We have been able to conclude that using an isotropic antenna, an RFID reader might achieve a read range of a few meters with 1 watt of output power. This configuration might be fine ifRFID tags of ...

An antenna's directive gain, as implied in the math above, is defined by its region of maximum directivity of the main beam. If the half-wave dipole is perpendicular to the ground, it is ...

Description An introduction to properties of individual antennas and arrays of antennas. Retarded potentials, dipoles of arbitrary length, radiation pattern, gain, directivity, radiation resistance.

Antenna gain and directivity are in comparison to an isotropic antenna - which is an ideal antenna that radiates evenly in all directions. Directivity is a comparison of the maximum power measured, ...

Technavio analysts forecast the global automotive antenna module market to grow at a CAGR of over 9% during the forecast period, 2018-2022.

At frequencies below 500 MHz, the antennas are not as directive as those used at microwave frequencies. To get a high directivity at those frequencies, horns would have to be very large.

By coupling an Adcock antenna and an oscilloscope, Watt was able to rapidly lock onto a lightning bolt or a radio transmitter. The military high-frequency direction finder or huff-duff proved ...