Title :
120-GHz-band BPSK modulator and demodulator for 10-Gbit/s data transmission
Author :
Takahashi, Hiroyuki ; Kosugi, Toshihiko ; Hirata, Akihiko ; Murata, Koichi ; Kukutsu, Naoya
Author_Institution :
NTT Microsyst. Integration Labs., Atsugi, Japan
Abstract :
This paper presents a 120-GHz band binary phase shift keying (BPSK) modulator and demodulator fabricated on microwave monolithic integrated circuits (MMICs) for a 10-Gbit/s wireless link. The direct-conversion modulator consists of a 180deg hybrid coupler, gain-control amplifiers, and Wilkinson combiner. The delay demodulator has a 100-ps delay line made of coplanar waveguides and a voltage-controlled phase shifter. The modulator MMIC exhibits a static vector error magnitude of 5%. The modulator and demodulator MMICs were mounted in WR-8 waveguide modules to evaluate the characteristics of 10-Gbit/s transmission. A bit error rate (BER) for 10-Gbit/s pseudorandom binary sequence (PRBS) 27-1 data was 10-12.
Keywords :
MIMIC; MMIC; binary sequences; demodulators; error statistics; modulators; phase shift keying; radio links; random sequences; BPSK demodulator; BPSK modulator; WR-8 waveguide modules; Wilkinson combiner; binary phase shift keying; bit error rate; bit rate 10 Gbit/s; coplanar waveguides; data transmission; delay demodulator; direct-conversion modulator; frequency 120 GHz; gain-control amplifiers; hybrid coupler; microwave monolithic integrated circuits; modulator MMIC; pseudorandom binary sequence; static vector error magnitude; voltage-controlled phase shifter; wireless link; Binary phase shift keying; Bit error rate; Coupling circuits; Data communication; Delay lines; Demodulation; MMICs; Monolithic integrated circuits; Phase modulation; Propagation delay; MMICs; Millimeter wave circuits; demodulator; modulator;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5165757
