Dual-frequency combining device

Abstract

The invention discloses a dual-frequency combining device. The combining device comprises a cavity, a cover plate and a plurality of resonant rods, wherein the outer side wall of the cavity is provided with a first signal input port, a second signal input port and an output port respectively; the cavity contains a first channel and a second channel which are arranged side by side and has straight groove profile, one end of the first channel is communicated with one end of the second channel; the output port is arranged corresponding to the communicating part of the first channel and the second channel; the first signal input port and the second signal input port are respectively arranged on the other end of the first channel and the other end of the second channel; and the resonant rods comprises a thin ring, two second resonant rods, six third resonant rods and three fourth resonant rods. The dual-frequency combining device can meet the market requirement of the communication and has the advantages of simple structure, small error, high production efficiency and low cost.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a dual-frequency combining device. Background technique [0002] In a communication system, a combiner is mainly used to combine multi-system signals into an indoor distribution system. For example, in engineering applications, it is necessary to combine and output the two frequencies of 800MHZ C network and 900MHz G network. Using the above combiner, a set of indoor distribution system can work in CDMA frequency band and GSM frequency band at the same time. Another example is in the radio antenna system, after the input and output signals of several different frequency bands (such as 145MHZ and 435MHZ) are combined by a combiner, they are connected to the radio station with a feeder line, which can not only save a feeder line, but also avoid The hassle of switching between different antennas. [0003] refer to figure 1 The schematic diagram shown is a combiner in the p...

AI Technical Summary

Problems solved by technology

[0004] As 3G communication technology is more and more widely used in people's lives, there are more and more 3G applications in the field of communication technology. However, the prior art does not disclose sufficient types and performance that can be used for 3G communication. device

Some multi-frequency combiners can combine a variety of different signals, but the cost is high, the price is expensive, and the manufacturing efficiency is low

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