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Transmission type ultra-broad band digital phase shifter

A digital phase shifter and ultra-broadband technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of difficult integration and large occupied area, and achieve the effects of small phase shift fluctuation, low cost and small area

Inactive Publication Date: 2017-05-31
NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Switch-selective couplers and The π-type microstrip network realizes a 180° phase shift method, which can achieve a very wide bandwidth, but in the implementation of RF microwave integrated circuits, the traditional coupler and π-type microstrip network occupy a huge area and are difficult to integrate

Method used

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  • Transmission type ultra-broad band digital phase shifter
  • Transmission type ultra-broad band digital phase shifter
  • Transmission type ultra-broad band digital phase shifter

Examples

Experimental program
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Effect test

Embodiment 1

[0022] like figure 2 The transmission-type ultra-wideband digital phase shifter in Embodiment 1 includes a wire-wound inductive directional coupler, a T-type LC phase reference path, an input selection switch, an output selection switch, an input matching unit, and an output matching unit. The input matching unit is connected to the input selection switch, the input selection switch is connected to the wire wound inductance directional coupler and the T-type LC phase reference path, and then connected to the output selection switch, and the output selection switch is connected to the output matching unit.

[0023] The input matching unit includes an input terminal and an output terminal, the input terminal is the input terminal of the phase shifter, and the output terminal is connected to the input terminal of the input selection switch; the output matching unit includes an input terminal and an output terminal, and the output terminal is the output terminal of the phase shift...

Embodiment 2

[0029] like Figure 4 The transmission-type ultra-wideband digital phase shifter in the second embodiment shown includes a wire-wound inductive directional coupler, a wire-wound inductive directional coupler phase reference path, an input selection switch, an output selection switch, an input matching unit, an output matching unit, and ground unit. The input matching unit is connected to the input selection switch, the input selection switch is connected to the wire-wound inductance directional coupler and the phase reference path of the wire-wound inductance directional coupler, and then connected to the output selection switch, and the output selection switch is connected to the output matching unit.

[0030]In the phase reference path of the wound inductance directional coupler, the coupling end and the isolation end are grounded, the input end and the isolation end are connected through a microstrip line, and the coupling end and the through end are connected through a mic...

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Abstract

The invention discloses a transmission type ultra-broad band digital phase shifter. The transmission type ultra-broad band digital phase shifter comprises a winding inductance directional coupler, a phase reference path, an input selecting switch, an output selecting switch, an input matching unit and an output matching unit; the input matching unit is connected with the input selecting switch; the input selecting switch is connected with the winding inductance directional coupler and the phase reference path, and then is connected with the output selecting switch; the output selecting switch is connected with the output matching unit. The transmission type ultra-broad band digital phase shifter disclosed by the invention is compact in structure, small in area and low in cost, has a good stationary wave characteristic, little phase shift fluctuation, low insertion loss and parasitic amplitude modulation in an ultra-broad band frequency range, and can be widely applied to a broad band phased array system.

Description

technical field [0001] The invention belongs to the field of radio frequency microwave integrated circuits of microelectronics and solid electronics, and relates to a digital phase shifter chip, in particular to a transmission type ultra-wideband digital phase shifter. Background technique [0002] Phased arrays are widely used in the fields of high-speed wireless communication and radar. In recent years, phased array RF microwave chips based on silicon technology have become a research hotspot at home and abroad. With the development of ultra-wideband active phased array technology, the requirements for antenna beam steering continue to increase, and the research on microwave control circuits, especially ultra-wideband high-precision phase shifters, is of great significance and practical value. [0003] The phase shifter is a two-port network, which is mainly used to control the phase of radio frequency and microwave transmission signals. According to the working mode of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/18
CPCH01P1/18
Inventor 浦鈺钤沈宏昌李健康
Owner NO 55 INST CHINA ELECTRONIC SCI & TECHNOLOGYGROUP CO LTD
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