DocumentCode
2153294
Title
New Cold FET I-Q Linear Vector Modulator Topology
Author
Boulanger, Cyrille ; Lapierre, Luc ; Gizard, Francis
Author_Institution
CNES 18, Av E. Belin 31401 Toulouse cedex. Phone: (33)5.61.27.37.85 Fax: (33)5.61.28.26.13 E-Mail: cyrille.boulanger@cnes.fr
fYear
2000
fDate
Oct. 2000
Firstpage
1
Lastpage
3
Abstract
This paper presents the design, manufacture and test of a new cold FET monolithic I-Q vector modulator, The circuit has been developed in 8-8.4 GHz X band but can be transposed at any frequency range. The innovation is that the IF data signals are applied to the FET gates. The use of cold FETs allows achieving a 0.8 dB and 6° accuracy with only one voltage tuning on the whole bandwidth and the ¿25°C to +50°C temperature range. There is no DC consumption for the microwave modulator, The accuracy achieved at this first run is yet compatible with new coding and modulating systems and we have investigated several ways to improve the design.
Keywords
Circuit optimization; Circuit testing; Circuit topology; Frequency; Microwave FETs; Modulation coding; Pulp manufacturing; Technological innovation; Vectors; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 2000. 30th European
Conference_Location
Paris, France
Type
conf
DOI
10.1109/EUMA.2000.338686
Filename
4139699
Link To Document