Narrow-band tunable radio frequency (RF) power amplifiers and related methods
First Claim
1. A narrow band tunable radio frequency (RF) power amplifier, comprising:
- amplifier circuitry configured to receive a radio frequency (RF) signal and to generate an amplified RF output signal, the amplifier circuitry configured to provide a narrow band gain response tunable across a plurality of different frequency bands based upon one or more tuning control signals, and the narrow band gain response being linear across the different frequency bands; and
control circuitry configured to provide the one or more tuning control signals to the amplifier circuitry based upon a frequency band selection signal;
wherein each of the plurality of different frequency bands are associated with a different communication system;
wherein the narrow band gain response is configured to pass frequencies within a selected frequency band and to reject frequencies outside the selected frequency band; and
wherein the amplifier circuitry and the control circuitry are integrated on the same integrated circuit.
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Accused Products
Abstract
Narrow band tunable radio frequency (RF) power amplifiers (PAs) and related methods are disclosed that provide narrow band tunable gain responses, such as linear gain responses, that can be selected for different frequency bands. The narrow band tunable PAs thereby provide out-of-band rejection for different selectable frequency bands so that narrow band filters are not required in the transmit input path for communication devices. The pass band location and/or bandwidth for the narrow band gain response can be tuned using different techniques, as desired. The narrow band tunable PAs can also be fabricated using CMOS processing, if desired, so that a CMOS PA integrated circuit is provided.
35 Citations
24 Claims
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1. A narrow band tunable radio frequency (RF) power amplifier, comprising:
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amplifier circuitry configured to receive a radio frequency (RF) signal and to generate an amplified RF output signal, the amplifier circuitry configured to provide a narrow band gain response tunable across a plurality of different frequency bands based upon one or more tuning control signals, and the narrow band gain response being linear across the different frequency bands; and control circuitry configured to provide the one or more tuning control signals to the amplifier circuitry based upon a frequency band selection signal; wherein each of the plurality of different frequency bands are associated with a different communication system; wherein the narrow band gain response is configured to pass frequencies within a selected frequency band and to reject frequencies outside the selected frequency band; and wherein the amplifier circuitry and the control circuitry are integrated on the same integrated circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for operating a narrow band tunable radio frequency (RF) power amplifier, comprising:
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selecting a frequency band of operation for a narrow band tunable RF power amplifier from a plurality of different frequency bands, each of the plurality of different frequency bands being associated with a different communication system; tuning the narrow band tunable RF power amplifier to have a narrow band gain response for the selected frequency band, the narrow band gain response being configured to pass frequencies within a selected frequency band and to reject frequencies outside the selected frequency band; receiving a radio frequency (RF) signal; amplifying the RF input signal using the tuned narrow band gain response, the narrow band gain response being linear across the selected frequency band; and outputting the amplified RF signal; wherein the selecting, tuning, receiving, amplifying and outputting steps are performed within a single integrated circuit. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification