Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2007-08-14
2007-08-14
Pascal, Robert (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S295000
Reexamination Certificate
active
11067800
ABSTRACT:
A system is provided for detecting the output power of power amplifier circuitry in a transmitter of a mobile terminal. Balanced power amplifier circuitry is provided having in-phase power amplifier circuitry and quadrature phase amplifier circuitry. A power detection system provides a power detection signal indicative of the output power of the balanced power amplifier circuitry based on an in-phase detect signal indicative of some measurable parameter that varies with power, such as current, in a final amplifier stage of the in-phase amplifier circuitry and a quadrature phase detect signal indicative of some measurable parameter that varies with power, such as current, in a final stage of the quadrature phase amplifier circuitry.
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RF Micro Devices, Inc.
Winthrow & Terranova PLLC
Wong Alan
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