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Active passive hybrid microwave phase shifter

A microwave phase shifter and hybrid technology, applied in phase shifting networks, multi-terminal pair networks, etc., can solve the problems of complex phase shifting control signals and enlarged circuit layout, and achieve compact structure, small insertion loss, phase shifting and amplitude modulation small effect

Active Publication Date: 2019-04-26
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Application Information

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Problems solved by technology

[0007] The present invention aims at the deficiencies of the above-mentioned background technology, and provides an active-passive hybrid microwave phase shifter, which makes full use of the high linearity of passive phase shifting and the high gain of active phase shifting, and adds a simple The control signal can realize multi-bit high-precision phase shifting, which solves the technical problems that the circuit layout of the existing active and passive hybrid phase shifter increases with the increase of the phase shifting number and the phase shifting control signal is complicated.

Method used

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  • Active passive hybrid microwave phase shifter

Examples

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Embodiment 2

[0045] Embodiment 2 uses such as Figure 5 The vector synthesis adder shown in Fig. 10(a) adopts the decoding circuit shown in Fig. 10(a), the driving switch shown in Fig. 6(b) and the current mirror digital-to-analog conversion circuit shown in Fig. 10(b) to realize the digital control part. The code circuit converts the input 8-bit control signal into two sets of control signals, one set of control signals is used to control the phase of the passive phase shifting part to achieve small phase shifts of 5.625°, 2.8° and 1.4°, the other set of control vectors Quadrant selection and I / Q ratio of the signal adder to achieve a large phase shift in 11.25° steps. Taking passive phase shifting 3 bits and active phase shifting 5 bits to realize 8 phase shifts as an example, the 8-bit control signals D8 to D1 are obtained through the decoding circuit to obtain the vector adder quadrant selection control signals SI and SQ, and the current mirror digital-to-analog converter Control sign...

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Abstract

The invention discloses an active passive hybrid microwave phase shifter, relates to a phase shifting chip, and belongs to the technical field of basic electronic circuits. The active passive hybrid microwave phase shifter comprises a passive phase shifting part, an active phase shifting part and a digital control part; the active phase shifting part and the passive phase shifting part perform large displacement phase and small displacement phase under the control of the digital control part, which can avoid the defects of an existing passive structure and an active structure, and can flexiblyallocate phase shifts according to the demand; and in addition, the layout is flexible, the control signal is simple, the chip integration level is high, and the active passive hybrid microwave phaseshifter can be widely applied to a microwave millimeter wave phased array chip and has a good application prospect.

Description

technical field [0001] The invention discloses an active and passive hybrid microwave phase shifter, which relates to the field of radio frequency and microwave integrated circuit design of microelectronics and solid electronics, and specifically relates to a digital phase shifter circuit in the microwave frequency band, which belongs to the technical field of basic electronic circuits . Background technique [0002] Phased arrays are widely used in next-generation wireless communications and radars. In recent years, phased array chips based on silicon-based technology have become a research hotspot at home and abroad. The development of ultra-wideband active phased array technology has continuously increased the requirements for antenna beam steering. The key part of ultra-wideband active phased array technology is the high-precision microwave and millimeter wave phase shifter, which has attracted more and more attention and research. [0003] A phase shifter is a two-port...

Claims

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Application Information

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IPC IPC(8): H03H11/16
CPCH03H11/16
Inventor 浦鈺钤沈宏昌童伟李健康
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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