Balanced/unbalanced power divider/combiner with unbalanced end non-reflection filtering characteristic

Abstract

The invention discloses a balanced / unbalanced power divider / combiner with an unbalanced end non-reflection filtering characteristic. The balanced / unbalanced power divider / combiner comprises balanced differential signal input ports A, two high-selectivity filtering structures, two sections of branch lines, a phase inverter, an isolation resistor, two absorption reflection wave branches and two unbalanced end signal output ports, the balanced differential signal input ports A comprise an unbalanced end signal input port A+ and an unbalanced end signal input port A-; the two high-selectivity filtering structures respectively comprise a first filtering structure and a second filtering structure; the power divider can transmit differential signals input by the balance end to the unbalance end in a filtering mode and can serve as a combiner from the unbalance end to the balance end, and meanwhile stop band signal reflection is reduced.

Description

technical field [0001] The invention relates to a microwave power divider / combiner, in particular to a balanced / unbalanced power divider / combiner with unbalanced end reflection-free filtering characteristics. Background technique [0002] The power divider is referred to as a power splitter for short. It has the function of separating and combining signals. It is widely used in antenna feed networks, power amplifiers and balanced mixers. Compared with the Wilkinson power divider, the Gysel type power divider introduces a grounding resistor, which overcomes the problem of poor heat dissipation under high power conditions of the Wilkinson power divider because the resistance between the output ports is not grounded; in addition, it has an inverting The characteristic power divider / combiner can reduce the noise figure of the mixer and improve the performance of the balanced circuit, so it has received more and more attention. [0003] With the continuous development of modern ...

AI Technical Summary

Problems solved by technology

Normally, the signal entering the unbalanced terminal is filtered and then transmitted to the balanced terminal, but the signal in the stop band is reflected back to its own source terminal, which will generate unnecessary source signal interference and affect the stability of the system

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