http://ijamt.com/index.php/ijamt/issue/feed International Journal of Advances in Microwave Technology 2022-03-28T17:22:47+00:00 Dr. M.K. Meshram editor@ijamt.com Open Journal Systems <p>The International Journal of Advances in Microwave Technology (IJAMT) is a double blind peer-review, open access journal that publishes original research articles as well as review articles in all areas of Microwaves including microwave passive and active devices, microwave solid state devices, metamaterials, microwave antennas, microwave tubes, high power microwave sources and systems, microwave communication, wave propagation, millimeter- and sub-millimeter-wave techniques, radar engineering, radio astronomy, remote sensing and imaging applications. Specifically, the journal focuses on analysis, design, development, measurement, and testing of microwave components and devices, high power microwave sources and system, the interaction of electromagnetic waves with discrete, continuous, and biological media.</p> http://ijamt.com/index.php/ijamt/article/view/100 Four Elements Reconfigurable MIMO Antenna for Dual Band Applications 2022-01-02T08:46:52+00:00 Vipin Choudhary choudhary.vip77@gmail.com Manoj Kumar Meshram ijamt.editor@gmail.com Jan Hesselbarth jan.hesselbarth@ihf.uni-stuttgart.de <p>A four-element reconfigurable multiple-input-multiple-output (MIMO) antennas for dual band applications are proposed. The frequency reconfigurability of the proposed antennas is achieved by incorporation of three PIN diodes within the single element. The antenna covers multiple switchable operating bands for Worldwide Interoperability for Microwave Access (Wi-MAX)/Wireless Local Area Network (WLAN) applications (3.4-3.6GHz, 3.8-3.86GHz, 5.18-5.27GHz, 5.35-5.5GHz and 5.67-5.8GHz). The proposed MIMO antenna consists of 2x2 elements on a single FR4 substrate. The combinations of MIMO and reconfigurable antenna provide improved performance in terms of envelope correlation coefficient (ECC) and channel capacity loss (CCL) in multiple-frequency bands. The MIMO antenna system performance including the isolation, ECC, CCL, and the diversity gain (DG) are simulated and measured. High isolation (≥ 25dB) is achieved between reconfigurable MIMO antenna ports without any internal and external decoupling network. The proposed antenna has sufficient performance that makes it suitable for indoor access points (IAPs).</p> 2022-03-28T00:00:00+00:00 Copyright (c) 2022 Vipin Choudhary, Manoj Kumar Meshram, Jan Hesselbarth