The term
Antenna system An antenna system is a transmission system composed of one or more transmitting antenna units and corresponding feeding components (including a feeder cable, power distributor, phase shifter, regulator, test section, connector, etc.). The feeder system is a feeding system composed of main feeder cables, switch boards, connectors, etc. 2.0.3 Antenna& The total system composed of antenna system and feeder system is called antenna feeder system. Voltage Standing Wave Ratio (VSWR): When a feeder terminal is connected to a load, voltage standing waves are generated on the locked wire due to incomplete matching between the load impedance and the characteristic impedance of the feeder. The ratio of the maximum to minimum standing wave voltage is called the voltage standing wave ratio (VSWR), represented by the symbol VSWR Input impedance: The ratio of voltage and current at the input end of the antenna feeder system The maximum power that the antenna feeder system can operate normally and stably for a long time within the operating frequency range of power rating Antenna polarization The trajectory and orientation of the electric field vector endpoint of an antenna emitting electromagnetic waves over time The ratio of the power required at the input of a lossless half wave dipole antenna (P%) to the power required at the input of a given antenna (Pa) to generate the same field strength at the same distance in a given direction, usually expressed in dBd. Unless otherwise specified, gain refers to the gain in the maximum radiation direction. The radiation pattern of an antenna refers to the pattern in which the radiation electromagnetic field intensity of the antenna is distributed over a fixed distance with spatial angular coordinates (0,), which is called the antenna radiation pattern. The field intensity pattern is expressed by the radiation field intensity value
Function of testing report:
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