A wearable type embroidered logo antenna at ISM band for military applications

Abstract

In this article, a novel microstrip patch textile antenna is to be designed for wearable applications. The designed antenna has the design parameters of the size is 90 × 70 × 1.57 mm3 and the substrate is Jeans cloth whose dielectric constant is 1.6. The proposed antenna can be operating the resonant frequency at 2.45 GHz with a return loss of −20 dB. The proposed antenna has a gain of 2 dBi and VSWR is around 1.4 at the resonating frequency. This proposed novel antenna can be used in military jackets, because of its merits like compatibility, more flexible in designs and shape, excellent performance at different bending angles, human safety, miniaturization, power consumption etc.

Flexible Antennas: A Review

“…In the UHF spectrum, antennas for smart cards and RFID tags dominate. Flexible RFID tags for non-invasive sensor applications like patient tracking in the medical system, internet of things (IoT) devices, childcare centers, humidity, and temperature sensing have been reported [ 133 , 134 , 135 , 136 ].…”

Wearable Triband E-Shaped Dipole Antenna with Low SAR for IoT Applications

“…Cuff button antennas and modular textile snap-on button antennas have also been reported in the literature [9][10][11]. For wearable textile antennas utilising substrates with a low dielectric constant, the surface wave losses are reduced and impedance bandwidth is expanded [12][13][14].…”

Low-Profile and Closely Spaced Four-Element MIMO Antenna for Wireless Body Area Networks

“…To claim the novelty or/and advantages of the present work, a comparison table of previous similar published antennas has been included. By reviewing all ISM 2.4 GHz band MIMO antennas in Table 1, one can observe that the proposed antenna has achieved a smaller size compared to all works in [32][33][34][35][36][37][38], higher isolation in contrast to antennas in [32,33,37], improved ECC with comparison to refs [30,35], and better power gains over the designs in [33,36,38]. Moreover, the proposed antenna has been embedded on the body and its performance compared with free space antennas.…”

“…Thus, several investigations on the wearable antenna designs have been carried out. These include different kinds of antenna shapes and structures [19][20][21][22][23][24][25][26][27][28][29][30], such as conformal dipole and monopole antennas [19,20], wideband implantable antennas [21,22], circularly polarized antennas [23,24], and capsule antennas [25,26]. The main goal of such investigations was to meet wearable antenna requirements in accomplishing robust communication ability for wearable devices to detect major vital signs and bio-electric activity.…”

“…On the other hand, most wearable antennas in [19][20][21][22][23][24][25][26][27][28][29][30] are single-input-single-output (SISO) designs. Once their structure and characteristics are accomplished, size dimensions as well as bandwidth are static.…”