US 11,689,188 B2 · Signal output circuit and method

Abstract

The present invention discloses a signal output circuit having anti-interference mechanism. An amplifier is electrically coupled to a power supply and a ground terminal through a first and a second amplifier bond wires, and generates an amplified output signal. A transformer circuit includes a transformer performing impedance transformation on the amplified output signal to generate a transformed output signal and a voltage-stabilizing capacitor suppressing second-order harmonics of the amplifier. A power-terminal side anti-interference circuit includes a power-terminal side bond wire and a power-terminal side anti-interference capacitor. The power-terminal side bond wire is electrically coupled to the ground terminal. The power-terminal side anti-interference capacitor is electrically coupled between the power-terminal side bond wire and the first amplifier bond wire, to cooperate with the power-terminal side bond wire, to filter out a first-order harmonics coupling signal coupled to the first amplifier bond wire by the transformed output signal generated by the transformer circuit.

Claims16

Dependent claims

A circuit having anti-interference mechanism, comprising:

an amplifier electrically coupled to a power supply through a first amplifier bond wire and to a ground terminal through a second amplifier bond wire, and configured to operate according to the power supply and generate an amplified output signal;
a transformer circuit comprising a transformer configured to perform impedance transformation on the amplified output signal to generate a transformed output signal, and a voltage-stabilizing capacitor configured to suppress second-order harmonics of the amplifier;
and
a power-terminal side anti-interference circuit comprising:
a power-terminal side bond wire electrically coupled to the ground terminal;
and
a power-terminal side anti-interference capacitor electrically coupled between the power-terminal side bond wire and the first amplifier bond wire, to operate together with the power-terminal side bond wire, so as to filter out a first-order harmonics coupling signal coupled to the first amplifier bond wire by the transformed output signal generated by the transformer circuit.

4 more elements

A method having anti-interference mechanism, comprising:

operating an amplifier according to a power supply and generating an amplified output signal by the amplifier, wherein the amplifier is electrically coupled to the power supply through a first amplifier bond wire and to a ground terminal through a second amplifier bond wire;
performing impedance transformation on the amplified output signal by a transformer comprised in a transformer circuit to generate a transformed output signal, and suppressing second-order harmonics of the amplifier by a voltage-stabilizing capacitor comprised in the transformer circuit;
operating a power-terminal side bond wire comprised by a power-terminal side anti-interference circuit together with a power-terminal side anti-interference capacitor comprised by the power-terminal side anti-interference circuit, so as to filter out a first-order harmonics coupling signal coupled to the first amplifier bond wire by the transformed output signal generated by the transformer circuit, wherein the power-terminal side bond wire is electrically coupled to the ground terminal and the power-terminal side anti-interference circuit is electrically coupled between the power-terminal side bond wire and the first amplifier bond wire.

Dependencies are inferred from the claim text.

Signal output circuit and method

Life of this patent

Signal output circuit and method

Life of this patent

Abstract

Claims16