Wearable Disc-Like Antenna for Body-Centric Communications at 61 GHz

Abstract

In this paper, we describe the design and simulation of on-body antenna for wireless body area network (WBAN) communication operating in the 61 GHz ISM frequency band. We developed a disc-like concept of an antenna. Instead of a direct connection between a circular disc and a feeding pin, the electromagnetic coupling is used. This concept enables us to obtain relatively broadband characteristics with omnidirectional radiation pattern and vertical polarization suitable for on-body communication. Impedance properties and radiation of the antenna were studied in open space and on a tissue-equivalent phantom representing the human body. Fabricated prototype is well matched from 59.3 GHz to 63.4 GHz. The bandwidth of the antenna is about 7%. Antenna analyzed close to body tissue exhibits efficiency at least 25 % and the maximum gain 5.2 dB in horizontal plane. Index Terms-Disc-like antenna, wearable antenna, body area network, body-centric communication, 61 GHz ISM band.

A Low Profile Antenna for Millimeter-Wave Body-Centric Applications

“…Most importantly, the proposed design works excellently in body-mounted configurations. Though, the gain and efficiency values in off-body (fee space) conditions are not the highest, they are greater than [21]- [23] and [25]. This comparison clearly shows the advantages of the proposed antenna for wearable applications at 60 GHz.…”

“…A Yagi-Uda antenna printed on a fabric substrate having a permittivity of 1.5 is discussed by Chahat et al [20]. A disc-like antenna having an electromagnetic coupling between a circular disc and the feeding pin is presented in [21]. This antenna is using substrate integrated horn for the feeding.…”

Various Textiles-Based Comparative Analysis of a Millimeter Wave Miniaturized Novel Antenna Design for Body-Centric Communications

“…However, in [13][14][15], the authors presented 60 GHz antennas that are not designed on textile substrates. In addition, there are very few mm-wave antenna designs presented in [16][17][18][19]. In [15], a 60 GHz body-centric antenna is designed for on-body operation.…”

“…As a result, the antenna produced a slightly lower bandwidth but a higher maximum gain. Puskley et al designed a disc-like low-profile antenna that is well matched between 59.3 and 63.4 GHz [16]. e antenna lost about 25% efficiency when kept 1 mm away from a 5 mm thick skin phantom.…”

Performance Enhancement of Microstrip UWB Patch Antenna with SRR for Wireless Body Area Networks

“…Disc-Like Antenna [3] for Body-Centric Communication operating at 61 GHz, with a size of (5x200x200) mm 3 is depicted by Jan Puskely et al, that was not comfortable to wear due to its size, had lower efficiency of 25% and gain of 5.2dB.The slotted patch antenna [4] operating in Ultra Wide Band (UWB) frequency band was portrayed. It offered a bandwidth of more than 2GHz and reflection coefficient of less than -10dB.…”