A K-band low phase noise transformer coupled Colpitts VCO in 0.18-μm CMOS technology

Hsieh, C.-K.C.-K.HsiehKao, K.-Y.K.-Y.KaoKUN-YOU LIN2018-09-102018-09-102011http://www.scopus.com/inward/record.url?eid=2-s2.0-84860537233&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/364798A K-band low phase noise Colpitts VCO was developed in 0.18-μm CMOS technology. The modified Colpitts VCO which uses a transformer to combine the main transistors and current switch transistors is proposed to improve the output voltage swing and the phase noise. The VCO achieves a good phase noise of 115 dBc/Hz at 1 MHz offset, and the chip size is 0.35 mm 2.CMOS technologytransformerVoltage-controlled oscillatorA K-band low phase noise transformer coupled Colpitts VCO in 0.18-μm CMOS technologyconference paper2-s2.0-84860537233