Antenna system access device and antenna system
An antenna feeder system and access device technology, applied in the field of communication, can solve problems such as difficult phase control, large insertion loss, poor passive intermodulation, etc., reduce amplitude imbalance and phase imbalance, and simplify implementation solutions , Improve the effect of performance indicators
Active Publication Date: 2017-03-01
COMBA TELECOM TECH (GUANGZHOU) CO LTD
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Problems solved by technology
[0010] but, figure 2 The function realization of the access device of the antenna feeder system shown requires 4 duplexers, 1 ordinary bridge, 1 90° phase shifter, and 6 cables. The connection is complicated, the debugging is difficult, and the phase is difficult to control (for example: in In the GSM900 frequency band, the length difference between cable 1 and cable 2 is 0.9mm, and the phase difference is 1°. The higher the frequency, the higher the requirement for the length difference between the two cables), and there are also large insertion loss and passive intermodulation difference , system VSWR, large volume, high cost and other disadvantages
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] see image 3 , An embodiment of the antenna feeder system access device of the present invention includes: a first filtering device, a second filtering device and an inverting bridge.
[0030] Wherein, the first filtering device includes a first transmitting filter (Transmit, TX1), a second transmitting filter (Transmit, TX2) and a first receiving filter (Receive, RX1); the second filtering device includes a third transmitting filter (Transmit, TX3), the fourth transmit filter (Transmit, TX4) and the second receive filter (Receive, RX2); the inverting bridge is connected to the first transmit filter, the second transmit filter, and the third transmit filter respectively filter and a fourth transmit filter.
[0031]In this embodiment, the antenna feeder system access device further includes: a first antenna port (ANT1), a second antenna port (...
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The invention discloses an antenna feed system access device, comprising a first filtering device, a second filtering and an inverter bridge. The filtering device comprises a first emission filter, a second emission filter and a first receiving filter; the second filtering device comprises a third emission filter, a fourth emission filter and a second receiving filter; and the inverter bridge is connected to the first emission filter, the second emission filter, the third emission filter and the fourth emission filter respectively. The invention also discloses an antenna feed system, comprising an antenna, an antenna feed system access device and a base transceiver station. Through the abovementioned structure, an implementation scheme of the antenna system access device can be simplified, the size is reduced, at the same time, the degree of unbalance of amplitudes and phase positions of power dividing signals is lowered, and various other performance indexes are improved.
Description
technical field [0001] The present invention relates to the communication field, in particular to an antenna feeder system access device and an antenna feeder system. Background technique [0002] In some application scenarios of the ±45° cross-polarized antenna feed system, in addition to ensuring diversity reception, it is also necessary to superimpose the transmitted signal into a vertically polarized signal or a horizontally polarized signal in space. The system application block diagram for realizing this function like figure 1 As shown, it includes: Base Transceiver Station (BTS), antenna feeder system access device, ±45° cross-polarized antenna and cable. Among them, the antenna feeder system access device includes antenna ports ANT1, ANT2, transmit 1 / receive 1 port (Transmit1 / Receive1, TX1 / RX1) and transmit 2 / receive 2 port (Transmit2 / Receive2, TX2 / RX2) port. Antenna ports ANT1 and ANT2 are used to connect to ±45° cross-polarized antennas, and TX1 / RX1 ports and TX2...
Claims
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IPC IPC(8): H04B7/10
Inventor 郭春波孙雷邸英杰
Owner COMBA TELECOM TECH (GUANGZHOU) CO LTD