Hybrid Ring Trisection Power Divider for Output Isolation
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Solution Overview
Problem
The performance of trisection microstrip power dividers/combiners is poor and fails to meet the requirements of microwave transmission systems due to inadequate isolation and phase imbalance among output ports, leading to unstable device operation.
Innovation Solution
A trisection power divider with isolation is designed using a combination of hybrid ring couplers with specific distribution ratios and configurations, including circular and closed hybrid ring couplers, to ensure isolation and phase consistency among output ports, replacing the conventional Wilkinson power divider.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional Wilkinson power divider is used for trisection power division, then the structure is simple, but the isolation between output ports is insufficient and phase imbalance occurs
Solution Approach 1:
The power divider is divided into two independent hybrid ring coupler modules connected in series. The first hybrid ring coupler divides the input signal into two paths with a 1:2 power distribution ratio, and the second hybrid ring coupler further divides one of these paths with a 1:1 ratio, achieving trisection power division while maintaining isolation between output ports through the inherent isolation characteristics of each coupler module
Solution Approach 2:
The hybrid ring coupler structure acts as an intermediary component that provides both power division and isolation functions. The specific 1:2 and 1:1 distribution ratios are designed to achieve equal power distribution at the three output ports while the isolation ports of the couplers provide natural isolation between outputs, eliminating the need for additional isolation components
2Reliability
If conventional power divider is used, then the device operation is simple, but phase imbalance among output ports leads to unstable operation
Solution Approach 1:
The invention changes the power distribution parameters of the hybrid ring couplers to specific 1:2 and 1:1 ratios, which ensures that the three output ports achieve equal power distribution and consistent phase relationships. This parameter optimization eliminates phase imbalance and ensures stable operation of the microwave transmission system
Data Source
AI summary
The present application provides a trisection power divider with isolation and a microwave transmission system, where the divider includes a first hybrid ring coupler with a distribution ratio of 1:2 and a second hybrid ring coupler with a distribution ratio of 1:1; a first port of the first hybrid ring coupler is a signal input port; a second port of the first hybrid ring coupler is connected with a first port of the second hybrid ring coupler; a second port of the second hybrid ring coupler, a third port of the second hybrid ring coupler and a third port of the first hybrid ring coupler are three signal output ports of the divider; and the second port of the first hybrid ring coupler is a port with high power.