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What are the features of helical antenna?
the features are :-1.It has a wide bandwidth2.Easily constructed3.Has real i/p impedence.4.Can produce circularly polarized field.
What is dBic?
Acronym DefinitionDBIG DataBase Intelligence GroupDBig Database Interest GroupDBIG Developmental Biology Interest Group (NIH)DBIG Durban Bat Interest GroupYes it is an acronym, the dB- stands for decibel and the -ic stands for isotropic circular. The unit dBic is something commonly used in antenna design; referring to the gain of an antenna compared to a perfect circularly polarized isotopic source.
What is a polarized semiconductor component?
A: A diode a capacitor even a transistor must be connected to the the power as a polarized components
What is a reconfigurable antenna?
an antenna that is able to be formed, or bent
Can you replace an XM radio antenna with any other antenna like a 3ft hard cb antenna?
You can replace an XM radio antenna with a CB antenna, a ham 40-meter mobile antenna, a cellphone antenna, a GPS antenna, a TV antenna, a wire coat hanger, a 6 GHz microwave antenna, or a chain of paperclips. However, since none of them is optimized to operate at the frequencies of XM radio, like the XM antenna is, none of the others will work as well. Most of them will likely be so inefficient at the satellite radio frequencies that when you use one of those, you hear nothing at all on your radio.
What are the application of circularly polarized antenna?
RFID reader antennas
Are cross-element Yagi antennas always circularly polarized?
No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna. No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna.
Why vertical polarized wave is preferred over horizontal polarized wave in mobile radio communication?
1). Reflection of vertically polarized waves is less efficient, so vertical polarization is less susceptible to multipath fading due to ground-based reflection. 2). In order to avoid directional effects due to the radiation pattern of the receiving antenna (losing the mobile signal when the car turns a corner), the antenna wants to be vertical. That generally means vertical electrical polarization.
Light waves that vibrate in only one plane are called what?
Light waves that vibrate in only one plane are called polarized light. This means that the electric field of the light wave oscillates in a single direction. Polarized light can be achieved through polarization filters or by reflecting light off certain surfaces.
What is dual polarized antenna?
Its an antenna that can operate in vertical as well as horizontal polarization. Dual polarized antennas are often used in 802.11n devices to enable multi-thread communication. This enables the device to transmit data on one polarization and receive data on the other simultaniously. The advantage of this is that multi-thread communication can be achieved with the use of one antenna instead of using two independent (and opposite polarized) antennas for the same result. Obviously all the networking equipment in the wireless network must be multi-thread complaint for this to work.
What kind of waves can be plane polarized?
Transverse waves, such as electromagnetic waves like light and radio waves, can be plane polarized. This means that the electric field oscillates in a single plane as the wave propagates. Longitudinal waves, like sound waves, cannot be plane polarized because their oscillations are in the same direction as the wave's propagation.
Is a wave length horizontal or vertical?
If you can visualize whipping a length of rope tied to a fixed spot back and forth, you can then perfectly visualize radio frequency waves. If you whip the rope up and down the wave is vertically polarized. If you whip it back and forth horizontally, it is horizontally polarized. If you use a set of "rabbit ears" (dipole) to transmit a signal and hold it so the antenna points up and down, the radiated waves will be vertically polarized. To receive vertically polarized waves best, you need to use a vertically polarized antenna. The same holds true for horizontally polarized systems. This is a very simple but applicable explanation. There are other kinds of polarization such as "circular" as used in FM broadcasting and space communications. Just remember that the transmitting antenna's design determines the polarization of a radiated wave. See the ARRL Handbook 621.384 in your library for more detail.
Does an ungrounded antenna near the ground act like a single antenna with twice the height?
A better simple approximation would be two antennas separated by twice the distance of the single antenna to the ground.
Are light waves that oscillate only in a single plane polarized or unplaced?
Light waves that oscillate only in a single plane are considered polarized. Unpolarized light waves have oscillations occurring in various planes.
Can insulators be polarized?
Yes, insulators can be polarized. This means that the charges within the insulator can be rearranged in response to an external electric field.
What are the features of helical antenna?
the features are :-1.It has a wide bandwidth2.Easily constructed3.Has real i/p impedence.4.Can produce circularly polarized field.
When is an antenna a communications tower?
a communications tower has multiple antenna's (usually for multiple communications systems and net works) and is much higher than just a single antenna
