MULTI-POLARIZATION ANTENNA WITH ISOLATION SUPPLY DEVICE

摘要

A dual polarization antenna comprising an isolation supply device includes: a transmitter antenna element for outputting a transmission signal provided via a feeding line through a first port; a receiver antenna element for receiving a receiving signal and providing the receiving signal for a second port; a first coupler for distributing the transmission signal; an equalizer for equalizing a signal distributed from the first coupler with a pre-set waveform; a second coupler for receiving and combining an output of the equalizer to a signal outputted from the second port; and a conductor for forming a signal delivery path among the first coupler, the equalizer and the second coupler. Coupling performance of the first coupler and the second coupler, the length of the conductor and the functional characteristics of the equalizer are designed so that the signal combined to the second port through the signal delivery path using the conductor has an equal amplitude and a phase difference of 180 degree actually in comparison with a signal wrongly inputted to the receiver antenna from the transmitter antenna element and has the same shape over the whole operation frequency band. [Reference numerals] (AA) First port; (BB) Feeding line; (CC) Second port