TWO STAGE ON OFF KEYING CLASS A RF POWER AMPLIFIER IN 0.18μm CMOS TECHNOLOGY

P.M. Senadeera; Zhijian Xie; Numan S. Dogan

doi:10.29121/granthaalayah.v8.i11.2020.2067

Authors

Dr. P.M. Senadeera Department of Electronics, Faculty of Applied Sciences, Wayamba University of Sri Lanka, Sri Lanka
Dr. Zhijian Xie Department of Electrical & Computer Engineering, North Carolina Agricultural and Technical State University, USA https://orcid.org/0000-0002-3842-375X
Dr. Numan S. Dogan Department of Electrical & Computer Engineering, North Carolina Agricultural and Technical State University, USA

DOI:

https://doi.org/10.29121/granthaalayah.v8.i11.2020.2067

Keywords:

Power Amplifier, CMOS, RFID, OOK Modulator

Abstract [English]

A novel architecture for the On Off Keying (OOK) modulator with high gain and high data rate power amplifier (PA) operating at 11.6 GHz IBM 0.18-µm RF CMOS technology is presented for a X-band passive RFID tag. Currently used low frequency switching techniques such as multiplexers were not functioning in the high frequency X-band architectures. In this novel approach OOK modulator with power amplifier, a CMOS switch was used to transmit ‘1’ and ‘0’ coming from the digital signal unlike in the existing low frequency architectures. Both the load and driver in this proposed PA were class A operation supplied by a single ended 1.83V source. The important design considerations include output power, 1 dB compression point and linearity. The fabricated results of the amplifier have a 1 dB compression point of 1.2 dBm and input power of 5.19 dBm at 9.2 GHz.

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