Title :
20 MHz carrier frequency AM receiver in flexible a-IGZO TFT technology with textile antennas
Author :
K. Ishida;R. Shabanpour;T. Meister;B. K. Boroujeni;C. Carta;F. Ellinger;L. Petti;N. M?nzenrieder;G. A. Salvatore;G. Tr?ster
Author_Institution :
Technische Universit?t Dresden Dresden, Germany
Abstract :
This paper presents an AM receiver implemented in a flexible a-IGZO TFT technology. The circuit consists of a four-stage cascode amplifier at the RF input, a detector based on a source follower, and a common-source circuit for the baseband amplification. The measured conversion gain is very flat against frequency and exceeds 15 dB for carrier frequencies ranging from 2 to 20 MHz, which covers a relevant portion of the shortwave radio band. The 3 dB-bandwidth of the baseband signal ranges from 400 Hz to 10 kHz: this is comparable to the so-called voice band and is suitable to low-rate data communications. Additionally, the AM receiver is tested in combination with two textile antennas. The flexible a-IGZO receiver successfully detected the baseband signal through the textile antennas, demonstrating for the first time wireless transmission for this class of technologies.
Keywords :
"Thin film transistors","Receiving antennas","Gain","Baseband","Frequency measurement","Antenna measurements"
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2015 IEEE International Symposium on
DOI :
10.1109/RFIT.2015.7377914