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MOSFETs for RF Applications
Published in Frank Schwierz, Hei Wong, Juin J Liou, Nanometer CMOS, 2010
Frank Schwierz, Hei Wong, Juin J Liou
While around the year 2000 there was still a debate as to whether RF MOSFETs will find widespread RF applications, see, for example Ref. 1, only 5 years later RF CMOS has been considered as an attractive option for the consumer mass markets in the operating frequency range up to about 5GHz. At this time, Si MOSFETs have already been widely used in mobile communications circuits, such as transceivers for cellular phones and wireless local area networks (WLAN), and as high-power amplifiers in the base stations of mobile communications systems. Meanwhile intensive R&D work is undertaken to exploit RF MOSFETs for applications at much higher operating frequencies of up to 60 GHz.2,3 An indication of the growing importance of Si RF MOSFETs is the fact that the recent ITRS issues4 contained subsections exclusively for detailed performance targets for Si RF MOSFETs. Moreover, in the 2007 edition of the ITRS, Si nMOSFETs have been included in the class of transistors for millimeter wave applications with operating frequencies in the 10GHz to 100GHz range.
Design of 0.13 µm low power CMOS subharmonic mixer for DCR applications
Published in International Journal of Electronics Letters, 2021
S Manjula, D Selvathi, M Suganthy, P Anandan
Recently, wireless sensor networks have received wide attention in several applications such as healthcare and military applications. As the scaling down of CMOS technology continues, RF CMOS circuits can be integrated and operated for wireless applications (Steyaert et al., 1996). For 2.4 GHz applications, the radio requency integrated circuit (RFIC) requires long lifetime of battery with low cost solutions. Among the various possible architectures of receiver, direct conversion receiver (DCR) is suitable for low power, less complexity, low cost and on chip integration (Cho et al., 1999). However, DC offset, I/Q mismatch, LO leakage, flicker noise and even order distortion are the drawbacks of DCR (Abidi, 1995; Razavi, 1997). For DCR, mixer plays an important role to avoid these drawbacks.