Invention Grant
- Patent Title: Automatic frequency shift compensation (AFSC) in resonant tank circuits over the process variation
-
Application No.: US17103880Application Date: 2020-11-24
-
Publication No.: US11451194B2Publication Date: 2022-09-20
- Inventor: Sergey Anderson
- Applicant: DSP Group Ltd.
- Applicant Address: IL Herzliya
- Assignee: DSP Group Ltd.
- Current Assignee: DSP Group Ltd.
- Current Assignee Address: IL Herzliya
- Agency: Reches Patents
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F1/02 ; H03F3/193 ; H03F1/56

Abstract:
A low noise amplifier that may include a first input port, a second input port, a first capacitor, a second capacitor, a first variable capacitor, a second variable capacitor, an inductor, a bias circuit, a tuning circuit, a first output circuit having a first output, a second output circuit having a second output; wherein the first input port is electrically coupled to a first end of the second variable capacitor, to a first end of the first capacitor, to an input of the first output circuit, and to a first port of the inductor; wherein the second input port is electrically coupled to a second end of the first variable capacitor, to a second end of the second capacitor, to an input of the second output circuit, and to a second port of the inductor; wherein a first port of the first varactor is electrically coupled to a second end of the first capacitor; wherein a second port of the second varactor is electrically coupled to a first end of the second capacitor; wherein the bias circuit is configured to supply a bias voltage to a third port of the inductor; and wherein the tuning circuit is configured to control a capacitance of the first varactor and a capacitance of the variable capacitor.
Public/Granted literature
- US20210184631A1 AUTOMATIC FREQUENCY SHIFT COMPENSATION (AFSC) IN RESONANT TANK CIRCUITS OVER THE PROCESS VARIATION Public/Granted day:2021-06-17
Information query