Input and output coupling structure of ultra-wide passband combiner

Abstract

The invention discloses an input and output coupling structure of an ultra-wide passband combiner, and belongs to the field of combiners. The input and output coupling structure of the ultra-wide passband combiner comprises a main body, a cavity is arranged in the main body, a comb line resonator is arranged in the cavity, and the comb line resonator is fixedly connected in the cavity through a resonator fixing screw; an L-end low pass is further connected into the cavity, a COM input end coupling block corresponding to the COM end input connector is connected into the cavity, and the COM input end coupling block is connected with the L-end low pass in a welded mode; an H port input copper rod and an L port input copper rod are connected into the H port output connector and the L port output connector respectively, the L port input copper rod is connected with the L end in a low-pass welding mode, and an H port coupling resonance column is further arranged in the cavity. According to the structure disclosed in the invention, the defect that strong coupling is difficult to realize in the design of a broadband combiner is solved, and the characteristics of stability, consistency, reliability, operability, low cost and the like are improved.

Description

technical field [0001] The invention relates to the technical field of combiners, in particular to an input-output coupling structure of an ultra-wide passband combiner. Background technique [0002] In the wireless mobile phone communication system, the main function of the combiner is to combine the input multi-band signals together and output them to the same indoor distribution system. In engineering applications, it is necessary to combine the 800MHZ C network, 900MHz G network or It is the output of other different frequencies at the same time. Using a combiner, a set of indoor distribution systems can work in the CDMA frequency band, GSM frequency band or other frequency bands at the same time. The combiner is generally used at the transmitter, and its function is to combine two or more The radio frequency signals sent from different transmitters are combined into one radio frequency device sent to the antenna, and at the same time avoid the mutual influence between t...

AI Technical Summary

Problems solved by technology

[0002] In the wireless mobile phone communication system, the main function of the combiner is to combine the input multi-band signals together and output them to the same indoor distribution system. In engineering applications, it is necessary to combine the 800MHZ C network, 900MHz G network or It is the output of other different frequencies at the same time. Using a combiner, a set of indoor distribution systems can work in the CDMA frequency band, GSM frequency band or other frequency bands at the same time. The combiner is generally used at the transmitter, and its function is to combine two or more The radio frequency signals sent from different transmitters are combined into one radio frequency device sent to the antenna, and at the same time avoid the mutual influence between the signals of each port. The coupling is relatively strong. If the conventional design inductive coupling is used, it is difficult to achieve a strong coupling value, and the existing inductive coupling is not easy to control, tuning is troublesome, and the processing cost and batch cost are relatively high.

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