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what is antenna effective area

The effective area or effective aperture of a receiving antenna expresses the portion of the power of a passing electromagnetic wave which it delivers to its terminals, expressed in terms of an equivalent area. For instance, if a radio wave passing a given location has a flux of 1 pW / m2 (10−12 wa

Posted on:12-12 View:1511
What is polarization (waves) of Antennas

The polarization of an antenna refers to the orientation of the electric field (E-plane) of the radio wave with respect to the Earth's surface and is determined by the physical structure of the antenna and by its orientation; note that this designation is totally distinct from the antenna&apos

Posted on:12-11 View:1294
Local Radio Stations Helping Promote Turkey Drive

It was time to talk turkey this morning at American General Media radio in San Luis Obispo. Once again, the media company, which operates four stations in the county, is helping promote the KCOY Turkey Drive. "It's a real important part of KZOZ and the American General Media Foundat

Posted on:12-11 View:380
what are arrays and reflectors of antenna

The amount of signal received from a distant transmission source is essentially geometric in nature due to the inverse square law, and this leads to the concept of effective area. This measures the performance of an antenna by comparing the amount of power it generates to the amount of power in the

Posted on:12-10 View:355
CLTV 36 widens reach with new Clark Tower

CLARK FREEPORT -- The Laus Group-run CLTV 36 has widened its reach and its programs can now be seen to as far as La Union in the north and Metro Manila, Rizal and parts of Cavite in the south, after switching on Wednesday its new 10,000 watts transmitter and 68.50 meters high Clark Tower in this Fr

Posted on:12-10 View:503
FM transmitter, which gives us better sound and upsets less people aro...

OTTUMWA — It's next to impossible to drive past Bridge City TV and Appliance anytime after dark this December without noticing the dazzling, dancing light display. Since moving the store to Main Street over three years ago, owner Chris McKeag has been adding on to their homemade display every

Posted on:12-09 View:472
what is the radiation pattern of antenna

Polar plots of the horizontal cross sections of a (virtual) Yagi-Uda-antenna. Outline connects points with 3db field power compared to an ISO emitter. The radiation pattern of an antenna is a plot of the relative field strength of the radio waves emitted by the ante

Posted on:12-09 View:772
What is the impedance matching of antenna

Maximum power transfer requires matching the impedance of an antenna system (as seen looking into the transmission line) to the complex conjugate of the impedance of the receiver or transmitter. In the case of a transmitter, however, the desired matching impedance might not correspond to the dynami

Posted on:12-08 View:985
Syrian radio station brings hope amid the war

At seven every morning, a cheerful voice crackles over the airwaves of northern Syria. As people stumble out of bed, or rub the sleep from their eyes on their way to work, they tune in as Avin Shekhmous launches into her two-hour programme about health issues. The content of

Posted on:12-08 View:334
What is antenna gain

Gain is a parameter which measures the degree of directivity of the antenna's radiation pattern. A high-gain antenna will radiate most of its power in a particular direction, while a low-gain antenna will radiate over a wider angle. The antenna gain, or power gain of an antenna is defined

Posted on:12-07 View:382

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