US 11,870,445 B2
Radio frequency device and voltage generation and harmonic suppressor thereof
Chih-Sheng Chen, Taipei (TW); and Yu-Hsiang Chu, Taipei (TW)
Assigned to RichWave Technology Corp., Taipei (TW)
Filed by RichWave Technology Corp., Taipei (TW)
Filed on Aug. 25, 2021, as Appl. No. 17/411,068.
Claims priority of application No. 109146187 (TW), filed on Dec. 25, 2020.
Prior Publication US 2022/0209757 A1, Jun. 30, 2022
Int. Cl. H03K 5/1252 (2006.01); G05F 1/56 (2006.01)
CPC H03K 5/1252 (2013.01) [G05F 1/56 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A radio frequency (RF) device, comprising:
a voltage generation and harmonic suppressor configured to receive a RF signal to output at least one direct current (DC) voltage related to the RF signal, and configured to suppress a harmonic generated by the RF signal in the voltage generation and harmonic suppressor; and
a RF circuit configured to receive the RF signal, and configured to perform an operation according to the at least one DC voltage,
wherein the RF circuit further comprises:
a first voltage selection circuit configured to generate one of a high-level power supply voltage of a logic circuit and a low-level power supply voltage of the logic circuit according to a first DC voltage and a first base voltage;
wherein a level of the first DC voltage varies with power of the RF signal, and the first base voltage is independent of voltage variations of the first DC voltage.