A Polar Transmitter Using Interleaving Pulse Modulation for Multimode Handsets

This paper presents a highly efficient polar transmitter using interleaving pulse modulation for multiple communication standards. Using the proposed interleaving pulse modulation technique, a polar transmitter can suppress the odd-order output spurs deeply with a feasible value of essential samplin...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2011-08, Vol.59 (8), p.2083-2090
Main Authors: Hao-Shun Yang, Jau-Horng Chen, Chen, Y-J E.
Format: Article
Language:English
Subjects:
Amplifiers
Applied sciences
Bands
Calibration
Circuit properties
Code Division Multiple Access
Electric, optical and optoelectronic circuits
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Enhanced data rates for GSM evolution (EDGE)
Equipments and installations
Evolution
Exact sciences and technology
global system for mobile communication (GSM)
Global System for Mobile Communications
GSM
handset
Microwaves
mobile phone
Mobile radiocommunication systems
Multiaccess communication
multimode
polar transmitters
power amplifier (PA)
Pulse modulation
Pulse width modulation
Radiocommunications
Spectra
Spread spectrum communication
Telecommunications
Telecommunications and information theory
Transmitters
Transmitters. Receivers
wideband code division multiple access (WCDMA)
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Summary:This paper presents a highly efficient polar transmitter using interleaving pulse modulation for multiple communication standards. Using the proposed interleaving pulse modulation technique, a polar transmitter can suppress the odd-order output spurs deeply with a feasible value of essential sampling frequency and keep the residual spurs from falling into the receive bands. To validate the proposed technique, a prototype polar transmitter was constructed and evaluated. Using global system for mobile communications, enhanced data rates for GSM evolution, and wideband code division multiple access (WCDMA) signals at 836.5 MHz, the polar transmitter achieved 68%, 45.5%, and 41.2% power-added efficiency at output power levels of 28, 26, and 25 dBm, respectively. The measurement results were able to pass the spectral requirements defined by the respective standards without the use of any pre-distortion or calibration techniques. Moreover, the polar transmitter was able to achieve an output dynamic range of 80 dB required by the WCDMA standard.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2011.2146269