Investigation on EBG structures: A critical analysis to optimize the performance of asymmetric couple-line bandpass filter

Author(s):  
S. Parvez ◽  
N. Sakib ◽  
M.N. Mollah
2020 ◽  
Vol 3 (2) ◽  
pp. 59-66
Author(s):  
Afif Orifansyah ◽  
Wisnu Djatmiko ◽  
Baso Maruddani

Abstrak. Penelitian ini bertujuan untuk merancang, menguji bandpass filter mikrostrip dengan metode hairpin pada frekuensi (2,3 GHz sampai dengan 2,4 GHz), dengan bandwidth 100MHz. Penelitian dilaksanakan di Laboratorium Telekomunikasi Lantai 4 (Gedung L1) Universitas Negeri Jakarta, pada bulan Maret – Oktober 2016.Bandpass mikrostrip metode hairpin merupakan pengembangan bandpass mikrostrip edge coupled, Konsep Haipin filter memiliki panjang resonator λ/2 yang terkopel secara paralel dan bentuk resonatornya seperti huruf ‘U’. Teknik ini merupakan pengembangan dari parallel couple dimana saluran couple line λ/4 dilipat sebesar L atau ((λ/4)-b), b adalah panjang saluran yang tidak mengalami kopling.Dari hasil penelitian bandpass filter hairpin dibuat dan diuji secara simulasi dengan hasil perhitungan kemudian simulasi menggunakan hasil fabrikasi dan pengukuran. Sehingga dapat disimpulkan bahwa bandpass filter hairpin ini berhasil didesain pada perangkat lunak CST Microwave Studio, difabrikasi, dan diuji menggunakan alat ukur network Analyzer dengan hasil parameter frekuensi cut off 2,355 GHz, bandwidth sebesar 106 MHz.


2007 ◽  
Vol 177 (4S) ◽  
pp. 126-126
Author(s):  
Matthew E. Nielsen ◽  
Danil V. Makarov ◽  
Elizabeth B. Humphreys ◽  
Leslie A. Mangold ◽  
Alan W. Partin ◽  
...  

2020 ◽  
Vol 25 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Amaia Del Campo ◽  
Marisalva Fávero

Abstract. During the last decades, several studies have been conducted on the effectiveness of sexual abuse prevention programs implemented in different countries. In this article, we present a review of 70 studies (1981–2017) evaluating prevention programs, conducted mostly in the United States and Canada, although with a considerable presence also in other countries, such as New Zealand and the United Kingdom. The results of these studies, in general, are very promising and encourage us to continue this type of intervention, almost unanimously confirming its effectiveness. Prevention programs encourage children and adolescents to report the abuse experienced and they may help to reduce the trauma of sexual abuse if there are victims among the participants. We also found that some evaluations have not considered the possible negative effects of this type of programs in the event that they are applied inappropriately. Finally, we present some methodological considerations as critical analysis to this type of evaluations.


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