A dual band leaky wave antenna based on modified substrate integrated waveguide
| Autor: | Mohammad Hassan Neshati, Fateme Nazarzadeh |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Waveguide (electromagnetism)
Engineering business.industry Leaky wave antenna 020208 electrical & electronic engineering Astrophysics::Instrumentation and Methods for Astrophysics 020206 networking & telecommunications 02 engineering and technology Substrate (electronics) Computer Graphics and Computer-Aided Design Radio spectrum Computer Science Applications Optics Electric field Dispersion (optics) 0202 electrical engineering electronic engineering information engineering Multi-band device Electrical and Electronic Engineering Antenna (radio) business |
| Zdroj: | International Journal of RF and Microwave Computer-Aided Engineering. 27:e21134 |
| ISSN: | 1096-4290 |
| DOI: | 10.1002/mmce.21134 |
| Popis: | In this article, a new leaky wave antenna (LWA) based on modified substrate integrated waveguide (SIW) is introduced. At first, the modified SIW structure is presented and it is shown that it supports propagation of quasi-TEM with nearly uniform electric field distribution. Then, a new cell based on diagonal-shaped slots embedded on top surface of the structure is introduced and its dispersion characteristics and its different radiation regions are determined. A LWA made of 15 unit cells is designed and a prototype of the antenna is fabricated. The proposed LWA is simulated using a software package and its radiation characteristics are also measured. It is shown that a good agreement is obtained between simulated and measured results and two frequency bands are obtained. In the frequency range of 7 GHz to 8.25 GHz, it radiates in forward region with maximum gain of 11.3 dB and scan angles from 54° to end-fire. In addition, it radiates in backward region from −70° to broadside from 14 GHz up to 20 GHz with maximum gain of 16.47 dB. High gain, compactness, and wide scan angles are the advantages of the proposed LWA. |
| Databáze: | OpenAIRE |
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