What is an antenna analyzer?
Antenna analyzer is the type of radio frequency analyzer (RF), which measures the performance of the antenna feeder and the RF antenna itself. It is able to measure the quality of impedance comparing electrical circuits composed of a transmitter or receiver, RF feeder and antenna or antenna. The impedance match determines how much energy from the transmitter reaches the antenna and how much the RF signal received by the antenna actually reaches the receiver. Antenna analyzer facilitates the antenna so that it works best on the operating frequency.
In addition, the antenna analyzer can also use a bridge circuit to compare the resistance and reactive components of the antennas and impedance of the feeder at selected frequencies. The RX bridge uses the receiver as an indicator of balance in the bridge where one of the lower legs is connected to the antenna. Using unreactive 50-ohm resistors for the upper leg of the bridge, the second lower leg can be connected by known capacity or inductive impedance or both. Due to the frequency used for the test, capacitance values or induction can be inYet the impedance of the antenna and its feeder. In the RX Noise bridge, the noise source becomes the main source of RF.
RF analyzer measures the power of the transmitter and receiver. The joint power of the transmitter includes broadcasting power in Watts (W), which is the electricity that the transmitter broadcasts. Other transmitter parameters are the frequency error in Hertz (Hz) or cycles per second (CPS) and the amount of modulation. In frequency modulation (FM), the amount of modulation is measured as a frequency deviation of the carrier. For the receiver section, the RF analyzer measures the sensitivity and borehole level or the amount of RF signal, where the Squelch circuit is based.
The ratio of the standing wave (SWR) is ideally 1.0 for the perfect match between the transmitter and the antenna and dependent on the reflection coefficient (RC). When RC is low, the antenna impedance and transmitter impedance and feeders are approximately the same or together form an almost purely resistive pure impedance. SWR 3.0 level indicates RC about 0.5, CIt means that half of the energy is reflected back to the transmitter. As in physical experiments, when the wool is reflected and combined with incoming waves, a stable pattern can be observed, which is considered to be a wool stand, which means that the waves are not transmitted to the correct target and only create a power formula that diffuses as heat in the transmitter and RF. The SWR analyzer, which is another name for the antenna analyzer, is able to measure the SWR antenna to verify the maximum energy transfer from the transmitter to the antenna.