Analog front end receivers with resonant mixer configured to reject local oscillator harmonics
AssigneeMarvell International Ltd.
InventorsIvan Fabiano, Marco Sosio, Antonio Liscidini, Rinaldo Castello
Life of this patent
Estimating the term…
Abstract
Some of the embodiments of the present disclosure provide a receiver comprising a class AB common-gate transformer-based low noise transconductance amplifier (LNT) configured to receive an electromagnetic signal, a passive resonant mixer electrically connected to (i) an output port of the class AB common-gate transformer-based LNT and (ii) a local oscillator. The passive resonant mixer can be configured to reject at least one harmonic of the local oscillator. The receiver also comprises a base-band module electrically connected to an output port of the passive resonant mixer.
Claims17
A receiver comprising:
- a low-noise amplifier (LNA) configured to receive an electromagnetic signal, wherein the LNA includes a transformer-based class A/B common gate;
- a passive resonant mixer electrically connected to (i) an output port of the transformer and (ii) a local oscillator divider, wherein the passive resonant mixer is configured to reject at least one harmonic of a local oscillator;
- a base-band module electrically connected to an output port of the passive resonant mixer, wherein the LNA comprises a single-ended input transformer, and wherein the electromagnetic signal comprises a time-division-duplexing mode electromagnetic signal;
- and
- a single ended/differential input low noise transconductance amplifier (LNT) configured to receive a time/frequency-division-duplexing mode electromagnetic signal.
A circuit configured to operate on (i) time-division-duplexing-based electromagnetic signals and (ii) frequency-division-duplexing-based electromagnetic signals, wherein the circuit does not include a surface acoustic wave (SAW) amplifier, and wherein the circuit comprises:
- a single-ended input low noise amplifier (LNA) configured to receive the time-division-duplexing-based electromagnetic signals;
- a differential-input low noise amplifier (LNA) configured to receive the frequency-division-duplexing-based electromagnetic signals;
- a first resonant mixer electrically connected to (i) an output port of the single-ended input LNA and (ii) a local oscillator;
- a second resonant mixer electrically connected to (i) an output port of the differential-input LNA and (ii) the local oscillator;
- and
- a base-band module electrically connected to (i) an output port of the first resonant mixer and (ii) an output port of the second resonant mixer.
A receiver comprising:
- a low-noise amplifier (LNA) configured to receive a time-division-duplexing mode electromagnetic signal, wherein the LNA comprises a single-ended input transformer;
- a single ended/differential input low noise transconductance amplifier (LNT) configured to receive a time/frequency-division-duplexing mode electromagnetic signal;
- a passive resonant mixer electrically connected to (i) an output port of the transformer and (ii) a local oscillator divider, wherein the passive resonant mixer is configured to reject at least one harmonic of a local oscillator;
- and
- a base-band module electrically connected to an output port of the passive resonant mixer.
Dependencies are inferred from the claim text.