Co-polarization microstrip duplex antenna array

Abstract

The invention discloses a co-polarization microstrip duplex antenna array. The co-polarization microstrip duplex antenna array comprises two symmetrically-arranged microstrip patch antennas and an anti-phase power distribution network having a duplex function. The anti-phase power distribution network comprises a power distribution microstrip line, a transmitting microstrip band stop filter, a transmitting impedance conversion microstrip line, a receiving microstrip band stop filter, and a receiving impedance conversion microstrip line. One end of the transmitting microstrip band stop filter is connected with a transmitting port, and the other end is connected with the power distribution microstrip line by the transmitting impedance conversion microstrip line. One end of the receiving microstrip band stop filter is connected with a receiving port, and the other end is connected with the power distribution microstrip line by the receiving impedance conversion microstrip line. The duplex power distribution network has the duplex function and the power distribution function is designed, and the structure of every antenna is compact, and a gain is high, and at the same time, by adopting the transmitting microstrip band stop filter and the receiving microstrip band stop filter, the high isolation between the transmitting port and the receiving port is realized.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a co-polarized microstrip duplex antenna array. Background technique [0002] The antenna feeder system is the front end of the wireless communication system and an indispensable key component of the wireless communication system. The antenna feed system includes antenna, filter and duplexer. The traditional method is to design the three separately and connect them with radio frequency cables. The disadvantage is that all three need a separate matching network to match the 50 ohm feeder, which brings about the problems of large volume and total weight. At the same time, too many matching networks bring about the disadvantage of large loss. [0003] With the development of wireless communication, the communication system tends to be miniaturized and integrated more and more. Therefore, there is a great demand for an integrated antenna-feeder system. Duplex antenna...

AI Technical Summary

Problems solved by technology

The disadvantage is that all three need a separate matching network to match the 50 ohm feeder, which brings about the problem of large volume and total weight. At the same time, too many matching networks bring about the disadvantage of large loss

Therefore, the current co-polarized duplex antenna generally has the disadvantages of low port isolation, a large interval between the antenna's transceiver frequency, and the low gain of the antenna.

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