Broadband inductorless vector modulator IC for localisation and communication systems. Issue 10 (1st May 2015)

• Record Type: Journal Article
• Authors: Wagner, J.; Joram, N.; Wolf, R.; Ellinger, F.
• Is Part Of: Electronics letters. Volume 51:Issue 10(2015)
• Page Start: 767
• Page End: 769
• Publication Date: 2015-05-01
• Subjects: mean square error methods -- BiCMOS integrated circuits -- modulators -- digital‐analogue conversion; broadband inductorless vector modulator IC -- communication systems -- inductorless vector modulator‐based radio frequency weighting circuit -- root mean square -- phase error -- amplitude error -- localisation diversity frontends -- industrial, scientific and medical bands -- ISM -- BiCMOS -- inter‐integrated circuit control interface -- digital‐to‐analogue converters -- DAC -- frequency 1 GHz to 10 GHz -- size 180 nm -- power 87 mW; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2015.0343
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : An inductorless vector modulator‐based radio frequency (RF) weighting circuit working from 1 to 10 GHz is presented. Amplitude and phase interdependencies were strongly reduced employing optimised attenuators. The vector modulator features a 360° phase and more than 40 dB amplitude control range with a root mean square phase and amplitude error of only 6° and 0.16 dB, respectively. These features make it a suitable candidate for communication and localisation diversity frontends in the 2.4 and the 5.9 GHz industrial, scientific and medical (ISM) bands. The circuit was fabricated in a 180 nm BiCMOS technology and contains an inter‐integrated circuit (I 2 C) control interface and digital‐to‐analogue converters. It consumes 87 mW and requires an area of only ≃0.2 mm 2 .