A COMPACT, MONOLITHIC MICROWAVE DEMODULATOR-MODULATOR FOR 64-QAM DIGITAL RADIO LINKS

被引：22

作者：

TELLIEZ, I ^{[1
]}

COUTURIER, AM ^{[1
]}

RUMELHARD, C ^{[1
]}

VERSNAEYEN, C ^{[1
]}

CHAMPION, P ^{[1
]}

FAYOL, D ^{[1
]}

机构：

[1] ALCATEL TELSPACE,MONOLITH MICROWAVE INTEGRATED CIRCUITS LAB,F-92734 NANTERRE,FRANCE

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1991年 / 39卷 / 12期

关键词：

Balanced Mixers - Digital Radio Links - In-Phase Splitters - Quadrature Phase Comparator;

D O I：

10.1109/22.106532

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The design, fabrication and performances of a monolithic microwave direct modulation modulator-demodulator are presented. The subsystem is designed to work in a 64-QAM digital radio link. At this level of modulation, it is necessary to have some possibilities of phase and amplitude trimming by external voltages to achieve sufficient accuracy. The circuit includes elementary functions such as quadrature and in-phase splitters, two balanced mixers, a quadrature phase comparator, and circuits giving the possibility to adjust phases and amplitudes for 64 QAM and higher level modulation. The design is such that the same chip can be used either as a direct demodulator or as a modulator. This complex circuit of small dimensions (2.7 mm x 3.65 mm) exhibits good demodulation and modulation performances. These overall performances of this monolithic circuit are achieved without degrading the dc yield.

引用

页码：1947 / 1954

页数：8

共 11 条

[1]

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[2]

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[3]

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[5]

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[6]

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[7]

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[9]

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19TH EUROPEAN MICROWAVE CONFERENCE : MICROWAVE 89, 1989, :731-736

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