Bilgiç, M.M. | Yegin, K.

Article | 2013 | International Journal of Distributed Sensor Networks2013

Polarization reconfigurable microstrip patch antenna is presented for 2.4-2.5 GHz wireless sensor network and WLAN applications. Dual feed degenerate mode patch is used as the starting point for circular polarization and L-shaped islands which can be connected or disconnected to the main patch via RF switches are placed around the patch. When L-shape structure is connected, the patch radiates in linear polarization modes with either vertical or horizontal polarization depending on the feed being used. When RF switches are not biased, the antenna is in circular polarization mode. Full wave simulations and measurements were carried ou . . .t to validate the design. © 2013 Mustafa Murat Bilgiç and Korkut Yegin Daha fazlası Daha az

Bilgiç, M.M. | Yegin, K.

Conference Object | 2013 | 2013 Computational Electromagnetics Workshop, CEM 2013 , pp.21 - 22

Bandwidth, gain, and HPBW are the most essential design characteristics in antenna design. Other features such as cross polarization ratio, front-to-back ratio, in-band gain ripple, electrical height, and physical dimensions also play a critical role in the design. It is difficult to define a common figure-of-merit (FOM) that includes all these metrics, but we present several FOM applicable for aperture coupled antennas. Various nonresonant and resonant slot coupled stacked patches are compared to each other to identify the best configuration. Integral equation based solver is used in the computational analysis.

Bilgiç, M.M. | Yegin, K. | Türkkan, T. | Şengiz, M.

Conference Object | 2011 | 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011 , pp.21 - 22

Ku band reception systems for mobile platforms demand stringent requirements for the electrical and mechanical characteristics of the antenna. Limitations on height and weight for a rugged antenna design require a careful phased array antenna design. We present a new phased array antenna design capable of mechanical scanning in azimuth and electronic scanning in elevation. Non-resonant slot coupled patch antenna with a parasitic element on top is designed for wideband operation, which covers entire Ku band allocated for TV reception, and high gain. Single element, then, is formed in an array to meet target design specifications. The . . . antenna has overall 31 dBi of gain when its beam is tilted to 45° elevation. Its feed network is optimized for this particular scanning angle and wideband operation. Considering the limited dimensions of the antenna, it exhibits excellent performance in terms of match, gain, and isolation among its polarization ports. © 2011 IEEE Daha fazlası Daha az

Isenlik, T. | Bilgiç, M.M. | Yegin, K. | Çiydem, M.

Conference Object | 2011 | 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011 , pp.21 - 22

Base station antenna array is designed to cover frequency range from 1710 MHz to 2170 MHz. An entirely different antenna feed structure which consists of an L-plate capacitive feed, is developed and a parasitic patch is optimized to meet target design specifications. The antenna is +/-45° dual polarization with dedicated channels for each polarization. A prototype of the antenna element is built and measured to corroborate simulation results. The antenna array for BSA is designed to have an 18 dBi system gain with a VSWR less than 1.5 over the entire frequency band. © 2011 IEEE.