期刊
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
卷 69, 期 1, 页码 29-42出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMTT.2020.3028073
关键词
Phase shifters; Power dividers; Switches; Butler matrices; Couplers; Transmission line matrix methods; Routing; Beamforming networks; 5G; power dividers; reconfigurable circuits
资金
- EU [876019]
This article introduces a new circuit topology for a highly reconfigurable 1 x 4 radio frequency network, which can modify magnitude and phase relations among output signals while preserving matching at all ports. Experimental validation demonstrates the circuit's flexibility and potential.
This article presents a new circuit topology for a highly reconfigurable 1 x 4 radio frequency network that, for a given input, is able to modify magnitude and phase relations among its output signals with great flexibility while preserving matching at all ports. The circuit, based on a four-way power divider, four hybrid couplers, and eight variable phase shifters, is first theoretically analyzed. It is shown that magnitude and phase relations among signals at the output ports can be modified just by changing the state of the variable phase shifters, while the sum of the squared magnitude of the transmission coefficients of the network is always equal to one. For the specific purpose of the experimental validation of the developed theory, a particular version of the network, working at 3.6 GHz, is then designed and tested. All configurations are affected by the same insertion loss, depending on the adopted phase-shifting technology. The obtained results show the potential of the conceived circuit and testify its unprecedented degree of reconfigurability.
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