Indoor 800-2500mhz 3dB omnidirectional ceiling antenna for mobile phone signal amplifier – 509

3、 Schematic diagram of antenna radiation direction

4、 Antenna gain diagram

5、 Schematic diagram of antenna darkroom test

6、 Other relevant knowledge

An antenna is an electronic device used to transmit or receive radio waves – or more generally, electromagnetic waves. Antennas are used in radio and television, point-to-point radio communications, radar and space exploration systems. Usually in outer space and in the air.

Physically speaking, an antenna is a combination of one or more conductors, which can produce electromagnetic field radiated by the applied alternating voltage or alternating current, or it can be placed in the electromagnetic field to generate alternating current inside the antenna and generate alternating voltage at its terminal due to the induction of the field.

The main parameters of the antenna are as follows:

1. Resonant frequency

2. Gain

3. Bandwidth

4. Input impedance

5. Standing wave ratio

6. Radiation pattern

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