Title :
High Carrier Rejection for a 3.7 to 4.2 GHz BPSK Modulator
Author :
Larroque, J. ; Sombrin, J. ; Lapierre, L. ; Sautereau, J.F.
Author_Institution :
UNIVERSITE PAUL SABATIER - CNES, TOULOUSE
Abstract :
This paper presents the performances of a 3.87 GHz balanced modulator, which is used for a fourphase remodulation demodulator. This modulator uses planar technology with slotlines and microstrip lines engraved on an Epsilam-type substrate, and two beam-lead Schottky diodes. Under modulation up to 50 MHz, carrier and even harmonic rejection of better than 50 dB is obtained, with transmission losses lower than 2 dB. In direct application of this study, 2 GHz BPSK modulators have been produced.
Keywords :
Binary phase shift keying; Data processing; Erbium; Frequency shift keying; Microstrip; Optical modulation; Phase modulation; Schottky diodes; Signal processing; Slotline;
Conference_Titel :
Microwave Conference, 1987. 17th European
Conference_Location :
Rome, Italy
DOI :
10.1109/EUMA.1987.333704
