Analysis of Device Mismatches Effect on the Performance of UWB Receiver Front-End in Wireless Body Area Network Sensor Nodes

Dublin Core

Title

Analysis of Device Mismatches Effect on the Performance of UWB Receiver Front-End in Wireless Body Area Network Sensor Nodes

Subject

WBAN UWB receiver, LNA, Passive mixer, Transistor Mismatch; Monte carlo

Description

Today it is important to manufacture high quality integrated circuits which are insensitive to device mismatches. This paper presents an analysis of MOSFET transistors mismatches effect on the performance of UWB receiver front-end which constitute the most important part of Wireless Body Area Network sensor node. The receiver is based on Balun LNA with 25% fully differential double-balanced passive mixer. A PMOS and NMOS transistors mismatch models were proposed to determine LNA output offset voltage and mixer offset current respectively. The analysis result suggests that, to minimize NMOS current mismatch, and thus reducing second-order inter modulation distortion, the overdrive voltage  must be maximized. A Monte Carlo and harmonic balance simulations were performed using 0.18µm CMOS process to evaluate the impact of mismatch as well as Vth mismatch on the receiver gain and IIP2. Simulation results show that IIP2 of the receiver is less sensitive to mixer NMOS mismatch but receiver gain is more sensitive. The receiver IIP2 confidence interval in case of NMOS  mismatch is [24.674, 24.77]dBm and in case of NMOS Vth mismatch is [24.659, 24.857]dBm. This show the robustness of the proposed UWB receiver front end. Therefore the proposed circuit meets the requirement of UWB system perfectly which make it suitable for WBAN applications.

Creator

Thaar A.Kareem
Saif Benali
Hatem Trabelsi

Source

International Journal of Interactive Mobile Technologies (iJIM); Vol. 17 No. 06 (2023); pp. 180-196
1865-7923

Publisher

International Association of Online Engineering (IAOE), Vienna, Austria

Date

2023-03-21

Rights

Copyright (c) 2023 Haider TH.Salim ALRikabi, Thaar A.Kareem, Saif Benali, Hatem Trabelsi
https://creativecommons.org/licenses/by/4.0

Relation

Format

application/pdf

Language

eng

Type

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article

Identifier

Citation

Thaar A.Kareem, Saif Benali and Hatem Trabelsi, Analysis of Device Mismatches Effect on the Performance of UWB Receiver Front-End in Wireless Body Area Network Sensor Nodes, International Association of Online Engineering (IAOE), Vienna, Austria, 2023, accessed November 5, 2024, https://igi.indrastra.com/items/show/2538

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