Effect of open stub and short stub of Band pass filter performance??

Dear All! I have seen several papers on design of microstrip band pass filter using open/short stub...I am not quite clear about where to use open stub and where to use short stub or what is the...

09 October 2019 7,410 3 View

How to calculate dimension of stubs of stub loaded resonator BPF to work in UWB band?

Hello!! I have seen several papers using various techniques (e.g., SLR, SIR) to design BPF for UWB band applicaton..I wish to ask how the dimensions of filter are decided/choosen so that it...

08 September 2019 3,781 4 View

Why fractal filters(BPF) usually have better selectivity (roll off rate)??

Dear Researchers, I have studied several papers on design of band pass filter (BPF) using fractal structures say Koch Fractal, Minkowski Fractal etc. They all usually have good rolloff rate. What...

03 April 2019 9,186 2 View

Why cutting a slot on SIW structure produce band pass response?

Hello!!! Simple SIW (Substrate Integrated waveguide) structure is a rectangular guide created within a substrate by adding a top metal over the ground plane and caging the structure with rows...

03 April 2019 4,649 1 View

In Multi Mode Resonator(MMR) band pass filter (BPF) using open stubs, why position of Transmission Zeros (TZs) is dependent on stub length??

Dear Researchers, I have designed a SIW MMR filter using comb slot (acting as open stub). In the mode chart, the position of TZ (transmission zero) esp at upper stop band is changing with the...

02 March 2019 7,146 4 View

Extract Permittivity and Permeability using NRW Method?

Dear Reserachers, How to Extract Permittivity and Permeability using NRW Method for a metamaterialin HFSS software. Anyone who know, kindly guide the steps.. Thanks Nitin

10 November 2018 3,946 5 View

Rule of Plagiarism in reputed Journals (IEEE/Wiley/Elsevier/Springer)??

Dear Researchers, Can someone kindly guide about rules of plagiarism in these reputed journals? Is it counted for consecutive four(4) words or more..As per new UGC rules (in India) 14...

08 September 2018 3,211 4 View

Regarding review time of few journals in Electromagnetics?

Regarding review time of few journals in Electromagnetics I need to know average review time of following journals:1. journal of electromagnetic waves and applications (Taylor francis)2. IETE...

07 August 2018 5,900 3 View

How to calculate roll off rate of a band pass filter?

dear Reserachers, pls guide how to find value of roll off rate at both edges of Band pass filter in term of dB/GHz. i have attached a graph of someone's paper.kindly guide how he has found value...

07 August 2018 9,227 1 View

How to calculate roll off rate of a band pass filter?

Please find attached paper.In second last page, author have given formula of roll off rate. Can anyone guide howto read 40db and 3 db attenuation point in S(S Vs f) parameter graph as given in...

31 December 2017 2,892 2 View

Is SSRN e-Journal Scopus indexed?

I have publication in SSRN. I want to know whether it is Scopus indexed? Does it show impact factor? What is its ISSN No.?

02 March 2021 4,565 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

What is the most reliable source to get Impact factor of journals?

Source to get Impact factor of journals

01 March 2021 6,654 2 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How can I publish a manuscript in free or low cost journal with good H-Index?

Dear all I am going to publish my manuscript which is from my thesis in a good H-Index journal but I found them very expensive(I don't have financial support) based on the exchange currency of my...

28 February 2021 7,800 6 View

What is Flat Lens Antenna?

28 February 2021 5,433 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

How to add missing citation?

Dear colleagues, I have found that many authors have a concern regarding their missing citation in RG because often citation in RG is lower than google scholars. I also missed some citation...

26 February 2021 928 6 View

Is IMPACT FACTOR justified in case of Taxonomy?

There is huge pressure of getting good impact factor on scholars now a days. On the other hand Taxonomy is a very dry subject and the concerned papers can only get citation in same group of organism.

26 February 2021 5,851 1 View