Design of detection terminal for active millimetre-wave imaging

Abstract

The diode is used as the detection unit to receive the millimetre-wave signal directly. A circuit is made with an operational amplifier OP27 to amplify the signal. The magnification of the OP27 circuit is stable at 100 <100 kHz. The performances of the detection terminal and the low-pass filter amplifying circuit are compared in different distance between the source and the diode with a polarisation angle of 70°. The result shows good sensitivity of the detection terminal in active millimetre-wave imaging. A one-dimensional imaging test on the detection terminal is performed.

Keywords

• design engineering
• power supplies to apparatus
• operational amplifiers
• electromagnetic actuators
• millimetre wave imaging
• low-pass filters
• magnetostrictive devices
• amplifiers
• frequency 100.0 khz
• active millimetre-wave imaging
• low-pass filter amplifying circuit
• op27 circuit
• operational amplifier op27
• millimetre-wave signal
• detection unit
• detection terminal