Abstract
The design of a narrow-band cascode CMOS inductive source-degenerated low noise amplifier (LNA) for 866 MHz UHF RFID reader is presented. Compared to other previously reported narrow-band LNA designs, in this paper the finite effect has been considered to improve the nanometric design, achieving simultaneous impedance and minimum noise matching at a very low power drain of 850 from a 0.7 V supply voltage. The LNA was fabricated using the IBM 130 nm CMOS process delivering a forward power gain () of , a reverse isolation () of , an output power reflection ( @866 MHz) of , and an input power reflection ( @866 MHz) of . It had a minimum pass-band of around 2.2 dB and a third-order input referred intercept point (IIP3) of .
Highlights
RFID is one of the fastest growing wireless communication technologies for commercial product tracking
As the low noise amplifier (LNA) is the first block in the front-end of the RFID reader which is tuned at a certain transreceiver frequency, it needs to be designed optimally to minimize the noise for the following stages and avoid the distortion of the source signal
Considerable research on CMOS LNA design in submicron technologies at 900 MHz have been reported by many authors in [1,2,3,4]
Summary
RFID (radio-frequency identification) is one of the fastest growing wireless communication technologies for commercial product tracking. To overcome design tradeoff difficulties between gain, power, noise figure (NF) and matching in the optimization of the LNA, the design of the matching circuits at the input and the output are based, respectively, on minimal NF and maximal power transfer. Low power dissipation at low supply voltage is a significant design criterion for RFID applications synthesized by design trade-off between gain, NF, input and output impedance matching and high linearity. In this paper we discuss the design and the experimental results for a 0.7 V low-power 130 nm CMOS 866 MHz single-ended commonsource telescopic cascode LNA using an enhanced power constrained simultaneous noise and impedance matching (PCSNIM [5, 6]) technique
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