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Temperature compensation digital passive phase shifter

A technology of temperature compensation and phase shifter, applied in the direction of digital technology network, impedance network, electrical components, etc., can solve the problems affecting the performance of phased array system, and achieve the effect of low power consumption and high integration

Pending Publication Date: 2022-03-25
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because it uses passive devices and the transistor works in switch mode, the performance of the phase shifter is greatly affected by temperature, which affects the performance of the entire phased array system

Method used

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  • Temperature compensation digital passive phase shifter
  • Temperature compensation digital passive phase shifter
  • Temperature compensation digital passive phase shifter

Examples

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Embodiment Construction

[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0027] figure 1 is the schematic diagram of a traditional phase shifter; figure 2 It is a structural schematic diagram of a temperature-compensated digital passive phase shifter of the present invention; image 3 It is a schematic diagram of the temperature control unit of the present invention; Figure 4 It is a schematic diagram of the controlled switch unit of the present invention; Figure 5 It is a schematic diagram of the phase shifting unit of the present invention; Image 6 It is a comparison chart of the phase, amplitude and matching performance of the traditional phase shifter and the temperature compensated phase shifter as a function of temperature; Figure 7 Compared with the traditional phase shifter, the temperature compensation phase shifter is the reduction rate of four aspects of amplitude characteristics, phase charact...

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Abstract

The invention relates to a temperature compensation digital passive phase shifter, which comprises a phase shifting unit, two controlled switch units and a temperature control unit, and is characterized in that the input end of the first controlled switch unit is connected with a radio frequency input port, and the output end of the first controlled switch unit is connected with the input port of the phase shifting unit; an output port of the phase shift unit is connected with an input end of the second controlled switch unit, an output end of the second controlled switch unit is connected with a radio frequency output port, a digital control signal Ctrl is connected to the temperature control unit, and an output port of the temperature control unit is connected with controlled ports of the two controlled switch units. And the temperature control unit outputs a temperature control signal to the controlled switch unit to carry out temperature compensation on the characteristics of the controlled switch unit. According to the passive phase shifter, system insertion loss is not increased, input and output matching is not affected, and a control interface is not additionally arranged.

Description

technical field [0001] The invention relates to the field of passive phase shifters, in particular to a temperature-compensated digital passive phase shifter. Background technique [0002] As a key component in the phased array system, the phase shifter plays a decisive role in the performance of the phased array system. Since a phased array system is equipped with a large number of phase shifters in both the transmit and receive chains, low cost, low power consumption, small size, and light weight phase shifters are essential. Traditional phase shifters mostly use compound technology, which has high electron mobility and Q value of passive devices, and has low insertion loss, but the cost is high. The use of silicon technology can greatly reduce the cost, and digital and analog circuits can be integrated on the same die, thereby increasing the integration and reliability of the phased array system. According to the control method, phase shifters can be divided into analog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/54H03H7/48H03H17/08
CPCH03H7/54H03H7/48H03H17/08
Inventor 赵远万川川张浩
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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