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20 Threads found on Antenna Radome
Hello, I am designing a Patch antenna with a dielectric radome (Delrin) to be used for TT&C operations in LEO Orbit, can you suggest me a suitable solution/material to cater for ESD without affecting my radiation patterns too much. Regards,
Do you have a way of monitoring the S11 (reflection) from the antenna or signal detected by a receiver? You do run some quick experiments to see. I am pretty confident you could get away with a quarter wavelength or less.
Hello, I have a question about the simulation of large dielectric structures with FEKO, with particular reference to radome simulation. My objective is the evaluation of the effect of a large dielectric radome with a size of ~10 lambda on the pattern radiated by an antenna placed inside the radome structure. As a (...)
hi i've simulated a PIFA antenna using HFSS and CAD FEKO. after that i installed a radome on antenna. after that i observed that maximum gain is increased!!!!in both software. what do you think? what may be wrong? i'm sure theorically gain should decrease !!!
Hello mates, I have a very tricky question for you today: I need to simulate an antenna (loop) inside a pipe full of water. Obviously the antenna has been protected by a proper radome. I need to know the farfield of the overall structure, but a problem occured. Suppose that the plane of the loop is the yx and the pipe's axis is (...)
Hi! I have desinged a patch array antenna with sidelobe level less than -16 dB and return loss is better than 13 dB over the designed bandwidth (center freq. 13.7 GHz). Now the antenna need to be positioned inside a housing where the location of the antenna is fixed, i.e., nothing can be changed like distance from the (...)
Hi to everyone! I have to simulate with hfss an infinite wall of a given material next to a radome structure (with an antenna inside) wich I already have designed. (the basic idea is to study the behaviour of an antenna inside a radome and with the radome structure fixed on a wall) I tried to apply a (...)
The algorithms are approximations only and some times gives expected results. Algorithms are available with single element. These calculations suffers from the coupling effects of adjacent surrounded antennas and end effects like radome at edges is different from the center etc.
refer to radome-enclosed antennas by Kozakoff
Replace one of the metal walls of the metal case by a wall made of plastic material. Then the antenna can radiate through the plastic wall.
Hi! I have to simulate the behavior of an antenna (a simple dipole) surrounded by a radome. My professor told me to plot the gain at different thickness of the radome. I have notice that if I plot the rE (db) (the power of the E field) I obtain the maximum value with the antenna with no radome, and (...)
Hi. Yes, what I means real gain is the "realized gain". Generally speaking, the "realized gain" include the impedance mismatch for the gain calculation. For example, if the S11 (return loss) for your antenna is -10dB, which means that 10% of the power are reflected back to the source. So the input power for the antenna is only 90%. If your anten
Hi I design radar antenna at 1.52 Ghz. I intend to use cover sheet for dipole element to avoid weather. Can you give me a suggestion for choosing the material for cover sheet. I find some information as polycarbonate, ABS,.. . As i find the PC have dielectric constant 2.9 . And how about ABS or other. Does it change the frequency respond and ra
Two that come to mind are 1) does the antenna impedance change with and without the radome? and 2) how is the radiated field affected?
hi Have any body a good reference for radome materials? Theare is a book in artech house "analysis of radome-enclosed antenna" do you have it?
have any body the book "analysis of radome-enclosed antenna"? please upload it
I want to know how a BTS antenna looks inside the radome covering, as seen on BTA antenna towers? Can any one refer me to a picture or url?? Thanks. M
Your radome is not designed properly. It should not affect any of the antenna parameters. It should be very thin compared to a wavelength and have a relative dielectric coefficient of 2 or less. A common design method in the past was very thin inner and outer sheets with a center core of foam plastic material. Another option is a half wave thic
These are protective coverings for antennas that do not hinder the antenna operation. They were first used in RADAR applications and the name is the contraction of RADAR and dome. They protected the parabolic reflector antennas from the effects of wind (mechanical forces) and weather (Ice on the reflector changed the radiation pattern).
For my knoledge, the radome design is an art rather than a tecnique. Only few factories around the world know it. There are almost 2 starting considerations: 1) The radome should protect the antenna from external weather regardless the attenuation and beam distorsion. Rugged construction is looked for. Mechanical resistance is the (...)