Numerical control phase shift/digital attenuator temperature compensation circuit and method

A technology of temperature compensation circuit and digital attenuator, which is applied in the direction of electrical components, multi-terminal pair network, impedance network, etc., can solve problems such as large temperature changes, lower performance of phased array equipment, poor temperature characteristics of T/R components, etc., to achieve Small parasitic phase modulation temperature drift, narrow control range, and low insertion loss temperature drift

Active Publication Date: 2021-04-13
CHONGQING SOUTHWEST INTEGRATED CIRCUIT DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The insertion loss of traditional digital phase-shift digital attenuators, especially silicon-based millimeter-wave digital phase-shift / digital attenuators, and the parasitic phase modulation of digital attenuators vary greatly with temperature, resulting in poor temperature characteristics of T / R components and reducing the Performance of Phased Array Equipment

Method used

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  • Numerical control phase shift/digital attenuator temperature compensation circuit and method
  • Numerical control phase shift/digital attenuator temperature compensation circuit and method
  • Numerical control phase shift/digital attenuator temperature compensation circuit and method

Examples

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Embodiment Construction

[0027]SeeFigure 1 to 4, A number of control shift / digital attenuator temperature compensation circuit, including a drive array 3, a digital control unit 4, a temperature sensor 5, and a phase shifting circuit 1 and / or attenuation circuit 2;

[0028]The phase phase circuit 1 is configured in series by several numerically powered phase; the attenuation circuit 2 is configured in series by several digital attenuators; the number-controlled phase device is used to perform a certain amount of phase-proof processing of received signals. The digital attenuator is used to perform a quantity of attenuation processing on the received signal; the number of CNC camera and the digital attenuator is determined according to the phase shift and attenuation processing.

[0029]The gate levels of all MOS switches included in the number control phase and the digital attenuator are controlled by a corresponding driver, each having a level converter 32 and a digital buffer 33, all drives. The drive array ...

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PUM

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Abstract

The invention discloses a numerical control phase shift / digital attenuator temperature compensation circuit and method, and the circuit comprises a driver array, a digital control unit, a temperature sensor, and a phase shift circuit and / or an attenuation circuit. The circuit is characterized in that the phase shift circuit is formed by connecting a plurality of numerical control phase shifters in series; the attenuation circuit is formed by connecting a plurality of digital attenuators in series; the numerical control phase shifter is used for carrying out a certain amount of phase shift processing on the received signals, and the digital attenuator is used for carrying out a certain amount of attenuation processing on the received signals; the gate levels of all MOS switches in the numerical control phase shifter and the digital attenuator are respectively controlled by corresponding drivers; each driver is composed of a level converter and a digital buffer, and all the drivers form the driver array; the circuit can be widely applied to millimeter wave communication, broadband satellite communication and various phased array radar systems.

Description

Technical field[0001]The present invention relates to the field of phase shifting / digital attenuator, and more particularly to a number of control circuits and methods of digital control shift / digital attenuator.Background technique[0002]The phase-controlled array technology is widely used in various equipment such as radar, communication, electronic confrontation, where the number control phase / digital attenuator is one of the key components in the phased array; in phased array applications, it is necessary to The amplitude and phase of the signal are accurately controlled, and the CNC CNC phaser is used to control the signal phase, and the number control digital attenuator is used to control the amplitude of the signal, and the performance of the phase is huge to the performance of the whole machine. At the same time, the insertion loss of the phase shift / digital attenuator causes the noise coefficient of the receiving channel and the output power in the transmit channel.[...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H7/03
CPCH03H7/03
Inventor 谢卓恒范麟王强袁波徐骅刘永光李家祎万天才余晋川
Owner CHONGQING SOUTHWEST INTEGRATED CIRCUIT DESIGN
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