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In this paper, a dual segment two element wideband cylindrical dielectric resonator antenna array with annular shaped corporate feed network is presented. To enhance impedance bandwidth, multisegmentation concept with shifted center has been pragmatic. Annular shaped microstrip parallel feed with quarter wave transformer etched on a single side of the copper grounded substrate (εr=4.4) is used to...
This paper examines a triple band cylindrical dielectric resonator antenna (CDRA) with three different radiating modes, i.e., HEM$_{\mathrm { {11\delta }}}$ , TM$_{\mathrm { {01\delta }}}$ , and HEM$_{\mathrm { {12\delta }}}$ . Excitation of all these radiating modes simultaneously, in CDRA, is the most challenging task, which have been accomplished by using composite feeding structure [combination...
In this paper, triple band cylindrical dielectric resonator antenna with a novel mirostrip line feed is examined. Triangular shaped mirostrip line generates two different modes (i.e. HE11δ and TM01δ) in CDRA at 3.20 GHz and 5.37 GHz respectively. The proposed antenna design operates in three different frequency bands i.e. 2.55–2.68 GHz; 2.96–3.59 GHz; 5.19–6.19 GHz with the fractional bandwidth of...
In this paper, tri band dual segment ring dielectric resonator antenna with partial ground plane is presented. Proposed ring shape DRA is excited by modified microstrip line. Two different modes i.e. TM01δ and HE11δ are generated in ring DRA at 3.45 GHz and 5.41 GHz respectively. The proposed design operates in three different frequency bands i.e. 2.17 – 2.46 GHz; 3.17–4 GHz; 5–6.5 GHz with the fractional...
The effect of cylindrical metallic enclosure on the resonant frequency of a suspended annular ring microstrip antenna (ARMSA) is investigated using HFSS simulation software and theoretically calculated using modal expansion cavity model and circuit theory concept. Theoretical result shows close agreement with simulated results. Variation in resonant frequency with air gap height and inner patch radius...
This paper describes the design of the log periodically scaled microstrip patch antenna. The novelty of this antenna structure is a combination of a number of patch elements to create a log periodic array with modest bandwidth. The radiating element is a square patch antenna. The input impedance of the patch is adjusted to the probe feed and matched at 50-ohm impedance.
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