Integration of a novel CMOS-compatible magnetoelectric antenna with a low-noise amplifier and a tunable input matching

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, acoustica...

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Bibliographic Details
Published in:Analog integrated circuits and signal processing 2020-12, Vol.105 (3), p.407-415
Main Authors: Nasrollahpour, Mehdi, Romano, Anthony, Zaeimbashi, Mohsen, Liang, Xianfeng, Chen, Huaihao, Sun, Neville, Emam, Shadi, Onabajo, Marvin, Sun, Nian Xiang
Format: Article
Language:English
Subjects:
Acoustic noise
Amplifiers
Antennas
Circuits
Circuits and Systems
CMOS
Control theory
Electric potential
Electrical Engineering
Engineering
Feedback loops
Matching
Noise
Receivers & amplifiers
Signal,Image and Speech Processing
Topology
Voltage
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Summary: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 0.3–1.2 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.
ISSN:0925-1030
1573-1979
DOI:10.1007/s10470-020-01721-x