GaAs / Si MMICs Synthesized Upconverter for Broadband Tuners in Optical-Fiber CATV Systems

Author

Ohira, T. ; Hirota, T. ; Hiraoka, T. ; Nakagawa, T. ; Aikawa, M. ; Suto, K. ; Kokubun, T. ; Yoneda, E.

Author_Institution

NTT Radio Communication Systems Laboratories., 1-2356 Take, Yokosuka, 238-03 Japan.

Volume

1

fYear

1991

fDate

9-12 Sept. 1991

Firstpage

473

Lastpage

478

Abstract

A novel frequency-synthesized upconverter has been developed by implementing GaAs and Si MMICs, and applied to ultra broadband FM-FDM video tuners. The upconverter includes 3 chips of GaAs MMICs: a dual-output voltage controlled oscillator (VCO), an interstage amplifier and a balanced mixer, as well as 2 chips of Si MMICs: a high speed prescaler and a frequency counter. The measured phase noise is Â¿80 dBc/Hz at 1 kHz offset and two-tone intermodulation intercept is +3 dBm. Implementing this upconverter into an FM video tuner, successful performance has been obtained as tuning bandwidth broader than 2 GHz and video weighted S/N ratio of +55 dB. This will possibly be the key device in future video distribution systems through optical fiber networks.

Keywords

Broadband amplifiers; Control system synthesis; Frequency; Gallium arsenide; High speed optical techniques; MMICs; Optical amplifiers; Stimulated emission; Tuners; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 1991. 21st European

Conference_Location

Stuttgart, Germany

Type

conf

DOI

10.1109/EUMA.1991.336347

Filename

4136331