Low-profile 700 MHz conformal omni-directional antenna for commercial wireless and safety communication wearable applications.

The 700 MHz public safety spectrum is released for commercial wireless and safety communication wearable applications (CWSC-WA). However, the 700 MHz band need a larger aperture for an efficient radiation due to a larger wavelength. In this paper, we have systematically developed a novel miniature omnidirectional 700 MHz antenna for the CWSC-WA. Over 40% miniaturization is realized by truncating the ground plane and a meander line inspired radiator compared to a conventional rectangular patch antenna. The truncation of the ground plane also yields a perfect omnidirectional radiation pattern desired for the CWSCA. Considering current and future demands of wearable electronics and virtual reality, the antenna is made on a flexible substrate and conformity analysis is also performed. The prototype of the antenna is developed and simulated results are verified in planar as well as conformal configurations.