I calculate gain in 4-20 GHz of broadband antenna but in 12GHz gain decreased ( gain drop ) i don't know the reasons
Could any one help me to give reasons ??????
Various parameters control the gain of the antenna. They are:
1. Antenna's matching profile which is a function of frequency. Under unmatched frequencies, the gain will drop significantly.
2. The creation of standing waves at a certain frequency.
3. The point of measurement of radiation intensity w.r.t elevation and azimuth angle.
4. The radiation resistance of the antenna is a function of frequency.
5. Co and cross-polarization as a function of frequency has got a huge impact on the gain of the antenna.
6. Directivity and HPBW control gain.
thank you very much Sovan Mohanty Shujat Ali
check the impedance matching of your design around 12GHz (look at S11 parameter). which gain are you looking for (total gain, realized gain...)?. it is important to check those parameters.
check the mechcells used or substrate`s type, i guess are the most reasons for decreasing the gain
please provide me the most recent Scopus Index Journals List, February-2021
27 February 2021 3,545 1 View
I made anew account because I was invited be one of my coauthors and I forgot my password by then
28 December 2020 6,409 2 View
I have tried different pretrained networks with Adam optimizer, and obtained high performance. However, when I tried it with Alex network, the performance was poor. Could you please help me...
28 September 2020 5,621 1 View
Hello everyone, I am trying to use Popgene 32 software for analysis of binary data for dominant marker of five ISSR primers across five populations and having 38 loci. Unfortunately the program...
22 September 2020 7,369 4 View
I have ordered primers from Thermo fisher scientific and in the analysis sheet it has been mentioned two tm The first one is tm 1M na+ 70 and the second is Tm 50mM na+ 48 and each has different...
29 August 2020 6,890 12 View
I have prepared 15wt.% PDMS and poured it on a glass petri dish, then let it dry for 72 hr at room temp. after I tried to peel it and it doesn't work, so I am crosslinked in an oven for 3 hr , but...
26 July 2020 9,892 2 View
For membrane preparation PVDF will be used , and I was wondering which solvent is the best for dissolving it, non-Toxic solvent , useful in dissolving other polymers such as PES, PDMS, Peba
05 July 2020 1,655 5 View
I want to learn R programming language but I do not know a source from which I can start, I need it for statistical analysis of Ecological, Molecular, floristic, and Taxonomic studies.
14 June 2020 4,985 9 View
it has groups that allow it to be fluorescent but it doesn't
10 April 2020 6,483 3 View
but photon doesn't have or it is negligible and it could have huge amount of energy . HOW?
10 April 2020 3,545 14 View
Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...
02 March 2021 3,024 2 View
I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...
01 March 2021 9,701 5 View
Hello every body Does any one has any idea to help me choose a reasonable basis set for intermediate metal ions (i.e Fe2+, Mn2+, Cu2+ and exc.) interactions with guanine or other DNA organic...
01 March 2021 6,187 2 View
Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.
28 February 2021 7,883 3 View
Hi researchers, I am searching for some accurate way to do the circuit modeling of planar CPW-fed monopole antennas. I have gone through the literature where mostly circuit modeling is done using...
28 February 2021 7,016 1 View
Is there any reason for decrease in fluorescence emission intensity of HSA,BSA when increase the concentration ?
28 February 2021 3,653 4 View
I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...
28 February 2021 4,426 2 View
28 February 2021 5,433 3 View
What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?
28 February 2021 6,516 5 View
Hello everybody! I have a problem with developing a compact antenna for the 1MHz-5MHz frequency range. Tell me what type of antenna can be used and what books and articles to read to perform this...
27 February 2021 7,710 4 View