Title :
A Millimeter Wave Direct QPSK modulator MMIC Using PIN Technology And A Novel Approach to Self Error-Correction
Author :
Magrisso, Tsufit ; Madjar, Asher
Author_Institution :
RAFAEL - P. O. Box 2250 (code 8G), Haifa, Israel.
Abstract :
In this paper we present two topologies of QPSK (Quadrature Phase Shift Keying) Modulator for direct carrier modulation at 29.5 GHz for satellite communications using PIN technology. Previously published designs use PHEMT technology. PIN diodes allow operation at high power level (several watts at Ka band) and yield better switching performance compared to PHEMT switches. Our designs exhibit wide bandwidth (3GHz) and reasonable loss (5.5 db). In addition, we present a novel method for a self error correction QPSK modulator, which can yield high quality modulator at millimeter waves.
Keywords :
Communication switching; Communications technology; MMICs; Millimeter wave technology; PHEMTs; Phase modulation; Quadrature phase shift keying; Satellite communication; Switches; Topology;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339434
