Patent ID: 11876543
Assignee: HANGZHOU GEO-CHIP TECHNOLOGY CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. The mixer circuit of claim 2, wherein the low-pass filter further comprises: a third capacitor, a fourth capacitor, a third voltage amplifier, and a fourth voltage amplifier,
two terminals of the third capacitor are respectively connected to the I-channel inverting input terminal of the passive quadrature mixer and a ground output terminal of the third voltage amplifier, and a ground input terminal of the third voltage amplifier is connected to the Q-channel inverting input terminal of the passive quadrature mixer,
two terminals of the fourth capacitor are respectively connected to the Q-channel inverting input terminal of the passive quadrature mixer and a ground output terminal of the fourth voltage amplifier, and a ground input terminal of the fourth voltage amplifier is connected to the I-channel inverting input terminal of the passive quadrature mixer.