US 12,413,211 B2
Frequency mixing circuit with multi-transistor architecture
Yi-Ching Wu, HsinChu (TW); and Chia-Jun Chang, HsinChu (TW)
Assigned to Realtek Semiconductor Corp., HsinChu (TW)
Filed by Realtek Semiconductor Corp., HsinChu (TW)
Filed on Sep. 6, 2023, as Appl. No. 18/242,549.
Claims priority of application No. 111140597 (TW), filed on Oct. 26, 2022.
Prior Publication US 2024/0146287 A1, May 2, 2024
Int. Cl. H03K 5/00 (2006.01); H03K 17/56 (2006.01)
CPC H03K 5/00006 (2013.01) [H03K 17/56 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A frequency mixing circuit, comprising:
a first transistor, having a control terminal, a first terminal and a second terminal, wherein the control terminal of the first transistor is configured to receive an oscillation signal, the first terminal of the first transistor is configured to output a mixed signal, and the second terminal of the first transistor is configured to receive a source signal; and
a second transistor, having a control terminal, a first terminal and a second terminal, wherein the control terminal of the second transistor is coupled to the second terminal of the first transistor, the first terminal of the second transistor is coupled to the first terminal of the first transistor, and the second terminal of the second transistor is coupled to the control terminal of the first transistor;
wherein when the frequency mixing circuit is operated to perform frequency mixing, the second transistor remains in a non-conductive state.