys. (MORE)
The dendrites , which are the branch like extensions of the neuron, receive the signals.
They don't work very well because they are not made for the TV band of frequencies.
Most toys have a very poor antenna so simply making it bigger may give you an improvement. What actually are you trying to achieve? Is it a greater distance between transmitter and receiver ?
The Global Positioning System (GPS) consists of 24 satellites that orbit the Earth at a height of 20,000 km. Receivers at stations on Earth (such as WES2 in Westport, Massachusetts) use the signals from satellites to calculate the location of the station. Geoscientists have set up a network of targe…ts all over the world in order to monitor the movement of lithospheric plates. Steel spikes pounded into the ground (preferably embedded in solid rock) make up the targets. A high-precision GPS receiver is then mounted on a tripod and positioned directly above the target. The targets are revisited over a period of months or years. The receiver measures the distance to four or more GPS satellites and then uses stored data on satellite locations to compute the location of the target. Changes in horizontal and vertical positions can be detected within several millimeters. (MORE)
The size of an antenna depends upon the frequecny of the RF signal and the gain.
Any antenna can receive anything, but not very well unless it's the correct length for the frequency you're trying to receive. Yes, this antenna will work well so you will not need a special FM only antenna.
The half-wave, center-fed 'dipole' antenna is probably the antenna that's simplest to design, and easiest to build and operate. For 100 MHz, it's a single wire, supported at its ends and insulated from the supports, hung horizontally, opened and connected to a 75-ohm coaxial cable at its cent…er, with an overall length of 4 feet 11 inches (1.5 meters). (MORE)
No. Satellite signals are very weak- after all, they are small devices, trying to spray a signal all over a continent. To pick them up requires an antenna pointed directly at them (no fun watching five satellites at the same time!) and a bulky bit of technology called a "low noise amplifier". Neithe…r could be built into an LCD TV. Sorry. (MORE)
The LNB attached to the arm on the dish along with the receiver decodes the signal beamed down from the satellite in outer space. The smart card inside the receiver holds the information for the programming package you subscribe to allowing you to view your program.
The carrier waves are electromagnetic in nature, and it is the modulation of them that carries the information. There are several methods of modulation, FM, AM, Pulse-code, and many more. The digital signals are modulated on the carrier wave. And digital signals should theoretically be more immune… to interference than analog ones. (MORE)
By remote antenna, do you mean Over The Air (OTA). For the OTA, some receivers have a coax port on the back, TV antenna, where you can connect an outside antenna. From the receiver menu, you can scan the OTA channels into the receiver once the receiver has found the OTA channels. If this is not what… you are asking, please let me know. Thanks. (MORE)
In a properly matched antenna, signal does not reflect back - the transmission line and antenna combination is seen, electrically, as an infinite line - so there is no reflection - again, when properly matched.
The rabbit antenna needs to be turned the right direction and have the two elements spread to collect enough RF signal. Powered antennas are best in some cases, that is ones that plug in to the ac wall socket. Also check the cable connection into the tv set antenna connector.
From the electrical source from 'telephone poles' because they connect to things in the phone that transmits a signal to you phone so I'm guessing that's how -he fingers it
The cell phone doesn't receive signal it the sim card which received it .sim card get it signal form the geo stationary satelite situated in the sky at the angle of 120' making a triangle which cover the whole world .
To cut a wire or aluminium tubing length for a dipole antenna take your frequency in Megahertz that you want to tune the antenna to and divide that number by 468. This will be the full wave length of the frequency you will be tuning to. For general purpose listening cut the antenna to mid frequency …of the FM band. Cut this wire (or tubing) into two equal pieces. This will be the driven element feed point. For a yagi antenna cut a reflector 10% larger that the first cut and place it 1/2 wavelength behind the driven element on the boom. For the director cut the wire length (or tubing) 10% smaller that the driven element and place it on the boom 1/2 wavelength in front of the driven element. This will give you a three element yagi antenna. (MORE)
A receiving antenna does "re-radiate" some of the power it receives, but not all. Some of the power it receives proceeds into the receiver ... which is the only way we detect the signal being received by the antenna.
Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they …are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. Computers can receive signals from satellites if they are set up to do so. It won't be the case for all computers though. (MORE)
If you live close enough to the transmitters and you are in the line of sight (LOS) or just beyond. A POWERED rabbit ear type might be right. There are so many variables in this question that much more information is needed to give a more defined answer.
Cordless phones use radio frequencies to send the messages from a base, which is attached to the phone line, through the air to the cordless handset. Newer cordless phones receive their signals digitally.
Depending on the make and model of the USB WiFi antenna, it can boost a WiFi signal range up to 1000 feet and some claim to boost the signal by four times whatever the current output is.
It depends on what you mean by "mixed signals," and it also depends on the age of the person. Some teens, for example, are very uncertain whether they want a relationship or not; they may feel like they do one day, and feel entirely the opposite on another day. And even with adults, some are afraid …to commit, while others think they are better off to wait a while before getting serious. The best thing to do when you are feeling the other person is moody or changeable about the relationship is try to talk honestly with him or her. If the person seems hesitant to talk about it, they may just need time (nobody likes to feel pressured). Or, they may be trying to tell you politely that they don't feel the same way you do. For a relationship to be successful, both people need to feel they can talk honestly with each other, so only time will tell whether the other person is trying to avoid making a commitment, or whether there just needs to be a little more time to straighten your differences out. (MORE)
Radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency significantly below that of visible light, in the radio frequency range, from about 3 kHz to 300 GHz.These waves are called radio wave . Electromagnetic radiation travels by means of oscill…ating electromagnetic fields that pass through the air and the vacuum of space. for example if we speak the wave signal->transducer->electronic signal->electronic processors->transmitter->electronic magnetic wave->receiver->electronic signal->transducer->wave signal->to ear (MORE)
Radio signals are electromagnetic radiation . Make electriccurrent flow rapidly back and forth in an antenna wire causeselectromagnetic radiation to be transmitted from that antenna. Asthe electromagnetic radiation passes over another antenna wire itcauses an electric current to flow in that antenn…a that isidentical to the original current in the transmitting antenna (butweaker) causing the signal to be received. To transmit and receive information (e.g. Morse Code, voices,music) the transmitting antenna's back and forth electric currentmust be modulated in some way by that information and thereceiving antenna's back and forth current must be demodulatedto recover the information . There are many different types ofmodulation systems that can be used (e.g. continuous wave,amplitude modulation, frequency modulation, phase modulation,single sideband, suppressed carrier, pulse width modulation, pulsetime modulation, pulse code modulation). Many different stations can transmit at the same time and you canselect which of these to receive because the transmittersoperate on different frequencies of how fast the electriccurrent flow switches direction of flow and your receiver usesan electronic filter that passes only the modulated frequenciesof the station you select and block others. (MORE)