247 Threads found on edaboard.com: Reflector
There are a number of excellent books on the subject to get started with a general design. The demands that a reflector on a processor are significant so unless you have a relatively large computer and the appropriate variations on the software (FE-BI in particular) HFSS may not be the best tool. Look into TICRA as an alternate.
RF, Microwave, Antennas and Optics :: 11-15-2016 00:29 :: Azulykit :: Replies: 3 :: Views: 550
i am planning to design a VSAT antenna.... i managed to make a horn antenna....now just need to add a reflector in front of this....Please can anyone describe me the geometry of Paraboic shape in CST? or what kind of extrude curve i have to use....this must be a great help for my personal projects. only the physical reflector design i am searching
Electromagnetic Design and Simulation :: 11-13-2016 21:52 :: Ayasink :: Replies: 1 :: Views: 758
Hai everyone can anyone tell me how and where we can get the mathematical equations for the antenna design.We will design a different types of antenna can we get the mathematical support for everything like length width distance between the reflector plates and the antenna for dipole the gap between the two dipoles like that???
Electromagnetic Design and Simulation :: 09-24-2016 04:46 :: rajarani :: Replies: 1 :: Views: 499
Its a real pain to maintain parabaloidal reflector at proper proportions and at the same time providing proper flare. I have found flaring easier than and reflector cumbersome perhaps there is a cheat way to set a flare up to have a reflector (parabaloidal) reflect low frequencies despite its inadequate dimension?
RF, Microwave, Antennas and Optics :: 09-25-2016 07:07 :: Zak28 :: Replies: 0 :: Views: 436
Can you help me to design a Reconfigurable Frequency Selective reflector in is fed by the monopole antenna and the FSR plates are made up of copper.FSR acts as a reflector when the switch is ON and it acts as a transparent when the switch is OFF.For this i want some formulas like how to calculate impedence for the FSR and what should be the
Electromagnetic Design and Simulation :: 08-26-2016 08:12 :: rajarani :: Replies: 0 :: Views: 309
Could you please let us know more about the Frequency Selective reflector?
Is it FSS layers beneath a planar monopole antenna?
Electromagnetic Design and Simulation :: 08-18-2016 08:18 :: Chao Gu :: Replies: 2 :: Views: 423
I need to design 36" x 9" in cassegrain configuration operating in E-band (Narrow bandwidth).
I know how to design regular casssegrain but in this case I'm worry about the horn/sub-reflector blockages. Is splash plate design possible for proper illumination for that fan beam? It would be great if I can remove the spa
RF, Microwave, Antennas and Optics :: 06-04-2016 13:03 :: jiripolivka :: Replies: 2 :: Views: 491
You just design an antenna having a 120 degree azimuth beamwidth and plot its pattern the same way you plotted the unidirectional antenna. Typically these are v-pol colinear arrays with a reflector. You could use image theory to calculate point source phases and locations to obtain the azimuth array factor.
Electromagnetic Design and Simulation :: 05-01-2016 01:33 :: AA1LL :: Replies: 1 :: Views: 590
With FEKO Lite you're stuck with the 500 triangles. To do a reflector antenna you'll need the full version, or you can try GRASP. There's a student edition that's free. I personally haven't used it so I won't be able to be any help, but a colleague of mine speaks highly
Electromagnetic Design and Simulation :: 03-22-2016 04:37 :: dr_em :: Replies: 1 :: Views: 542
I designed a simple corner reflector with HFSS and I set terminal impedance to 75 ohm.Here is my Hfss output S11 and input impedance of my antenna.
(So at F=8 Gighz we have S11=Gama=10^(-10.7358/20)=.2905
(as you see at the F=8Ghz image part is approximately around 0 and so w
RF, Microwave, Antennas and Optics :: 02-25-2016 21:07 :: baby_1 :: Replies: 0 :: Views: 709
I have a horn antenna working at 144GHz with A=12mm and B=14mm. Then I'll illuminate a satellite dish of 57cm diameter with this antenna, with the feed located at the focal point of the parabola. I have the radiation pattern of the horn, made with MATLAB.
The goal is to know the beam propagation (power radiation) pattern of the parabola in the far
RF, Microwave, Antennas and Optics :: 02-25-2016 14:24 :: Gilda :: Replies: 0 :: Views: 563
I am facing an issue. I have modeled a coaxial cable and modeled as well one rectangular mirror or reflector inside the cable such that we can see dips in S(1.1) vs Freq.
but the problem is after having first dip at 13 GHz, then the graph is distorting heavily and looks more like noise. Can anyone say what possibly could be done to
Electromagnetic Design and Simulation :: 01-30-2016 07:45 :: farhanahmed :: Replies: 0 :: Views: 377
What would be more correct for calculations:
1) connecting two antennas centers with point reflector using non-parallel lines
2) connecting two antenna centers with point reflector Z-position using parallel lines (so the second line does not ends exactly on point reflector, but altered in Y-direction by antenna distance)
RF, Microwave, Antennas and Optics :: 01-05-2016 06:09 :: Terminator3 :: Replies: 0 :: Views: 478
In the project manager look for the reflector antenna icon ...... make sure you have set up a far field sphere to calculate radiation patterns in the first place.
that plus the information above.
RF, Microwave, Antennas and Optics :: 10-28-2015 22:01 :: Azulykit :: Replies: 4 :: Views: 628
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For Sale: :: 09-02-2015 07:23 :: Ivy91 :: Replies: 0 :: Views: 161
Use several good Toshiba or Cree 1W or 3W LED and heatsink then drive with Thermistor to regulate Logic level <=50mOhm Nch MOSFET with drain to cathode LED and epoxy thermistor to heatsink for 50'C to adjust 1V gate voltage from 3.7V LiPo.
If you dont know how to design an LED heatsink, buy one with heatsink and reflector.
LED should be 2.85V @
Hobby Circuits and Small Projects Problems :: 08-24-2015 23:36 :: SunnySkyguy :: Replies: 2 :: Views: 995
I concur with Bigdogguru. Depending on where it is fitted, and whether you can live with it being slightly directional (more than it already is), you might be able to use it as the active element in a short Yagi antenna. In other words, fit a reflector behind it and one or more director elements in front of it. Something along the lines of a TV ant
RF, Microwave, Antennas and Optics :: 07-04-2015 08:06 :: betwixt :: Replies: 4 :: Views: 557
I want simulation the cassegrain reflector antenna with feko. when i run ke simulation i have this problem,ERROR 36728: Internal FEKO error. Please notify the FEKO support team and provide the error number, preferably together with the FEKO input and output files.
please help me how can i solve it?
Electromagnetic Design and Simulation :: 03-15-2015 06:46 :: Roxana bagheri :: Replies: 0 :: Views: 530
I want simulation a cassegrain reflector antenna with feko and get radiation pattern of it.
RF, Microwave, Antennas and Optics :: 03-11-2015 07:07 :: Roxana bagheri :: Replies: 3 :: Views: 2164
I mean to say how to assign excitation in a zone plate...
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I want to simulate the plate as a reflector (by placing horn in front of plate) as well as a lens (by placing horn behind the plate). I want to know the steps for assigning boundaries and excitation for the plate part and then sim
Electromagnetic Design and Simulation :: 02-02-2015 17:23 :: Kruti Gajera :: Replies: 5 :: Views: 1218