Thermal Gain Variation Compensation Technique Using Thermistor on HPA Module for W-CDMA System

Akira KURIYAMA; Shigehiro YUYAMA; Masami OHNISHI; Hidetoshi MATSUMOTO; Tomonori TANOUE; Isao OHBU; Fuminori MORISAWA

doi:10.1093/ietele/e91-c.12.1933

Thermal Gain Variation Compensation Technique Using Thermistor on HPA Module for W-CDMA System

Akira KURIYAMA, Shigehiro YUYAMA, Masami OHNISHI, Hidetoshi MATSUMOTO, Tomonori TANOUE, Isao OHBU, Fuminori MORISAWA

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The thermal gain variation of a high-power amplifier (HPA) module for a wide-band code division multiple access (W-CDMA) system application was reduced to within 1 dB by applying a thermistor to compensate the gain variation. Two techniques for gain variation compensation with respect to temperature were investigated: base bias control according to temperature, and use of a thermistor in a matching network. Experimental comparison of two techniques indicated that the thermistor-based technique was more effective in reducing the gain variation without affecting linearity. A fabricated two-stage HPA module with a thermistor in its input matching network achieved a small gain variation within 1 dB and 5 MHz offset adjacent channel leakage power ratio (first ACLR) below -36 dBc over the temperature range from -10 to +85C, where the first ACLR was measured under a load-mismatched condition with a voltage standing wave ratio (VSWR) of 1.4:1.

Publication: IEICE TRANSACTIONS on Electronics Vol.E91-C No.12 pp.1933-1940

Publication Date: 2008/12/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1093/ietele/e91-c.12.1933

Type of Manuscript: PAPER

Category: Microwaves, Millimeter-Waves

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Akira KURIYAMA, Shigehiro YUYAMA, Masami OHNISHI, Hidetoshi MATSUMOTO, Tomonori TANOUE, Isao OHBU, Fuminori MORISAWA, "Thermal Gain Variation Compensation Technique Using Thermistor on HPA Module for W-CDMA System" in IEICE TRANSACTIONS on Electronics, vol. E91-C, no. 12, pp. 1933-1940, December 2008, doi: 10.1093/ietele/e91-c.12.1933.
Abstract: The thermal gain variation of a high-power amplifier (HPA) module for a wide-band code division multiple access (W-CDMA) system application was reduced to within 1 dB by applying a thermistor to compensate the gain variation. Two techniques for gain variation compensation with respect to temperature were investigated: base bias control according to temperature, and use of a thermistor in a matching network. Experimental comparison of two techniques indicated that the thermistor-based technique was more effective in reducing the gain variation without affecting linearity. A fabricated two-stage HPA module with a thermistor in its input matching network achieved a small gain variation within 1 dB and 5 MHz offset adjacent channel leakage power ratio (first ACLR) below -36 dBc over the temperature range from -10 to +85C, where the first ACLR was measured under a load-mismatched condition with a voltage standing wave ratio (VSWR) of 1.4:1.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.12.1933/_p

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@ARTICLE{e91-c_12_1933,
author={Akira KURIYAMA, Shigehiro YUYAMA, Masami OHNISHI, Hidetoshi MATSUMOTO, Tomonori TANOUE, Isao OHBU, Fuminori MORISAWA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Thermal Gain Variation Compensation Technique Using Thermistor on HPA Module for W-CDMA System},
year={2008},
volume={E91-C},
number={12},
pages={1933-1940},
abstract={The thermal gain variation of a high-power amplifier (HPA) module for a wide-band code division multiple access (W-CDMA) system application was reduced to within 1 dB by applying a thermistor to compensate the gain variation. Two techniques for gain variation compensation with respect to temperature were investigated: base bias control according to temperature, and use of a thermistor in a matching network. Experimental comparison of two techniques indicated that the thermistor-based technique was more effective in reducing the gain variation without affecting linearity. A fabricated two-stage HPA module with a thermistor in its input matching network achieved a small gain variation within 1 dB and 5 MHz offset adjacent channel leakage power ratio (first ACLR) below -36 dBc over the temperature range from -10 to +85C, where the first ACLR was measured under a load-mismatched condition with a voltage standing wave ratio (VSWR) of 1.4:1.},
keywords={},
doi={10.1093/ietele/e91-c.12.1933},
ISSN={1745-1353},
month={December},}

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TY - JOUR
TI - Thermal Gain Variation Compensation Technique Using Thermistor on HPA Module for W-CDMA System
T2 - IEICE TRANSACTIONS on Electronics
SP - 1933
EP - 1940
AU - Akira KURIYAMA
AU - Shigehiro YUYAMA
AU - Masami OHNISHI
AU - Hidetoshi MATSUMOTO
AU - Tomonori TANOUE
AU - Isao OHBU
AU - Fuminori MORISAWA
PY - 2008
DO - 10.1093/ietele/e91-c.12.1933
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2008
AB - The thermal gain variation of a high-power amplifier (HPA) module for a wide-band code division multiple access (W-CDMA) system application was reduced to within 1 dB by applying a thermistor to compensate the gain variation. Two techniques for gain variation compensation with respect to temperature were investigated: base bias control according to temperature, and use of a thermistor in a matching network. Experimental comparison of two techniques indicated that the thermistor-based technique was more effective in reducing the gain variation without affecting linearity. A fabricated two-stage HPA module with a thermistor in its input matching network achieved a small gain variation within 1 dB and 5 MHz offset adjacent channel leakage power ratio (first ACLR) below -36 dBc over the temperature range from -10 to +85C, where the first ACLR was measured under a load-mismatched condition with a voltage standing wave ratio (VSWR) of 1.4:1.
ER -