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Open AccessFeature PaperReview

Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review

by Carolina Gouveia 1,2,†, Caroline Loss 3,†, Pedro Pinho 1,4,*,† and José Vieira 1,2,†
Instituto de Telecomunicações, 3810-193 Aveiro, Portugal
Departamento de Eletrónica, Telecomunicações e Informática, Universidade de Aveiro, 3810-193 Aveiro, Portugal
FibEnTech Research Unit, Universidade da Beira Interior, 6200-001 Covilhã, Portugal
Departamento de Engenharia Eletrónica, Telecomunicações e de Computadores, Instituto Superior de Engenharia de Lisboa, 1959-007 Lisboa, Portugal
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Electronics 2019, 8(11), 1294;
Received: 30 September 2019 / Revised: 28 October 2019 / Accepted: 1 November 2019 / Published: 6 November 2019
Cardiopulmonary activity measured through contactless means is a hot topic within the research community. The Doppler radar is an approach often used to acquire vital signs in real time and to further estimate their rates, in a remote way and without requiring direct contact with subjects. Many solutions have been proposed in the literature, using different transceivers and operation modes. Nonetheless, all different strategies have a common goal: enhance the system efficiency, reduce the manufacturing cost, and minimize the overall size of the system. Antennas are a key component for these systems since they can influence the radar robustness directly. Therefore, antennas must be designed with care, facing several trade-offs to meet all the system requirements. In this sense, it is necessary to define the proper guidelines that need to be followed in the antenna design. In this manuscript, an extensive review on different antenna designs for non-contact vital signals measurements is presented. It is intended to point out and quantify which parameters are crucial for the optimal radar operation, for non-contact vital signs’ acquisition. View Full-Text
Keywords: antennas; radar; vital-signs; CW; UWB antennas; radar; vital-signs; CW; UWB
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Gouveia, C.; Loss, C.; Pinho, P.; Vieira, J. Different Antenna Designs for Non-Contact Vital Signs Measurement: A Review. Electronics 2019, 8, 1294.

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