US 9,002,309 B2 · Tunable multi-band receiver

Abstract

A tunable multi-band receiver supporting operation on a plurality of frequency bands is disclosed. In an exemplary design, the tunable multi-band receiver includes an antenna tuning network, a tunable notch filter, and at least one low noise amplifier (LNA). The antenna tuning network tunes an antenna (e.g., a diversity antenna) to a receive band in a plurality of receive bands. The tunable notch filter is tunable to a transmit band in a plurality of transmit bands and attenuates signal components in the transmit band. One LNA among the at least one LNA amplifies an output signal from the tunable notch filter. The tunable multi-band receiver may further include one or more additional tunable notch filters to further attenuate the signal components in the transmit band.

Claims24

Dependent claims

An apparatus comprising:

an antenna tuning network configured to tune in a single receive path an antenna to a receive band from among a plurality of receive bands capable of being tuned to in the single receive path by the antenna tuning network;
a tunable notch filter operatively coupled to the antenna tuning network and configured to attenuate in the single receive path signal components in a transmit band;
and
a plurality of low noise amplifiers (LNAs), each LNA of the plurality of LNAs configured for selectively coupling to the tunable notch filter and configured to amplify in the single receive path an output signal from the tunable notch filter.

1 more element

Dependencies are inferred from the claim text.

Tunable multi-band receiver

Life of this patent

Tunable multi-band receiver

Life of this patent

Abstract

Claims24