Ku waveband CMOS six-bit numerical control phase shifter

Abstract

The invention discloses a Ku waveband CMOS six-bit numerical control phase shifter which comprises a 5.625-degree phase shift circuit (1), a 11.25-degree phase shift circuit (2), a 22.5-degree phase shift circuit (3), a 45-degree phase shift circuit (4), a 90-degree phase shift circuit (5) and a 180-degree phase shift circuit. The circuits are sequentially connected in series. The output end of the 5.625-degree phase shift circuit (1) is connected with the input end of the 11.25-degree phase shift circuit (2), the output end of the 11.25-degree phase shift circuit (2) is connected with the input end of the 22.5-degree phase shift circuit (3), the output end of the 22.5-degree phase shift circuit (3) is connected with the input end of the 45-degree phase shift circuit (4), the output end ofthe 45-degree phase shift circuit (4) is connected with the input end of the 90-degree phase shift circuit (5), and the output end of the 90-degree phase shift circuit (5) is connected with the inputend of the 180-degree phase shift circuit (5). The phase shift control end comprises first to sixth control ends (V1 to V6), and the control circuit comprises first to sixth inverters (INV1 to INV6).The phase shift range of the phase shifter can cover 0-360 degrees, the working frequency band is wide, and the phase shifter is easy to integrate into a silicon-based CMOS system chip.

Description

technical field [0001] The invention relates to the technical field of radio frequency microwave integrated circuits, in particular to a Ku-band CMOS six-bit numerically controlled phase shifter. Background technique [0002] A phase shifter is widely used as a signal control function module in microwave communication, radar and measurement systems, and is mainly used to change the phase difference between the input signal and the output signal. The digitally controlled phase shifter, especially an important device of the active phased array, can provide the function of electronic beam scanning, and adopts a passive structure with extremely low power consumption. [0003] The traditional Ku-band CMOS passive phase shifter has the following problems: 1. The parasitic parameters in this frequency band have a great influence, and the phase shifting accuracy is low; 2. The phase shifting range cannot cover 0 degrees to 360 degrees; 3. The working bandwidth is narrow; 4. Using T...

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Problems solved by technology

[0003] The traditional Ku-band CMOS passive phase shifter has the following problems: 1. The parasitic parameters in this frequency band have a great influence, and the phase shifting accuracy is low; 2. The phase shifting range cannot cover 0 de

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