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US 11,101,829 B1Granted
Receiver with multi-spectrum parallel amplification
AssigneeInterstate Electronics Corporation
InventorDavid Duane Chapman
Life of this patent
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Abstract
A radio receiver has a front end having a shared amplification path for both radio frequency signals and intermediate frequency signals. In one example, the shared amplification path can include a low noise amplifier and an attenuator. By amplifying both radio frequency (RF) signals and intermediate frequency (IF) signals with the same shared amplification path, gains in power efficiency, and reductions in cost and circuit size can be achieved.
Claims28
An apparatus comprising:
- a first N-plexer arranged to perform frequency multiplexing, the first N-plexer comprising:
- a first port, the first port configured to receive one or more signals comprising one or more signals of a first radio frequency (RF) band;
- a second port, the second port configured to receive one or more signals comprising one or more signals of a first intermediate frequency (IF) band;
- and
- a third port, the third port configured to provide signals comprising the one or more signals of the first RF band and the one or more signals of the first IF band;
- a shared amplification path having an input node and an output node,
- wherein the input node is coupled to the third port of the first N-plexer, wherein the shared amplification path comprises a first amplifier configured to amplify one more signals from at least both:
- the first RF band, and
- the first IF band;
- a mixer configured to multiply a local oscillator (LO) signal with one or more signals comprising the one or more amplified signals of the first RF band to generate a plurality of signals including one or more signals of the first IF band.
7 more elements
A method of amplifying a plurality of signals, the method comprising:
- receiving one or more signals comprising one or more signals of a first radio frequency (RF) band at a first port of a first N-plexer;
- receiving one or more signals comprising one or more signals of a first intermediate frequency (IF) band at a second port of the first N-plexer;
- frequency multiplexing the signals of the first RF band and the first IF band to generate multiplexed RF and IF band signals;
- providing the multiplexed RF and IF band signals at a third port of the first N-plexer;
- amplifying the multiplexed RF and IF band signals in a shared amplification path to generate one or more amplified signals of the first RF band and one or more amplified signals of the first IF band, wherein the shared amplification path comprises a first amplifier;
- mixing a local oscillator (LO) signal with one or more signals comprising the one or more amplified signals of the first RF band to generate a plurality of signals including one or more signals of the first IF band.
3 more elements
Dependencies are inferred from the claim text.