Preprint Article Version 1 This version is not peer-reviewed

Examination of Multiband IFA for UHF and SHF Channel Applications

Version 1 : Received: 3 April 2018 / Approved: 3 April 2018 / Online: 3 April 2018 (15:56:01 CEST)

How to cite: Rohadi, E.; Amalia, A.; Siradjuddin, I..; Ronilaya, F..; Asmara, R.A.. Examination of Multiband IFA for UHF and SHF Channel Applications. Preprints 2018, 2018040039 (doi: 10.20944/preprints201804.0039.v1). Rohadi, E.; Amalia, A.; Siradjuddin, I..; Ronilaya, F..; Asmara, R.A.. Examination of Multiband IFA for UHF and SHF Channel Applications. Preprints 2018, 2018040039 (doi: 10.20944/preprints201804.0039.v1).

Abstract

The Inverted F Antenna (IFA) with the parasitic element on a finite conducting plane is proposed in the range frequency of 0.1 to 5.5 GHz and its characteristics are analyzed numerically. In this research, the parasitic element and the main IFA are investigated to obtain the resonance frequency for multiband operation purposes. The parasitic element is placed beneath adjusted to the main IFA to derive more frequency bands. The distance between the parasitic element and main horizontal element extremely affects the performance of the IFA. It is found that when the parasitic element is located closer to the conducting plane, this element is coupled by the current on the conducting plane. Consequently, the return loss bandwidth becomes narrower. Therefore, the gain of the proposed IFA becomes a bit higher. The antenna gain is about 8.21 dB at band #3 (λ1.747), 7.43 dB at band #5 (λ2.967) and 8.82 dB at band #6 (λ4.023). This occurs when the calculation condition is antenna height h1 = 23 mm, h2 = 21 mm, horizontal antenna elements L = 173.2 mm, L1 = 140.9 mm and Lp = 152 mm, shorted element Ls = 30.7 mm, the distance between parasitic element and shorted element pyl = 5 mm. While the size of conducting plane is considered pxp+pxm by pyp+pym as 57.5+57.5 mm by 200+50 mm. In the numerical analysis, the electromagnetic simulator WIPL-D based on Method of Moment is used. The results show that the proposed IFA has UHF and SHF channel receiver which are suitable for advanced wireless service (band #3), mobile phones, Bluetooth, maritime service, radiolocation service (band #5) and radars, mobile phones, commercial wireless LAN (band #6).

Subject Areas

inverted F antenna; near field; radiation pattern; parasitic element; multiband

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