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Ultra-Wideband Wearable Vivaldi Antennas for Biomedical Applications
| Content Provider | Scilit |
|---|---|
| Author | Lalitha, K. |
| Copyright Year | 2021 |
| Description | Book Name: Microstrip Antenna Design for Wireless Applications |
| Abstract | This chapter presents a Vivaldi antenna for wearable applications in the field of biomedical imaging. The structure of this proposed antenna is designed on the FR4 substrate (dielectric constant = 4.3) having a thickness of 0.018 mm with a Vivaldi structure for high gain and high bandwidth applications. The antenna is designed and optimized using computer simulation software. The simulated results give an S11 value of less than −10 dB over the ultra-wideband region. The structure of this proposed antenna structure can also be employed for imaging hidden or shielded objects. This Vivaldi ultra-wideband antenna produces non-ionized radiation that makes them suitable for wearable healthcare applications. The telemedicine industry and developments in radio wave communications have been working together to provide better medical facilities to people in the remote areas at an affordable cost. Wearable antennas with smaller sizes are generally employed for the transmission of patient’s data to a medical expert through the IoT device for early diagnosis and continuous monitoring. The antenna requirement for wearable technology is quite different. In general, the wearable antenna interacts with human body to provide remote monitoring. The UWB frequency spectrum lies in the frequency range of 3.1 to 10.6 GHz, as described by the Federal Communications Commission (FCC). The UWB antennas for wearable applications should be simple and have compact design, low profile, and high-speed data transfer rate for short-range communication with low power consumption. Vivaldi antenna is the best solution for satisfying the aforementioned needs of the UWB antenna. This is a linearly polarized antenna and capable 284of providing wide bandwidth and high gain [1]. There are three types of tapered slot antennas: (i) Linearly Tapered Slot Antenna (LTSA), (ii) Vivaldi or Exponentially Tapered Slot Antenna (ETSA), and (iii) Constant Width Slot Antenna (CWSA) [2]. Amplifiers may be included to improve the dynamic range of the system. The microwave imaging is an imaging technique which has been evolved to evaluate embedded objects using an antenna or array of antennas that radiate electromagnetic waves close to the target. The reflections or backscattered arrays are analyzed to detect the presence of tumors, blood clots, stroke, and so on in various parts of the human body. The microwave spectrum band of 1–6 GHz is suggested for the human head since it offers enough penetration into the tissue and provides better resolution. A wearable microwave head imaging system is proposed with a hat-like structure using an ultra-wideband antenna array. This antenna array is designed with FR4 substrate in the frequency range of 1.5 GHz to 4 GHz [3]. Wearable antennas are designed with textile material to monitor vital signs of the patient [4]. |
| Related Links | https://api.taylorfrancis.com/content/chapters/edit/download?identifierName=doi&identifierValue=10.1201/9781003093558-26&type=chapterpdf |
| Ending Page | 289 |
| Page Count | 7 |
| Starting Page | 283 |
| DOI | 10.1201/9781003093558-26 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2021-10-26 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Microstrip Antenna Design for Wireless Applications Structure Ultra Wideband Antenna Optimized Vivaldi Frequency Range Human Body Wearable Applications |
| Content Type | Text |
| Resource Type | Chapter |
