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
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[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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