NDLI: Direct Carrier Six-Port Modulator Using a Technique to Suppress Carrier Leakage

Content Provider	IEEE Xplore Digital Library
Author	Östh, J. Owais Karlsson, M. Serban, A. Shaofang Gong Karlsson, P.
Copyright Year	1963
Abstract	This paper presents a direct carrier six-port modulator. To allow arbitrary load impedances to be used and for suppression of carrier leakage, a new circuit architecture with a technique to suppress carrier leakage is proposed and implemented. A theoretical model of the proposed modulator is derived. A prototype modulator utilizing diodes for impedance generation is designed and fabricated for a center frequency of 7.5 GHz for verification of the proposed technique. Measurements show good modulation properties when a 16 quadrature amplitude modulation signal at 100 Msymbol/s is generated, as well as good carrier leakage suppression.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	741
Ending Page	747
Page Count	7
File Size	563287
File Format	PDF
ISSN	00189480
Volume Number	59
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage control Modulation Schottky diodes Correlators Impedance Baseband Load modeling six-port correlator Carrier leakage suppression direct carrier modulator
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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Direct Carrier Six-Port Modulator Using a Technique to Suppress Carrier Leakage