Microwave millmeter wave broad band three decibel orthogonal digital phase shifter

Abstract

This invention relates to a microwave and millimeter wave broad band 3db orthogonal digital phase shifter including a 3db orthogonal directional coupler, in which, an isolation end corresponding to the input of the coupler is connected with a broad band standard 50 ohm matched load, the through end corresponding to the input of the coupler is connected with a port of a branch of a broad band matched single-pole double throw switch, K1 and K2 are two control ends of the switch, the control signal controls the input / output of the microwave and millimeter wave signals from a port of the switch or the other to let it input / output from the public end of the switch.

Description

a technical field [0001] The invention relates to an electronic component used for communication and guidance, in particular to a microwave and millimeter wave broadband three-decibel quadrature digital phase shifter. Two background technology [0002] Microwave and millimeter wave broadband three-decibel quadrature phase shifter is an electronic component mainly used in electronic system equipment such as digital microwave communication, mobile communication, radar, electronic countermeasures and guidance instruments. In the control circuit of broadband microwave and millimeter wave frequency band, digital phase shifter is one of the main control circuits of microwave and millimeter wave. The main technical indicators describing the performance of this product are: 1) Operating frequency bandwidth; 2) Phase shift number; 3 ) phase shift 4) phase shift accuracy; 5) insertion loss; 6) insertion loss difference of each state; 7) voltage standing wave ratio of input and output ...

AI Technical Summary

Problems solved by technology

Similar products of 90-degree (orthogonal) phase shift digital phase shifter, due to the defects of the circuit topology and process implementation method used in the design, coupled with the large frequency bandwidth and large phase shift, whether it is coaxial, waveguide, hybrid integration, Low-temperature co-fired ceramic three-dimensional integrated circuits and other methods are still implemented by gallium arsenide monolithic integrated circuits, usually with poor electrical performance indicators

The main disadvantages are: 1) The circuit topology is complex; 2) The design is difficult; 3) The process is difficult; 4) The phase shift accuracy is low; 5) The input and output voltage standing wave ratio is poor; 6) The operating frequency bandwidth is narrow; 7) The yield rate is low; 8) Affected by process control parameters, the electrical performance consistency between circuits is poor; 9) The circuit size is large

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