Open AccessLow‐power low data rate FM‐UWB receiver front end
Author(s) -
Whitehall Sean E.,
Saavedra Carlos E.
Publication year - 2018
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
ISSN - 1751-8598
DOI - 10.1049/iet-cds.2017.0507
Subject(s) - amplifier , envelope detector , rf front end , signal (programming language) , cmos , electrical engineering , front and back ends , intermediate frequency , wideband , detector , radio receiver design , power (physics) , radio frequency , electronic engineering , engineering , physics , channel (broadcasting) , computer science , transmitter , mechanical engineering , quantum mechanics , programming language
This study introduces a frequency modulated ultra‐wideband (FM‐UWB) receiver optimised for low power and fast start‐up. The receiver consists of a front end amplifier converting a frequency modulated signal to an amplitude modulated signal which is applied to an envelope detector. The receiver front end is for 500 MHz channels centred at 3450 and 3950 MHz. The amplifier uses passive gain and four cascaded gain stages to achieve high radio‐frequency gain without the need for super‐regeneration. By simplifying the architecture this way, the front end has a 5 μs wake‐up time to enable efficient duty‐cycling. The measured front end receives a signal at −68 dBm while consuming 600 μW of power (excluding a test buffer) from a 1 V supply. Fabrication was done using the IBM 130‐nm CMOS technology on a 1 mm × 1 mm loose die.