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In this paper, an analysis of the Fat Patch Antenna with the extraordinary parasitic patch is described. For the numerical simulations, the Full Wave — CST Microwave Studio software is used. The element of the antenna is fed by the L-probe partially implemented in PCB. An excellent impedance matching is obtained (< −26 dB in the design frequency band 4.4–5 GHz). The radiation characteristics are...
A linear three-element slot antenna array with intentionally strong mutual coupling between the elements, a so-called connected array, is presented. By simultaneously feeding all three ports of the array, at different frequencies over an octave bandwidth and with different phases, feed-port reflection coefficients with magnitude larger than one, or negative active feed impedances, can occur. A reactive...
To help with long range coverage, minimal interference, and reduced energy requirements, recently there have been growing interest in incorporating directional antenna arrays in wireless communication networks. In this paper, we describe the challenges and opportunities in developing directional wireless communication networks and present innovative options that could facilitate this development,...
A reduced-order model for large arrays of microstrip-fed tapered slot antennas (TSAs) is presented. The currents on the antenna conductors are modeled by a relatively small number of physics-based macro-domain basis functions through a technique which is known as the characteristic basis function method (CBFM). The array is treated as a metal-only structure, while the wideband microstrip feeds are...
In this paper, development and realization of an adaptive antenna for WiMAX system are presented. Realization consists of two versions of low-cost multisector antennas for 2.6 GHz and 3.45 GHz frequency bands. Both antennas consist of four sectors radiators. The prototype antenna is designed to provide the highest possible gain for required antenna-size limitations. The radiation beam is electronically...
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