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Questions related to Antennas
Hi, A Fabry Perot Cavity allows to increase the directivity of a low gain antenna by putting in the top of cavity a superstrate with high permittivity such as a ceramic (er=10.2). However,...
10 February 2021 7,074 8 View
I have design a 6GHz antenna for wifi.The feed line width is 2mm and there are 2 parasitic elements beside this feed line with 1 mm gap.Is there any problem at the time of febrication?
05 February 2021 9,413 3 View
In Microstrip patch antenna ,How to turn on the diode ,which is placed in the antenna slot with DC blocking capacitor ?but entire patch is in AC supply due to antenna feed..
02 February 2021 5,104 3 View
I am attaching my design and result of Gains.S11 parameter is less than -10dB from 3.1 to 9.8 Ghz.Z11 magnitude also lies between 40 -60 ohm for this range .Still gain is negative. Pls help
30 January 2021 4,545 3 View
Should I make 2 antennas, one for 2.4 GHz and one for 5.8 GHz? How should I approach the problem if I want to design the antennas which cover 400 and 900 MHz and 2.4 and 5.8 GHz? All together in...
27 January 2021 1,082 3 View
So, I have a design, two dipoles working at UHF and VHF. We fed using a diplexer. I am having difficulties with the testing using network analyzer. VHF passes but UHF, specially at 400 MHZ, the...
27 January 2021 8,920 8 View
In order to enhance the antenna parameters, meta-material unit cells are added but where to load them is more advantageous either at ground plane or at the patch side, also is it necessary to add...
25 January 2021 3,173 4 View
I want to calculate body temperature for my final project in my master's degree to develop a model which can detect fever . .i want a database of children or adults with their temperature or...
24 January 2021 575 0 View
So, I came across, where antennas are being tested in a building ( a plant), where all sorts of big equipment are around and of course the ceiling. lot of multipath which can affect the...
22 January 2021 9,775 3 View
I want to give a CPW feed anyone suggest how to providea feed in antenna which I'm designed
19 January 2021 3,666 2 View
If I have two antennas at transmitter called T1 and T2 and signals are simultaneously transmitted from both antennas at same frequency towards two antennas at the receiver called r1 and r2. Is it...
17 January 2021 4,915 3 View
So, I have a helix antenna designed for 400 to 900 MHz. This antenna is designed using fabric and as a fabric, it gets wavy and scrambled which changes the performance of the helix. I am thinking...
14 January 2021 2,619 4 View
In the classical electrodynamics, there is one problem - to find the EM fields created by the charge moving with the constant velocity in the circular orbit or in the helical path (free electrons...
13 January 2021 3,909 1 View
I usually don't see path loss models for IRS consider polarization. But specific to mmWave application, the polarization of the antenna has some effect. Is there any research that has explored this?
09 January 2021 3,209 1 View
Hi Good time How can I write MATLAB simulation code to define a distributed MIMO system? I have two base stations and one user and I have trouble determining the size of H = [H1(d1); ... ;Hl(dl);...
09 January 2021 9,769 3 View
Hi all, I want to insert a random source that changes at each step size so slice plot will be with respect to time like the source f(r,z,t0) will be the random 2d matrix generated at t0 and at...
09 January 2021 7,430 0 View
Reading about helical antenna before begin to design. How many turns should a helix have? How can I determine good number of turns? I know Length of the antenna = NS. Should I just play with the...
07 January 2021 3,338 2 View
I am trying to prove the formula that describes the antenna pattern of a circular array, in which the elements that make up the array, in addition to being rigidly translated from each other, are...
06 January 2021 2,484 10 View
Is there any difference of radiation properties if same antenna is measured from different anechoic chambers?
06 January 2021 6,869 7 View
PLPDA have radiating element on both sides of the substrate. so how to apply port. i have attached the figure below.
04 January 2021 4,129 6 View
Hi, ive desined an array of antennas with 8 elements. When i sımulate it i got this error message in CST "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solve"....
03 January 2021 7,707 6 View
Hello Happy New Year , I wish the best for all of us and our kind planet Earth in 2021 OK, I designed an microstrip patch antenna on CST and now i want to use EBG structure to enhance its...
01 January 2021 5,473 9 View
Can the dual-band antenna be called as a shared aperture antenna? Difference between shared aperture antennas and dual-band antennas?
31 December 2020 7,301 4 View
actually for PLPDA, it is designed on both sides of the substrate for providing 180 degree phase shift between the elements
29 December 2020 3,271 3 View