Title :
A general method for passband quantization noise suppression in pulsed transmitter architectures
Author :
Gustavsson, Ulf ; Eriksson, Thomas ; Fager, Christian
Author_Institution :
GigaHertz Centre, Ericsson AB, Stockholm, Sweden
Abstract :
In this paper we describe a novel method for selective bandpass cancellation of the quantization-noise that occurs in pulsed transmitter architectures, where the signal is partially or completely quantized. A carrier bursting transmitter architecture, where the amplitude part is quantized and then recombined with a phase-modulated RF carrier, is used as a general example to demonstrate the principles of the method proposed. Measurements on a high efficiency 10 W LDMOS PA working at 1 GHz are used to verify the theoretical results.
Keywords :
UHF power amplifiers; band-pass filters; interference suppression; microwave power amplifiers; phase modulation; quantisation (signal); radio transmitters; bandpass filter; carrier bursting; frequency 1 GHz; microwave power amplifier system; noise suppression; passband quantization; phase-modulated RF carrier; pulsed transmitter architecture; selective bandpass cancellation; Band pass filters; Hardware; Narrowband; Noise cancellation; Noise level; Passband; Power amplifiers; Pulse amplifiers; Quantization; Transmitters; ∑Δ-modulator; Carrier bursting; bandpass filter; noise-shaping; power amplifier; quantization noise;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5166000