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    Design of a Multiband RF Slotted-Antenna for Biosensing Applications

    George, Jeena, Uko, Mfonobong, Ekpo, Sunday ORCID logoORCID: https://orcid.org/0000-0001-9219-3759, Ijaz, Muhammad ORCID logoORCID: https://orcid.org/0000-0002-0050-9435, Kharel, Rupak ORCID logoORCID: https://orcid.org/0000-0002-8632-7439, Wang, Qiuyu ORCID logoORCID: https://orcid.org/0000-0001-8571-5715 and Ji, Helen ORCID logoORCID: https://orcid.org/0000-0001-7955-2999 (2020) Design of a Multiband RF Slotted-Antenna for Biosensing Applications. In: 12th IEEE/IET International Symposium on Communication Systems, Networks and Digital Signal Processing Conference, 20 July 2020 - 22 July 2020, Porto, Portugal.

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    Abstract

    There is an expanding demand for adaptive contactless label-free biosensors for point-of-care, multi-user, health risk-free applications. This paper introduces the design of an elliptically-slotted patch antenna (ESPA) for bio-sensing applications. The resonance frequency difference of the ESPA is 2.5% compared with the basic slot-less patch antenna of 6.6%. Hence, the proposed model compares with the conventional slot-less patch antenna and exhibited a vast improvement in its bandwidth efficiency by over 62%. The simulated ESPA design yields a total gain of 7.5 dBi and can be utilized for simultaneous bio-sample detection and signal transmission applications. The miniaturized size of this system promises a portable label-free, reliable, realtime detection with a cost-effective fabrication.

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