Dielectric measurement approach based compact U-slot patch antenna design for X-band satellite applications

Abstract

In this study, a compact U-slot patch antenna design based on dielectric measurement approach of Flame Retardant 4 (FR4) material is presented for X band space applications. In accordance with the design method, the measured frequency dependent dielectric constant and tangent loss values of the FR4 material at X-band using the waveguide method is applied to the HFSS design tool to be used in antenna designs. Then, the functional performance of the design method on antennas is verified by comparing the simulation and measurement results of a conventional antenna design in the literature. In the light of the verified results, a new U-slot patch antenna design with lateral side slots for X-band space applications is presented with a feed line by using the proposed design method. The presented compact antenna design provides 1.77 dB gain at the center frequency (9.5 GHz) and the frequency bandwidth from 8.53 GHz to 10.63 GHz.

Keywords

• U-slot
• X-band
• Dielectric characterization

X-Bant uydu uygulamaları için dielektrik ölçüm yaklaşımı tabanlı kompakt U-yarıklı yama anten tasarımı

Öz

Bu çalışmada, X bant uzay uygulamaları için Flame Retardant 4 (FR4) malzemesinin dielektrik ölçüm yaklaşımına dayalı kompakt bir U-Yarıklı yama anten tasarımı sunulmaktadır. Tasarım yöntemine uygun olarak, anten tasarımlarında kullanılacak HFSS tasarım aracına, FR4 malzemesinin dalga kılavuzu yöntemi kullanılarak X-bantta ölçülen frekansa bağlı dielektrik sabiti ve tanjant kaybı değerleri uygulanmıştır. Daha sonra, yaklaşımın anten tasarımları üzerindeki fonksiyonel performansı, literatürdeki standart bir anten tasarımının benzetim ve ölçüm sonuçları ile kıyaslanarak doğrulanmıştır. Doğrulanan sonuçlar ışığında, önerilen tasarım yöntemi kullanılarak X-bant uzay uygulamaları için yanal yan yarıklara sahip yeni bir U-Yarıklı yama anten tasarımı, bir besleme hattı ile sunulmaktadır. Sunulan kompakt anten tasarımı ile merkez frekansta (9,5 GHz) 1,77 dB kazanç ve 8,53 GHz'den 10,63 GHz'e kadar frekans bant genişliği sağlamaktadır.

Anahtar Kelimeler

• U-Yarık
• X-Bant
• FR4
• Dielektrik Karakterizasyonu
• U-slot
• X-band
• Dielectric characterization

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