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In this paper the performance of TM21 resonance-mode circular patch antennas embroidered with different stitching patterns is discussed and compared. The goal is to investigate the difference in the performance when the antenna is embroidered with stitches following the antenna current paths as opposed to some simple patterns such as horizontal and vertical ones. This creates an alternative solution...
In this paper a novel design of an UE (User Equipment) antenna for the 60-GHz band is presented. The antenna was realized on LTCC A6M-E substrate to ease a later integration with the RF-chipset on a single module. To satisfy the requirement of a relative bandwidth of 15 % an electrically thick substrate was utilized, which unfortunately leads to an undesired excitation of surface waves. A suppression...
This study presents the design of a dual-band cavity-backed phased array antenna with wide-angle scanning capability in K/Ka bands for the geostationary (GSO)-fixed satellite service (FSS). To reduce the losses and mutual coupling, a novel antenna element similar to the cavity-backed Strip-Slot-Air-Inverted-Patch (SSAIP) is proposed as an element of designed array of 81 elements. Wide-angle scanning...
This paper addresses the effects of two main microstrip wearable antennas on the specific absorption rate (SAR) on the human trunk as well as their impact performance in terms of gain, efficiency and required area. Rectangular patch and PIFA jeans wearable antennas intended for wireless body area network applications at 2.45 GHz are under analysis. The SAR values averaged over 1 g and 10 g tissue...
This paper presents an approach that combines two methods for reducing the size of a patch antenna and obtaining a wide tunability frequency range. The addition of a slot in the ground plan helps to shift down the basic frequency of the patch from 7.273 GHz to 4.267 GHz without modifying the basic geometry of the antenna. By modifying the varactor values, a series of successive bands are obtained,...
This paper proposes a low-profile patch antenna with pattern diversity, by combining an annular ring together with a center-fed circular patch. The dual-band operation is realized by loading a type of planar metamaterial, i.e. a composite right/left-handed transmission line (CRLH-TL) on the patch. The outer ring and inner circular patch can provide broadside and omnidirectional radiation patterns,...
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