Microwave and millimeter wave wideband 5bit singlechip integrated digital phase shifter

Abstract

The invention discloses a microwave and millimeter wave wideband 5bit singlechip integrated digital phase shifter. The phase shifter is formed by the cascade of 11.25-degree, 22.5-degree, 45-degree, 90-degree and 180-degree phase shift circuits; high / low-pass filter topology is adopted in a 11.25-degree / 22.5-degree phase shift position; reflective topology design is adopted in 45-degree / 90-degree / 180-degree phase shift position; and the phase shifter totally can realize 32 phase shift states in a phase shift stepping value range of 0 to 360 degrees, the finally layout is arranged by the phase shifts from big to small, and the working frequency band of the phase shifter is 6 to 18GHz. The phase shifter has simple circuit topology and design process, simple manufacturing process, high yield, small chip area, wide working frequency band, low insertion loss, high phase shift precision, low input and outlet voltage standing wave ratio and small insertion loss difference of the phase shift states.

Description

technical field [0001] The invention relates to many technical fields such as phased array radar, mobile communication, digital microwave communication, instrumentation, heavy ion accelerator, electronic countermeasures, missile attitude control system, intelligent antenna system, etc., especially a wide-band single-chip integrated digital phase-shifting device. Background technique [0002] Microwave digital phase shifter, as the core component of the transceiver components in the modern phased array radar system, has great practical significance both from the practical point of view and from the theoretical research point of view. 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 accurac...

AI Technical Summary

Problems solved by technology

The existing microwave five-bit 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, or due to the three-dimensional integration of coaxial, waveguide, hybrid integration, and low-temperature co-fired ceramics Circuits and other methods, usually the electrical performance indicators are poor

Therefore, its main disadvantages are: (1) The circuit topology is complex, and each bit needs to be implemented with a different circuit; (2) The design is difficult; (3) The process is difficult; (4) The phase shift accuracy is low; (5) Multiple bits The circuit loss of the digital phase shifter is large; (6) the VSWR ratio of the input and output terminals is poor; (7) the operating frequency bandwidth is narrow; (8) the cost is high; (9) the circuit size is large

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