Compact Liquid Crystal Based Tunable Band-Stop Filter with an Ultra-Wide Stopband by Using Wave Interference Technique
المؤلفون المشاركون
Cai, Longzhu
Xu, Huan
Chu, Daping
المصدر
International Journal of Antennas and Propagation
العدد
المجلد 2017، العدد 2017 (31 ديسمبر/كانون الأول 2017)، ص ص. 1-11، 11ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2017-02-19
دولة النشر
مصر
عدد الصفحات
11
التخصصات الرئيسية
الملخص EN
A wave interference filtering section that consists of three stubs of different lengths, each with an individual stopband of its own central frequency, is reported here for the design of band-stop filters (BSFs) with ultra-wide and sharp stopbands as well as large attenuation characteristics.
The superposition of the individual stopbands provides the coverage over an ultra-wide frequency range.
Equations and guidelines are presented for the application of a new wave interference technique to adjust the rejection level and width of its stopband.
Based on that, an electrically tunable ultra-wide stopband BSF using a liquid crystal (LC) material for ultra-wideband (UWB) applications is designed.
Careful treatment of the bent stubs, including impedance matching of the main microstrip line and bent stubs together with that of the SMA connectors and impedance adaptors, was carried out for the compactness and minimum insertion and reflection losses.
The experimental results of the fabricated device agree very well with that of the simulation.
The centre rejection frequency as measured can be tuned between 4.434 and 4.814 GHz when a biased voltage of 0–20 Vrms is used.
The 3 dB and 25 dB stopband bandwidths were 4.86 GHz and 2.51 GHz, respectively, which are larger than that of other recently reported LC based tunable BSFs.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Cai, Longzhu& Xu, Huan& Chu, Daping. 2017. Compact Liquid Crystal Based Tunable Band-Stop Filter with an Ultra-Wide Stopband by Using Wave Interference Technique. International Journal of Antennas and Propagation،Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1159431
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Cai, Longzhu…[et al.]. Compact Liquid Crystal Based Tunable Band-Stop Filter with an Ultra-Wide Stopband by Using Wave Interference Technique. International Journal of Antennas and Propagation No. 2017 (2017), pp.1-11.
https://search.emarefa.net/detail/BIM-1159431
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Cai, Longzhu& Xu, Huan& Chu, Daping. Compact Liquid Crystal Based Tunable Band-Stop Filter with an Ultra-Wide Stopband by Using Wave Interference Technique. International Journal of Antennas and Propagation. 2017. Vol. 2017, no. 2017, pp.1-11.
https://search.emarefa.net/detail/BIM-1159431
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1159431
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر