Title :
Millimetre wave phase locked oscillator for mobile communication systems
Author :
Telliez, I. ; Camiade, M. ; Savary, P. ; Bourne-Yaonaba, P.
Author_Institution :
Semiconducteurs Specifiques, Thomson-CSF, Orsay, France
Abstract :
A 56.8 GHz phase locked oscillator has been developed for broadband pico-cell networks in the 62 to 53 and 65 to 66 GHz bands. A set of millimetre wave MMICs has been produced using a 0.25 /spl mu/m HEMT low noise process. A 10 MHz reference is used to stabilise the loop with the help of a low frequency synthesiser at 200 MHz and a sampler at 14.2 GHz. Within the temperature range 0 to 50/spl deg/C, the output signals delivered at 56.8 GHz are higher than the specified 6.5 dBm/spl plusmn/1.5 dB. The phase noise is better than -100 dBc/Hz at 1 MHz from carrier and lower than -70 dBc/Hz at 10 kHz from carrier. A 9 mm/sup 2/ multifunction chip incorporating three basic functions at 55.8 GHz has been implemented. This approach avoids critical connections and demonstrates the capability and maturity of our monolithic technology.<>
Keywords :
HEMT integrated circuits; MMIC oscillators; dielectric resonator oscillators; field effect MIMIC; microwave links; millimetre wave oscillators; mobile radio; phase locked loops; 0 to 50 C; 0.25 micron; 10 MHz; 14.2 GHz; 200 MHz; 56.8 GHz; 62 to 66 GHz; EHF; HEMT low noise process; MM-wave IC; broadband pico-cell networks; low frequency synthesiser; millimetre wave MMICs; millimetre wave oscillator; mobile communication systems; monolithic technology; multifunction chip; phase locked oscillator; phase noise; Frequency synthesizers; HEMTs; Low-frequency noise; MMICs; Mobile communication; Network synthesis; Oscillators; Phase noise; Signal synthesis; Temperature distribution;
Conference_Titel :
Microwave and Millimeter-Wave Monolithic Circuits Symposium, 1995. Digest of Papers., IEEE 1995
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2590-7
DOI :
10.1109/MCS.1995.470993
