Patent ID: 11888453
Assignee: QUALCOMM INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 18:
19. A first stage of an amplifier, comprising;
an input node;
a first transconductance transistor;
a first coil coupled between the input node and a node for a reference voltage;
a second coil coupled between the input node and a gate of the first transconductance transistor;
a third coil coupled between a source of the first transconductance transistor and the node for the reference voltage, wherein the first coil, the second coil, and the third coil are all mutually coupled to form an input transformer; and
an input capacitor coupled between the input node and ground, the input capacitor being configured with the second coil to form a low-pass filter, wherein the first coil and a gate-to-source capacitance of the first transconductance transistor are configured to form a high-pass filter.