Net Deals Web Search

Search results

1. Results From The WOW.Com Content Network

2. Radio repeater - Wikipedia

   en.wikipedia.org/wiki/Radio_repeater

   In a shared system, a receive antenna is usually located at the top of the antenna tower. Putting the receive antenna at the top helps to capture weaker received signals than if the receive antenna were lower of the two. By splitting the received signal from the antenna, many receivers can work satisfactorily from a single antenna.

3. Horn antenna - Wikipedia

   en.wikipedia.org/wiki/Horn_antenna

   The first modern horn antenna in 1938 with inventor Wilmer L. Barrow. A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz. [1]

4. Aperture (antenna) - Wikipedia

   en.wikipedia.org/wiki/Aperture_(antenna)

   Assume a plane wave from a particular direction (,), which are the azimuth and elevation angles relative to the array normal, has a power flux density ‖ ‖; this is the amount of power passing through a unit area normal to the direction of the plane wave of one square meter. By definition, if an antenna delivers watts to the transmission ...

5. Inverted-F antenna - Wikipedia

   en.wikipedia.org/wiki/Inverted-F_antenna

   A planar inverted-F antenna (PIFA) is used for wireless circuitry implemented in microstrip.The microstrip format is the format of choice for modern RF electronics. It can be used to implement required distributed-element RF components such as filters, while at the same time being economical because the same mass production methods are used as for printed circuit boards.

6. Antenna gain-to-noise-temperature - Wikipedia

   en.wikipedia.org/wiki/Antenna_gain-to-noise...

   Antenna temperature (T ant) is a parameter that describes how much noise an antenna produces in a given environment. Antenna noise temperature is not the physical temperature of the antenna but rather an expression of the available noise power at the antenna flange. Moreover, an antenna does not have an intrinsic "antenna temperature ...

7. Q factor - Wikipedia

   en.wikipedia.org/wiki/Q_factor

   The Q factor is a parameter that describes the resonance behavior of an underdamped harmonic oscillator (resonator). Sinusoidally driven resonators having higher Q factors resonate with greater amplitudes (at the resonant frequency) but have a smaller range of frequencies around that frequency for which they resonate; the range of frequencies for which the oscillator resonates is called the ...