The effects of air-gap on spider radial line slot array (SRLSA) antenna for point to point application

Muhamad, Wan Asilah Wan; Rahman, Tharek Abdul; Jamlos, Mohd Faizal

doi:10.1109/iswta.2013.6688811

Cited by 7 publications

(1 citation statement)

References 9 publications

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“…To improve the gain, air gap concept is introduced. Inserting an air gap between the substrate and reflector can alleviate the electric field concentration in the lossy epoxy and effective dielectric constant of the radiating plane [9]. Thus, developing an air gap between the substrate and reflector gives better performance of antenna.…”

Section: Introductionmentioning

confidence: 99%

Nonuniform inverted‐L slot double‐sided array antenna for LTE and WLAN application

Islam

Jamlos

2015

Micro & Optical Tech Letters

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A nonuniform inverted-L Slotted double-sided array antenna for Long Term Evolution (2.6 GHz) and Wireless Local Area Network (5.8 GHz) application is presented in this article. The proposed antenna is a combination of 4 3 2 radiating element array at the both sides of the FR4 substrate where the both side array are designed reciprocally opposite to each other. It is found that double-sided array with nonuniform inverted-L slot suppresses the side lobe less than 220 dB at both frequencies. The 3-mm air gap which separates the substrate and reflector is discovered to enhance further the reflection coefficient and gain. The upper side plane with smaller inverted-L slots generates 5.8 GHz frequency and capable to achieve gain of 10.1 dB. Meanwhile 7.11 dB of gain at 2.6 GHz frequency is produced by the lower side plane with bigger inverted-L slots. The proposed antenna achieves acceptable reflection coefficient at both operated frequencies for simulation and measurement. However, the reflection coefficient at the lower frequency 2.6 GHz reaches 217.588 dB (simulated) and 215.84 dB (measured) and at the upper frequency 5.8 GHz is about 212.26 dB (simulated), 215.71 dB (measured). Good agreement is obtained between simulated and measured result for E-plane and H-plane radiation pattern at both frequencies. Figure 1 The proposed double-sided slotted antenna array (a) both side, (b) front side, (c) back side, and (d) side view. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com]

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Section: Introductionmentioning

confidence: 99%