A circularly polarised antenna for a wireless blood-flow sensor

El Atrash M.; Wang Y.

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A circularly polarised antenna for a wireless blood-flow sensor

El Atrash M.; Wang Y.

Full Text link: https://ieeexplore.ieee.org/document/7032388

Date issued: 2015

Doi: https://doi.org/10.1109/IMWS-BIO.2014.7032388 PubMed ID :

Publisher: Institute of Electrical and Electronics Engineers Inc.

Series Info: Conference Proceedings - 2014 IEEE MTT-S International Microwave Workshop Series on: RF and Wireless Technologies for Biomedical and Healthcare Applications, IMWS-Bio 2014

Type: Conference Paper

Keywords: October University for Modern Sciences and Arts , University for Modern Sciences and Arts , MSA University , جامعة أكتوبر للعلوم الحديثة والآداب , Blood-flow , circular polarisation , human tissue , microstrip patch antenna , quadrature hybrid coupler , Blood , Circular polarization , Electric connectors , Hemodynamics , Microstrip antennas , Microwave antennas , Polarization , Scattering parameters , Slot antennas , Wireless telecommunication systems , Blood flow , Circularly polarised antenna , Human tissues , Micro-strip patch antennas , Quadrature hybrid couplers , Reflected signal , Directional patterns (antenna)

Abstract:

This paper presents a circularly polarised antenna for determining the speed of blood-flow, using Doppler effects at microwave frequencies. The structure consists of a double-feed patch antenna and a quadrature hybrid coupler in order to achieve circular polarisation and to isolate the reflected signal from the incident. The design was simulated and then fabricated. Both results were compared which showed a good agreement in terms of scattering parameters and radiation patterns. 2014 IEEE.