Abstract
The incompatibility between current RFID standards has led to the need for universal and Wi-Fi compatible RFID for IoT applications. Such a universal RFID requires an SPDT and an LNA to direct and amplify the received raw signal by the antenna. The SPDT suffers from low isolation, high insertion loss and low power handling capacity whereas the LNA suffers from bulky die area, lesser Q factor, limited tuning flexibility etc. because of passive inductor usage in current generation of devices. In this research, nano-CMOS inductorless SPDT and LNA designs are proposed. The SPDT adopts a series-shunt topology along with parallel resonant circuits and resistive body floating in order to achieve improved insertion loss and isolation performance whereas the LNA design is implemented with the gyrator concept in which the frequency selective tank circuit is formed with an active inductor accompanied by the buffer circuits. The post-layout simulation results, utilizing 90nm CMOS process of cadence virtuoso, exhibit that our SPDT design accomplishes 0.83dB insertion loss, a 45.3dB isolation, and a 11.3dBm power-handling capacity whereas the LNA achieves a peak gain of 33dB, bandwidth of 30MHz and NF of 6.6dB at 2.45GHz center frequency. Both the SPDT and LNA have very compact layout which are 0.003mm 2 and 127.7 μm 2 , respectively. Such SPDT and LNA design will boost the widespread adaptation of Wi-Fi-compatible IoT RFID technology.
Highlights
The widespread usage of smartphones and smart sensors today has transformed the network into a connected web of smart devices and intelligent services which introduces the concept of internet of things (IoT)
Such single pole double throw (SPDT) and low noise amplifier (LNA) design will boost the widespread adaptation of wireless fidelity (Wi-Fi)-compatible IoT radio frequency identification (RFID) technology
In the Monte-Carlo analysis for 50 samples, as illustrated in Fig. 9, the insertion loss was found between 0.88 dB and 0.82 dB, while the isolation was between 44.0 dB and 45.5 dB
Summary
RFID is currently a very reliable wireless communication standard that stores and remotely retrieves the information. RFID has a great potential to be used as IoT devices for many useful applications. The technology comprises of mainly transponders and readers. The transponders store information about its identification along with some additional information which is, generally, transferred to the reader on request. In RFID communication, a reader receives data from transponders wirelessly in High Frequency to microwave frequency band which is decided by the nature of the application. Among all concurrent identification technologies, RFID exhibits many advantages. RFID technology is being deployed for many commercial and home applications since few decades and is anticipated to be available for more advanced applications in near future. The continuous downscaling of CMOS technology made it easy for the radio frequency integrated circuits (RFIC) designers to fabricate fully integrated, low-power and compact RFID [1,2]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Informacije MIDEM - Journal of Microelectronics, Electronic Components and Materials
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
