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US 7,746,173 B1Granted
Power amplifier with output harmonic resonators
AssigneeTriQuint Semiconductor, Inc.
InventorsHua-Quen Tserng, Warren Robert Gaiewski, David Michael Fanning
Life of this patent
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Abstract
Embodiments of circuits and systems for a radio frequency (RF) power amplifier employing output harmonic resonators are disclosed. The RF power amplifiers may include amplification circuitry having unit cells and output harmonic resonators co-disposed on a chip. In some embodiments, each unit cell may be coupled with a respective output harmonic resonator. Other embodiments may be described and claimed.
Claims23
A circuit comprising:
- a plurality of unit cells, each having an input to receive a radio frequency (RF) signal and an output to transmit an amplified RF signal;
- and
- a plurality of output harmonic resonators respectively coupled with the outputs of the plurality of unit cells to provide harmonic termination impedances to the outputs of the plurality of unit cells, wherein each of the plurality of output harmonic resonators comprises a first inductor coupled in parallel with a capacitor and a second inductor coupled in series with the first inductor and the capacitor.
A circuit comprising:
- a plurality of unit cells disposed on a chip, each having an input to receive a radio frequency (RF) signal and an output to transmit an amplified RF signal;
- and
- one or more output harmonic resonators, disposed on the chip, coupled with outputs of the plurality of unit cells to harmonically tune an output impedance for each of the plurality of unit cells, wherein each of the plurality of output harmonic resonators comprises a first inductor coupled in parallel with a capacitor, and a second inductor coupled in series with the first inductor and the capacitor.
A system comprising:
- a transmitter including a radio frequency (RF) power amplifier having amplification circuitry with a plurality of unit cells, each having an input
- to receive an RF signal and an output to transmit an amplified RF signal, and a plurality of output harmonic resonators respectively coupled with the
- outputs of the plurality of unit cells to provide harmonic termination impedances to the outputs of the plurality of unit cells, wherein each of the plurality of output harmonic resonators comprises a first inductor coupled in parallel with a capacitor, and a second inductor coupled in series with the first inductor and the capacitor;
- and
- an antenna structure coupled with the transmitter and configured to facilitate an over-the-air (OTA) transmission of the amplified RF signal.
2 more elements
A method comprising:
- amplifying, with a plurality of unit cells, a radio-frequency signal;
- and
- harmonically tuning an output of each of the plurality of unit cells with a respective one of a plurality of output harmonic resonators, wherein each of the plurality of output harmonic resonators comprises a first inductor coupled in parallel with a capacitor, and a second inductor coupled in series with the first inductor and the capacitor.
A circuit comprising:
- a plurality of unit cells, each having an input to receive a radio frequency (RF) signal and an output to transmit an amplified RF signal;
- and
- a plurality of output harmonic resonators respectively coupled with the outputs of the plurality of unit cells to provide harmonic termination impedances to the outputs of the plurality of unit cells, wherein each of the plurality of output harmonic resonators comprises a first capacitor coupled in series with an inductor, and a metal-insulator-metal (MIM) capacitor coupled in parallel with the first capacitor and the inductor.
Dependencies are inferred from the claim text.