A Printed Antenna Design with Defected Ground Structure for Multiband Applications

Year 2021, Issue: 28, 1528 - 1533, 30.11.2021

Maie Gaber , Faten Fouad Ashraf Yahia Mostafa El-aasser Nasr Gad

https://doi.org/10.31590/ejosat.1020955

Abstract

In this paper, the design and analysis of a printed antenna based on a defected ground structure for multiband applications is introduced. The proposed antenna consists of two rectangular slots like an inverted stair. Different five strip lengths are in the area of an inverted stair slot. Four strips are equal in width and horizontally located inside the main two rectangular slots. The fifth strip is the smallest one in the middle of the structure in the ground plane. The microstrip line exists only on the front side plane and parallels to the fifth strip. The antenna is printed on a hydrocarbon ceramic substrate with a dielectric constant of 3.55 and a size (40 × 45 × 1.524) mm3. The proposed antenna is designed by using an electromagnetic simulator based on the finite element method. To verify the suggested approach, the multiband antenna is fabricated and tested. The simulation and measurement results indicate that the antenna has good input-impedance bandwidths (S11 ≤ −10 dB) that extend in the range of 2 to 14 GHz. The six operating frequencies are (2.58, 6.03, 6.25, 7.89, 11.64, and 12.24) GHz. This antenna has good gains and high efficiencies at all resonance frequencies.

Keywords

Printed antenna, Multiband applications, Defected ground structure, Slot antenna

Çoklu Bant Uygulamaları için Bozuk Zemin Yapısına Sahip Basılı Bir Anten Tasarımı

Abstract

Bu çalışmada, çok bantlı uygulamalar için kusurlu bir zemin yapısına dayalı basılı bir antenin tasarımı ve analizi tanıtılmaktadır. Önerilen anten, ters çevrilmiş bir merdiven gibi iki dikdörtgen yuvadan oluşur. Ters çevrilmiş bir merdiven yuvası alanında farklı beş şerit uzunluğu vardır. Dört şerit eşit genişliktedir ve ana iki dikdörtgen yuvanın içine yatay olarak yerleştirilmiştir. Beşinci şerit, yer düzleminde yapının ortasındaki en küçük şerittir. Mikroşerit çizgisi yalnızca ön yan düzlemde ve beşinci şeride paralel olarak bulunur. Anten, dielektrik sabiti 3.55 ve boyutu (40 × 45 × 1.524) mm3 olan bir hidrokarbon seramik substrat üzerine basılmıştır. Önerilen anten, sonlu elemanlar yöntemine dayalı bir elektromanyetik simülatör kullanılarak tasarlanmıştır. Önerilen yaklaşımı doğrulamak için çok bantlı anten üretilmiş ve test edilmiştir. Simülasyon ve ölçüm sonuçları, antenin 2 ila 14 GHz aralığında genişleyen iyi giriş empedans bant genişliğine (S11 ≤ -10 dB) sahip olduğunu göstermektedir. Altı çalışma frekansı (2.58, 6.03, 6.25, 7.89, 11.64 ve 12.24) GHz'dir. Bu anten, tüm rezonans frekanslarında iyi kazanımlara ve yüksek verimliliğe sahiptir.

Keywords

Basılı anten, Çoklu bant uygulamaları, Arızalı zemin yapısı, Yuva anteni.

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