High linearly WiGig baseband amplifier with channel select filter
AssigneeTensorcom, Inc.
InventorsZaw Soe, Kevin Jing, Steve Gao
Life of this patent
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Abstract
A circuit comprises a Sallen-Key filter, which includes a source follower that implements a unity-gain amplifier; and a programmable-gain amplifier coupled to the Sallen-Key filter. The circuit enables programmable gain via adjustment to a current mirror copying ratio in the programmable-gain amplifier, which decouples the bandwidth of the circuit from its gain settings. The programmable-gain amplifier can comprise a differential voltage-to-current converter, a current mirror pair, and programmable output gain stages. The Sallen-Key filter and at least one branch in the programmable-gain amplifier can comprise transistors arranged in identical circuit configurations.
Claims18
A WiGig baseband signal-processing circuit comprising:
- a first stage filter including a source follower configuring a unity-gain amplifier;
- and
- a programmable-gain amplifier coupled to the first stage filter, the baseband signal-processing circuit configured to at least provide a programmable gain by at least an adjustment to a current mirror copying ratio in the programmable-gain amplifier to decouple a bandwidth setting of the baseband signal-processing circuit from its gain setting.
Dependencies are inferred from the claim text.