Radiating antenna near/far field distribution and region boundaries

Haridim, M.; Tsaliovich, Anatoly; Gavan, J.; Razban, Tchanguiz

doi:10.1109/cama.2016.7815748

Cited by 2 publications

(1 citation statement)

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“…Non-radiative 'near field' behaviors of electromagnetic fields dominate close to the antenna or scattering object. The importance of near-field ingredient depends on many factors including the antenna size and configuration, distance from the antenna, operating frequency and surrounding media characteristics [24]. Figure 9 shows the near-field distribution of the proposed IFA on conducting plane, parasitic element (Lp), main horizontal elements (L and L1), vertical element and the coaxial cable (vertical and horizontal elements).…”

Section: The Performances Of Ifamentioning

confidence: 99%

Examination of Multiband IFA for UHF and SHF Channel Applications

E¹,

Amalia²,

Siradjuddin³

et al. 2018

Preprint

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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).

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Section: The Performances Of Ifamentioning

confidence: 99%