US 2023/0216460 A1 · Transmitter circuit

Abstract

A transmitter circuit is provided. The transmitter circuit has an input port, a first transmission node, a second transmission node, a third transmission node, and a fourth transmission node and includes a first operational amplifier, a first output stage, a first resistor-capacitor network, a first switch group coupled between the first resistor-capacitor network and the input port, a first impedance matching circuit coupled to the first output stage, the first transmission node, and the second transmission node, a second operational amplifier, a second output stage, a second resistor-capacitor network, a second switch group coupled between the second resistor-capacitor network and the input port, and a second impedance matching circuit coupled to the second output stage, the third transmission node, and the fourth transmission node.

Claims16

Dependent claims

A transmitter circuit having an input port, a first transmission node, a second transmission node, a third transmission node, and a fourth transmission node and comprising:

a first operational amplifier;
a first output stage coupled to the first operational amplifier;
a first resistor-capacitor network coupled to the first output stage and the first operational amplifier;
a first switch group coupled between the first resistor-capacitor network and the input port;
a first impedance matching circuit coupled to the first output stage, the first transmission node, and the second transmission node;
a second operational amplifier;
a second output stage coupled to the second operational amplifier;
a second resistor-capacitor network coupled to the second output stage and the second operational amplifier;
a second switch group coupled between the second resistor-capacitor network and the input port;
and
a second impedance matching circuit coupled to the second output stage, the third transmission node, and the fourth transmission node.

8 more elements

A transmitter circuit having a first transmission node, a second transmission node, a third transmission node, and a fourth transmission node and comprising:

an operational amplifier;
a first output stage coupled to the operational amplifier;
a first resistor-capacitor network coupled to the first output stage;
a first switch group coupled between the first resistor-capacitor network and the operational amplifier;
a first impedance matching circuit coupled to the first output stage, the first transmission node, and the second transmission node;
a second output stage coupled to the operational amplifier;
a second resistor-capacitor network coupled to the second output stage;
a second switch group coupled between the second resistor-capacitor network and the operational amplifier;
a second impedance matching circuit coupled to the second output stage, the third transmission node, and the fourth transmission node;
a common mode feedback (CMFB) circuit;
a first switch coupled between the CMFB circuit and the first output stage;
and
a second switch coupled between the CMFB circuit and the second output stage.

10 more elements

Dependencies are inferred from the claim text.

Transmitter circuit

Life of this patent

Transmitter circuit

Life of this patent

Abstract

Claims16