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A 20 GHz Low Phase Noise Signal Source Using VCO and Mixer in InGaP/GaAs HBT

Sz-Hau Lai (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum) ; Mingquan Bao (GigaHertz Centrum) ; Dan Kuylenstierna (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum) ; Herbert Zirath (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik ; GigaHertz Centrum)
2012 IEEE Compound Semiconductor Integrated Circuit Symposium, CSICS 2012, La Jolla, CA, 14 - 17 October 2012 (1550-8781). p. Art. no. 6340056. (2012)
[Konferensbidrag, refereegranskat]

This paper presents a low phase noise 20 GHz signal source based on a voltage control oscillator(VCO) and a mixer integrated on a single MMIC. The mixer generates a third harmonic output by mixing the fundamental and the second harmonic signals of the VCO. Using a relatively low frequency VCO has the advantage of better Q factor and thus better phase noise. The MMIC-signal source is designed in a GaAs-InGaP HBT process. The VCO uses balanced Colpitts topology and the mixer is a high conversion-gain single-balanced mixer. The MMIC delivers signals in the frequency range 19.4-21.2 GHz with an excellent phase noise of -100 to -93 dBc/Hz at 100kHz offset frequency. The output power ranges between -8 and -1 dBm.

Nyckelord: InGaP HBT, mixer, third harmonic, VCO



Denna post skapades 2012-12-12. Senast ändrad 2016-07-13.
CPL Pubid: 167613

 

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