Telecommunications – Transmitter – Power control – power supply – or bias voltage supply
Reexamination Certificate
2005-10-11
2005-10-11
Urban, Edward F. (Department: 2685)
Telecommunications
Transmitter
Power control, power supply, or bias voltage supply
C455S253200, C455S127200, C330S12400D, C330S132000
Reexamination Certificate
active
06954623
ABSTRACT:
A power amplifier having a phase shift and impedance transformation element is disclosed. The power amplifier comprises a plurality of amplification paths, a first phase shift element at an input of each amplification path and a second phase shift element at an output of each amplification path. The amplifier also comprises an impedance transformation element associated with the second phase shift element and a power combiner configured to combine an output of each amplification path into a single output.
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patent: 6650200 (2003-11-01), Culliton et al.
patent: 2004/0185916 (2004-09-01), Chang et al.
A Low Distortion and High Efficiency Parallel-Operation Power Amplifier Combined in Different Phases in Wide Range of Load Impedances, Ikeda, et al.,1996 IEEE MTT-S Digest, pp. 535-538.
A 3.2-V Operation Single-Chip Dual-Band AlGaAs/GaAs HBT MMIC Power Amplifier with Active Feedback Circuit Technique, Yamamoto, et al.,IEEE Journal of Solid-State Circuits, vol. 35, No. 8, Aug. 2000, pp. 1109-1120.
A Low Distortion and High Efficiency Parallel-Operation Power Amplifier Combined in Different Phases in Wide Range of Load Impedances, Ikeda, et al.,1996 IEEE MTT-S Digest, pp. 535-538.
A 3.2-V Operation Single-Chip Dual-Band AlGaAs/GaAs HBT MMIC Power Amplifier with Active Feedback Circuit Technique, Yamamoto, et al.,IEEE Journal of Solid-State Circuits, vol. 35, No. 8, Aug. 2000, pp. 1109-1120.
Chang Shiaw W.
Cheng Nai-Shuo
Finlay Hugh J.
Park Bon-Seok
Chow Charles
Skyworks Solutions Inc.
Urban Edward F.
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