Open AccessIntegration of a novel CMOS-compatible magnetoelectric antenna with a low-noise amplifier and a tunable input matching
Author(s) -
Mehdi Nasrollahpour,
Anthony Romano,
Mohsen Zaeimbashi,
Xianfeng Liang,
Huaihao Chen,
Neville Sun,
Shadi Emam,
Marvin Onabajo,
Nian X. Sun
Publication year - 2020
Publication title -
analog integrated circuits and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 49
eISSN - 1573-1979
pISSN - 0925-1030
DOI - 10.1007/s10470-020-01721-x
Subject(s) - low noise amplifier , antenna (radio) , electronic engineering , amplifier , cmos , impedance matching , electrical engineering , noise figure , computer science , engineering , electrical impedance
A low-noise amplifier (LNA) topology with tunable input matching and noise cancellation is introduced and described in this paper, which was designed and optimized to interface with a magnetoelectric (ME) antenna in a 0.35 µm MEMS-compatible CMOS process. Compared to conventional antennas, acoustically actuated ME antennas have significantly smaller area for ease of integration. The LNA was simulated with an ME antenna model that was constructed based on antenna measurements. Input matching at the LNA-antenna interface is controlled with a circuit that varies the effective impedance of the gate inductor using a control voltage. Tunability of 455 MHz around 2.4 GHz is achieved for the optimum S11 frequency with a control voltage range of 0.3 V to 1.2 V. The proposed LNA has a noise cancelling feedback loop that improves the noise figure by 4.1 dB. The post-layout simulation results of the LNA show a 1-dB compression point of -7.4 dBm with an S 21 of 17.8 dB.