Abstract
A transmission line model is used to design corporate-fed multilayered bow-tie antennas arrays; the simulated antennas arrays are designed to resonate at the frequencies 2.4 GHz, 5 GHz, and 8 GHz corresponding to RFID, WIFI, and radars applications. The contribution of this paper consists of modeling multilayer bow-tie antenna array fed through an aperture using transmission line model. The transmission line model is simple and precise and allows taking into account the whole geometrical, electrical, and technological characteristics of the antennas arrays. The proposed transmission line model showed its interest in the design of different multilayered bow-tie antennas and predicted the correct resonance frequency for different applications in telecommunications. To validate the proposed transmission line model, the simulation results obtained are compared with those obtained by the method of moments. The results of simulations are presented and discussed. Using this transmission line approach, the resonant frequency, input impedance, and return loss can be determined simultaneously. The paper reports several simulation results that confirm the validity of the developed model. The obtained results are then presented and discussed.
Highlights
Microstrip antenna arrays are exploited in a vast number of engineering applications due to their ease of manufacturing, low cost, low profile, and light weight [1, 2].Antenna arrays are used to scan the beam of an antenna system, increase the directivity, and perform various other functions which would be difficult with any single element
A transmission line model is used to design corporate-feed multilayer antennas arrays to resonate at the frequencies of 2.4 GHz, 5 GHz, and 8 GHz corresponding to RFID, WIFI, and radars applications, and the patches chosen as radiating elements for these arrays are in the bow-tie shape
The validity of the suggested model is highlighted by comparing the results of the return loss, the input phase, input antenna VSWR, and input impedance locus to those obtained by the moment’s method of the Momentum Software
Summary
Microstrip antenna arrays are exploited in a vast number of engineering applications due to their ease of manufacturing, low cost, low profile, and light weight [1, 2]. Elements can be fed by a single line or by multiple lines in a feed network arrangement. Based on their feeding method [3,4,5] the array is classified in seriesfeed network or corporate-feed network. It leads to performance degradation due to radiation, its constructional simplicity and low cost are still considered This method has more control of the feed of each element and is ideal for scanning phased arrays, multiband arrays. It provides better directivity as well as radiation efficiency and reduces the beam fluctuations over a band of frequencies compared to the series-feed array. The obtained simulation results are compared with those obtained by the moment’s method (MoM)
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