Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2005-05-10
2009-02-24
Le, Nhan T (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S108000, C455S110000, C455S127100, C455S240100
Reexamination Certificate
active
07496339
ABSTRACT:
An amplitude calibration element comprises a linear driver configured to receive the output of a modulator, the modulator output comprising a voltage signal having an amplitude modulated (AM) portion, a differential detector configured to receive an output of the linear driver and develop a differential signal corresponding to the AM portion, and a differential comparator configured to receive the output of the differential detector and a differential reference signal, the differential comparator configured to develop a gain control signal to control the gain of the linear driver.
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Tirdad Sowlati et al., Quad-Band GSM/GPRS/EDGE Polar Loop Transmitter, IEEE Journal of Solid State Circuits, vol. 39, No. 12, Dec. 2004, pp. 2179-2189.
Balteanu Florinel G.
Gheorghe Ionel
Pullela Rajasekhar
Sowlati Tirdad
Le Nhan T
Skyworks Solutions Inc.
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