NDLI: A 5.8 GHz QPSK modulator

Content Provider	IEEE Xplore Digital Library
Author	Psaltakis, M. Vafiadis, E. Sahalos, J.N.
Copyright Year	2000
Description	Author affiliation: Dept. of Phys., Aristotle Univ. of Thessaloniki, Greece (Psaltakis, M.)
Abstract	Summary form only given. A QPSK modulator can be configured with a 90/spl deg/ coupler, two balanced (BPSK) modulators, and a power combiner. In the modulator of the present design the LO carrier operating at f/sub c=/5.8 GHz is connected to the input of a conventional 90/spl deg/ branch line hybrid producing the two signal paths in phase quadrature, to be used in BPSK modulators. The stream of polar (NRZ) pulses applied to each modulator has a data rate of 100 Mbps. Balanced modulators implemented as passive balanced mixers by use of rat-race hybrids and Schottky diodes. For diodes, the HP device HSMS-202 has been used. It contains a pair of Schottky diodes properly connected for mixer applications and it is offered in a surface mount package suitable for MIC implementations.
Starting Page	108
Ending Page	109
File Size	90195
Page Count	2
File Format	PDF
ISBN	0780364287
DOI	10.1109/AEM.2000.943265
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-29
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Quadrature phase shift keying Schottky diodes Binary phase shift keying Phase modulation Pulse modulation Power combiners Signal design Optical signal processing Packaging Microwave integrated circuits
Content Type	Text
Resource Type	Article

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