Multi-band, inductor re-use low noise amplifier

Details Multi-band, inductor re-use low noise amplifier Multi-band, inductor re-use low noise amplifier

2008-04-22

2009-11-24

Pascal, Robert (Department: 2817)

Amplifiers

With plural amplifier channels

Amplifying different frequencies in different channels

C330S306000

Reexamination Certificate

active

07622989

ABSTRACT:
Described herein are multi-band LNAs that reuse inductors for different frequency bands to minimize chip area. In an embodiment, a multi-band LNA is capable of operating in a narrowband (NB) and a wideband (WB) while reusing at least one input impedance matching inductor and at least one load inductor for both bands. The reuse of inductors results in a more efficient use of chip area. In an exemplary embodiment, the LNA comprises a common source transistor and a common gate transistor. In this embodiment, the LNA operates in a common source configuration using the common source transistor to amplify input signals in the NB, and operates in a common gate configuration using the common gate transistor to amplify input signals in the WB. The LNA reuses an input impedance matching inductor and a load inductor in both configurations, and thus both bands.

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