Title :
A subharmonically pumped I/Q vector modulator MMIC for Ka band satellite communication
Author :
Philibert, W. ; Verbiest, R.
Author_Institution :
Alcatel Bell Space, Hoboken, Belgium
Abstract :
We have developed a direct linear vector modulator MMIC for Ka band satellite communication. The modulator is of the parallel I/Q type and includes on-chip phase tuning for correcting the quadrature phase error. Using the tuning possibilities, excellent modulation results are obtained. This is illustrated for QPSK operation where quasi-perfect modulation is obtained in a 20% wide RF bandwidth, completely covering the FSS (Fixed-Satellite Service) Ka band downlink frequencies as allocated by the ITU.
Keywords :
III-V semiconductors; MMIC; circuit tuning; gallium arsenide; modulators; quadrature phase shift keying; satellite communication; Fixed-Satellite Service; III-V semiconductors; ITU; Ka band satellite communication; QPSK operation; RF bandwidth; direct linear vector modulator MMIC; downlink frequencies; on-chip phase tuning; quadrature phase error; quasi-perfect modulation; subharmonically pumped I/Q vector modulator MMIC; Bandwidth; Error correction; Frequency selective surfaces; MMICs; Phase modulation; Quadrature phase shift keying; Radio frequency; Satellite communication; Tuning; Vectors;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2000. Digest of Papers. 2000 IEEE
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-6280-2
DOI :
10.1109/RFIC.2000.854444
