Dual-band Frequency Selective Surface Design for GSM Shielding Applications

Döken, Bora; Koç, İhsan Güney; Koç, Ali Berkay; Altan, Mikail

Dual-band Frequency Selective Surface Design for GSM Shielding Applications

Bora DÖKEN, (İstanbul Teknik Üniversitesi, Elektronik ve Haberleşme Mühendisliği Bölümü, İstanbul, Türkiye)

İhsan Güney KOÇ, (İstanbul Teknik Üniversitesi, Elektronik ve Haberleşme Mühendisliği Bölümü, İstanbul, Türkiye)

Ali Berkay KOÇ, (İstanbul Teknik Üniversitesi, Elektronik ve Haberleşme Mühendisliği Bölümü, İstanbul, Türkiye)

Mikail ALTAN (İstanbul Teknik Üniversitesi, Elektronik ve Haberleşme Mühendisliği Bölümü, İstanbul, Türkiye)

Havacılık ve Uzay Teknolojileri Dergisi

24 3

Yıl: 2021 Cilt: 14 Sayı: 1 Sayfa Aralığı: 1 - 7 Metin Dili: İngilizce İndeks Tarihi: 25-01-2022

Dual-band Frequency Selective Surface Design for GSM Shielding Applications

Öz:

Global Mobile Communications (GSMs) systems have been developed very rapidly over the past decades. Mobile phone base stations are located almost everywhere nowadays. However, there is a deep concern about the health associated risks of electromagnetic radiation of GSM signals. Unwanted interference between GSM systems and electronic devices is another important issue to be considered. Transforming building surfaces to frequency selective filters is an efficient solution approach to decrease RF exposure levels inside the buildings and to prevent unwanted interference. As a solution approach, single- layer frequency selective surface (FSS) geometry is proposed in this work, which reflects 900 MHz, 1800 MHz and 2100 MHz GSM frequency bands. 1800 MHz and 2100 MHz GSM bands are considered as a single frequency band in this work since they are very close to each other. Ansoft HFSS software is used for simulation, design, and optimization purposes. The equivalent circuit model is also utilized at the design and optimization stages. Achieved results show that proposed FSS element geometry has a stable frequency response up to 60 degrees of incidence angle with minimum of 10 dB attenuation.

Anahtar Kelime:

GSM Frekans Bantlarının Kalkanlama Uygulamaları için Çift Bantlı Frekans Seçici Yüzey Tasarımı

Öz:

Global Mobil İletişim (GSM) sistemleri son yıllarda çok hızlı bir şekilde gelişmiştir. Baz istasyonları günümüzde hemen hemen her yerde bulunmaktadır. Cep telefonları ve baz istasyonlarından yayılan elektromanyetik radyasyonun sağlığa olan olumsuz etkileri önemli bir tartışma konusudur. GSM sistemlerinden kaynaklanan istenmeyen girişim dikkate alınması gereken bir diğer önemli konudur. Bina yüzeylerinin frekans seçici filtrelere dönüştürülmesi, bina içindeki GSM sinyal seviyelerini azaltmak ve istenmeyen girişim etkilerinden korunmak açısından önemli bir çözüm yaklaşımıdır. Bu çalışmada, 900 MHz, 1800 MHz ve 2100 MHz GSM frekans bantlarını yansıtan tek katmanlı frekans seçici yüzey (FSS) tasarımı anlatılmaktadır. 1800 MHz ve 2100 MHz GSM bantları birbirlerine çok yakın olmaları sebebi ile tek bir frekans bandı olarak ele alınmıştır. Ansoft HFSS programı ve eşdeğer devre modelinden tasarımların benzetim ve eniyileme aşamalarında yararlanılmıştır. Elde edilen sonuçlar, önerilen FSS geometrisinin minimum 10 dB zayıflama ile 60 derecelik bir geliş açısına kadar kararlı bir frekans cevabına sahip olduğunu göstermektedir.

Anahtar Kelime:

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Döken B, Koç İ, Koç A, Altan M (2021). Dual-band Frequency Selective Surface Design for GSM Shielding Applications. , 1 - 7.
Chicago	Döken Bora,Koç İhsan Güney,Koç Ali Berkay,Altan Mikail Dual-band Frequency Selective Surface Design for GSM Shielding Applications. (2021): 1 - 7.
MLA	Döken Bora,Koç İhsan Güney,Koç Ali Berkay,Altan Mikail Dual-band Frequency Selective Surface Design for GSM Shielding Applications. , 2021, ss.1 - 7.
AMA	Döken B,Koç İ,Koç A,Altan M Dual-band Frequency Selective Surface Design for GSM Shielding Applications. . 2021; 1 - 7.
Vancouver	Döken B,Koç İ,Koç A,Altan M Dual-band Frequency Selective Surface Design for GSM Shielding Applications. . 2021; 1 - 7.
IEEE	Döken B,Koç İ,Koç A,Altan M "Dual-band Frequency Selective Surface Design for GSM Shielding Applications." , ss.1 - 7, 2021.
ISNAD	Döken, Bora vd. "Dual-band Frequency Selective Surface Design for GSM Shielding Applications". (2021), 1-7.

APA	Döken B, Koç İ, Koç A, Altan M (2021). Dual-band Frequency Selective Surface Design for GSM Shielding Applications. Havacılık ve Uzay Teknolojileri Dergisi, 14(1), 1 - 7.
Chicago	Döken Bora,Koç İhsan Güney,Koç Ali Berkay,Altan Mikail Dual-band Frequency Selective Surface Design for GSM Shielding Applications. Havacılık ve Uzay Teknolojileri Dergisi 14, no.1 (2021): 1 - 7.
MLA	Döken Bora,Koç İhsan Güney,Koç Ali Berkay,Altan Mikail Dual-band Frequency Selective Surface Design for GSM Shielding Applications. Havacılık ve Uzay Teknolojileri Dergisi, vol.14, no.1, 2021, ss.1 - 7.
AMA	Döken B,Koç İ,Koç A,Altan M Dual-band Frequency Selective Surface Design for GSM Shielding Applications. Havacılık ve Uzay Teknolojileri Dergisi. 2021; 14(1): 1 - 7.
Vancouver	Döken B,Koç İ,Koç A,Altan M Dual-band Frequency Selective Surface Design for GSM Shielding Applications. Havacılık ve Uzay Teknolojileri Dergisi. 2021; 14(1): 1 - 7.
IEEE	Döken B,Koç İ,Koç A,Altan M "Dual-band Frequency Selective Surface Design for GSM Shielding Applications." Havacılık ve Uzay Teknolojileri Dergisi, 14, ss.1 - 7, 2021.
ISNAD	Döken, Bora vd. "Dual-band Frequency Selective Surface Design for GSM Shielding Applications". Havacılık ve Uzay Teknolojileri Dergisi 14/1 (2021), 1-7.