0
What else can I help you with?
What is the operational frequency of half wave dipole antenna?
Its resonant frequency is where its length is half a wavelength, so for 100 MHz the wavelength is 3 metres and a 1.5-metre long dipole is resonant. A dipole antenna can be used for many applications within a band of 10-20% around the resonant frequency.
What length of dipole in relation to its wavelength in meters or khz?
There are several kinds of dipole; the most common is the half-wave dipole. Its total length is fairly close to half the wavelength of the design frequency. The length needs to be adjusted slightly to compensate for the thickness of the elements and for end-effects. If the length is wrong by ten or twenty percent it will alter the feed impedance, but have little effect on the gain.
What is effect of change in the length of a dipole antenna?
The length of a dipole antenna directly affects its resonant frequency; a longer antenna typically resonates at a lower frequency, while a shorter antenna resonates at a higher frequency. This is because the length of the antenna is generally optimized to be around half the wavelength of the frequency it is intended to transmit or receive. Additionally, changes in length can impact the antenna's impedance, bandwidth, and radiation pattern. Therefore, adjusting the length alters its efficiency and performance for specific frequency ranges.
Why dipole antenna not used for high frequency?
Depends on what you mean by high frequency. The rabbit ears antenna used in broadcast TV is a dipole and is used for VHF.
What is the value of radiation resistance of half wavelength dipole antenna?
36 ohm
What is the formula for a 40 meter dipole?
The formula to calculate the length of a dipole antenna is 468/frequency in MHz. For a 40 meter dipole, which operates at around 7 MHz, the formula would be 468/7 = 66.85 feet long, or about 67 feet. This would be split into two equal lengths, one for each side of the dipole.
What is a active gas?
Absorption of energy from IR radiation can only occur when the wavelength of radiation and the wavelength of the bond vibration match. If a molecule has symmetry...for example no dipole, we say it is IR inactive. CO2 has no dipole....this would be an IR inactive gas...Cl2 as well. A gas that has a dipole would be IR active. Propene would be a nice example of an IR active gas.It possesses a dipole. One would see a signal around 1650.A:CO2 has no permanent dipole. However, when CO2 undergoes a bending vibration, its dipole moment changes from zero to some non-zero value. This vibration produces a change in dipole moment and is therefore IR active.
What is a infrared active gas?
Absorption of energy from IR radiation can only occur when the wavelength of radiation and the wavelength of the bond vibration match. If a molecule has symmetry...for example no dipole, we say it is IR inactive. CO2 has no dipole....this would be an IR inactive gas...Cl2 as well. A gas that has a dipole would be IR active. Propene would be a nice example of an IR active gas.It possesses a dipole. One would see a signal around 1650.A:CO2 has no permanent dipole. However, when CO2 undergoes a bending vibration, its dipole moment changes from zero to some non-zero value. This vibration produces a change in dipole moment and is therefore IR active.
What is the formula for a quarter wave dipole antenna?
The length of a quarter wave for constructing one end of a dipole is: 234/MHz = feet of wire. For instance if you have an 80 meter ham radio transceiver and want to construct a dipole to match a frequency of 3.56 MHz (the low power calling frequency) then 234/3.56 = 65.7 feet Next buy a spool of speaker wire, mark off 65 and 3/4 feet, and pull apart the two wires until you reach the mark. Now you have a half wavelength dipole that resonates near 3.56 MHz. Start broadcasting in Morse code and I will meet you on the air! Sandy, KB3EOF
Types of molecular attraction?
Ion-dipole, Dipole-dipole, and Dipole-induced dipole.
Why does dispersion happen?
Dispersion forces are forces that are due to certain distortions in the electron density around atoms or moleculed. They can be mainly categorized in to : 1.Induced dipole-induced dipole forces 2.Dipole dipole force 3.Induced dipole-dipole forces 4.London force Dipole forces are forces between molecules that have permanent dipole character like NaCl.However, in cases like certain molecules that do not have dipole character, there may be instantaneous distotions which leads to london forces.Dipoles can induce dipole character by thickening densities of electrons around certain atoms, leading to induced dipole interactions.
What kind of forces is a dipole-dipole force?
Dipole-dipole interactions are of electrostatic nature.
