ISO-less, SAW-less open-loop polar modulation transceiver for 3G/GSM/EDGE multi-mode/multi-band handset

In this paper, a new 3G/GSM/EDGE multi-mode/multi-band transceiver that achieves both the elimination of TX-SAW filter and the isolator using an open-loop polar modulation transmitter is presented. Sufficient ACLR performance is accomplished by a combination of parts-to-parts calibration and tempera...

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Bibliographic Details
Main Authors: Tsukizawa, Takayuki, Nakamura, Maki, Do, Gary, Igarashi, Masatoshi, Ishida, Kaoru
Format: Conference Proceeding
Language:English
Subjects:
3G mobile communication
Calibration
Degradation
Filters
GSM
ISO-less
Isolators
mobile phone
multi-mode
Open-loop polar modulation
SAW-less
Telephone sets
Temperature sensors
Transceivers
Transmitters
UMTS
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Description
Summary:In this paper, a new 3G/GSM/EDGE multi-mode/multi-band transceiver that achieves both the elimination of TX-SAW filter and the isolator using an open-loop polar modulation transmitter is presented. Sufficient ACLR performance is accomplished by a combination of parts-to-parts calibration and temperature offset compensation. ACLR meets 3GPP target specification at VSWR=3:1, with Rx band noise at PA output in UMTS band I of -132.3 dBm/Hz thus does not degrade receiver sensitivity. This paper includes design details and experimental results.
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.2010.5516707