US 12,362,703 B2
Inductor-capacitor voltage-controlled oscillator with common-mode noise suppression
Omar E Elaasar, San Diego, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Sep. 29, 2023, as Appl. No. 18/478,211.
Prior Publication US 2025/0112593 A1, Apr. 3, 2025
Int. Cl. H03B 5/12 (2006.01)
CPC H03B 5/1253 (2013.01) [H03B 5/1215 (2013.01); H03B 5/1228 (2013.01); H03B 5/1265 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an antenna; and
a voltage-controlled oscillator (VCO) coupled to the antenna, the VCO comprising
a first switch,
a second switch comprising a second gate terminal and a second drain terminal,
a first inductor-capacitor tank circuit coupled to the first switch and the second switch,
a second inductor-capacitor tank circuit coupled to the first inductor-capacitor tank circuit,
a third switch comprising a third gate terminal and a third drain terminal, the third drain terminal coupled to the second inductor-capacitor tank circuit and directly coupled to the second gate terminal, and the third gate terminal directly coupled to the second drain terminal, and
a fourth switch coupled to the second inductor-capacitor tank circuit and the first switch.