X ve Ku Bandı İçin Dikdörtgen Ve Simetrik L-Şekilli Yarıklara Sahip Çoklu Bant Yama Antenlerde Malzeme Etkileri

Abstract

Bu çalışmada içeriden beslemeli X bandında çalışan yeni bir dikdörtgen yama anten yapısı önerilmiştir. Üzerinde yapılan tasarım işlemleri ile antenin, tek bantta çalışan geleneksel mikroşerit yama antenden X bandı ve Ku bandında çalışan bir çoklu frekans antene dönüştürülmesi anlatılmıştır. Önerilen yapı dielektrik sabiti 2,2 olan RT5880 ve dielektrik sabiti 4,3 olan FR4 alt tabakalar üzerinde tasarlanmış ve farklı malzemelerde tasarımın geçerliliği gösterilmiştir. Ayrıca önerilen yapının farklı malzemeler için nasıl cevap verdiği araştırılmış, FR4 malzemesi için 8 GHz bandında 183 MHz’lik bir band genişliği artışına ilaveten daha yüksek frekans bölgelerinde ek rezonanslar ile uyarıldığı görülürken, RT5880 malzemesi için ise sadece 8 GHz bandına ek rezonansların uyarıldığı bulunmuş fakat bütün frekans bölgesi için anten kazancı bakımından daha kararlı bir çalışma sergilediği sonucuna varılmıştır. Yeni anten modeli FR4 tabanı ile tasarlandığında 8,52 GHz, 11,42 GHz ve 13,44 GHz frekanslarında rezonansa sahipken RT5880 tabanı ile tasarım yapıldığında rezonansların 8,51 GHz, 10,53 GHz ve 11,57 GHz frekanslarında sadece X bandında kaldığı görülmüştür. Ayrıca bu çalışma frekansları için anten kazançları FR4 tabanı için 8,52 GHz’de 7,16 dBi, 11,42 GHz’de 3,70 dBi ve 13,44 GHz’de 7,09 dBi; RT5880 tabanı için 8,51 GHz’de 8,07 dBi, 10,53 GHz’de 7,55 dBi ve 11,57 GHz’de 7,38 dBi olarak bulunmuştur.

Keywords

• Çoklu bant çalışma
• Ku bandı
• L-şekilli yarıklar
• mikroşerit yama antenler
• X bandı

Material Effects for Multiband Patch Antennas With Rectangular and Symmetrical L-Shaped Slots For X And Ku Bands

Abstract

In this study, a new inset fed rectangular patch antenna structure operating at X and Ku bands is proposed. Conversion from a conventional microstrip patch antenna operating in a single band to a multi-frequency antenna operating in X band and Ku band is explained with the design processes on it. The proposed structure is designed on RT5880 with a dielectric constant of 2.2 and FR4 with a dielectric constant of 4.3. So it is achieved to demonstrate the validity of the design in different materials. For the FR4 material, in addition to a bandwidth increase of 183 MHz in the 8 GHz band, additional resonances are induced in the higher frequency regions. For the RT5880 material, it is found that only additional resonances are excited in the 8 GHz band, but it is concluded that it has showed a more stable operation in terms of antenna gain for the whole frequency region. The new antenna model which is designed with the FR4 dielectric has resonances at 8.52 GHz, 11.42 GHz and 13.44 GHz frequencies and the antenna with the RT5880 dielectric has resonances only within the X range at 8.51 GHz, 10.53 GHz and 11.57 GHz. In addition, antenna gains for these operating frequencies are 7.16 dBi at 8.52 GHz, 3.70 dBi at 11.42 GHz and 7.09 dBi at 13.44 GHz for the FR4 dielectric; for the RT5880 dielectric, it is found to be 8.07 dBi at 8.51 GHz, 7.55 dBi at 10.53 GHz, and 7.38 dBi at 11.57 GHz.

Keywords

• Multiband operation
• Ku band
• L-shaped slots
• microstrip patch antennas
• X band

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