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43 Threads found on Elliptical Antenna
googled this: I guess the ideal is in the paper... just add a gnd plane to get a monopole.
Hi, all: There are many kinds of structures to achieve UWB performance. The critical point is that you need to give it enough volume for the field. The physical part can be low profile. However, you should give it enough space in the proximity. I tried one antenna with 4 elliptical shapes, I can easily achieve S11 < - 10 dB from 3 to mroe than 1
Hi, A circular polarized wave radiates energy in both the horizontal and vertical planes and all planes in between. The difference, if any, between the maximum and the minimum peaks as the antenna is rotated through all angles, is called the axial ratio or ellipticity and is usually specified in decibels (dB). If the axial ratio is near 0 dB,
Hey, Try looking at the field orientation using the vector field display.. That should give you a fair idea regarding linear polarizations. If you look at the axial ratio of the simulation and if it is between 1 and 2, it is almost circular and if like 4-6, i think you can fairly assume it to be elliptical... Ananth.
Hi, djim: I checked your structure. The problem is in the connection between the feed line and the elliptical patch. They have only one common vertex but no common edge. They are disconnected. I have fixed the structure as pcp_r2.geo in the attached I also created a parameterized model pcp_r3.ie3 on IE3DLIBRARY. All the major d
Hi! I'm using Meep and what I want to do is simulating two antennas, one tansmitting and the other receiving, and make a comparison between the transmitted and the received pulse. How can I be sure I'm considering the distorsin introduced by antennas? and how can I be sure my antenna is indeed radiating? Is it correct the way I feed (...)
Hi, Wingji: Yes. You can do it quite easily using IE3DLibrary. Please use IE3DLibrary to open the existing examples in .\zeland\ie3d\ie3dlibrary_examples. There are quite some good examples. In fact, the ep4.ie3 file is a very interestsing one. It is a UWB antenna created using 4 elliptical shapes. You can change the dimensions of the (...)
Please find the file: c:\zeland\ie3d\ie3dlibrary_examples\crescent_patch_shifted.ie3 file for IE3DLIBRARY. It is more complicated than the monopole. The structure is object-oriented and fully parameterized. You can just take out the object for the circular circular hole and change the aspect ratio of the elliptical patcha nd it becomes the shape ma
I'm referring to polarization as in Linear, Circular & elliptical. For an antenna in general, there are 1/r, 1/r^2 and 1/r^3 terms for the field. In the near field, the 1/r^2 and 1/r terms are non-zero. Can i say that since the 1/r term exist also in the near field, the polarization would be independent of distance.
I think there are many ways to make a circular polarized patch antenna. Corner truncated is an easy one. The other ways are "dual microstrip-edge-fed circularly polarised rectangular patch antenna", "elliptical edge-fed circularly polarised patch", "circular-polarised slotted cross patch", and many more. I have experience with corner (...)
Hi All, I designed an UWB antenna Using HFSS. Is there any way that i can check the polarization of my antenna (e.g circular-linear-elliptical)?
An elliptical monopole printed antenna, for instance
Hi, I am a newbie to this forum and also to using HFSS for antenna design. I have simulated a design using HFSS and still unsure whether the antenna can be used within the UWB range. So far, I have the VSWR, s11 and Gain radiation patterns in DB from 2-11 GHz(attached). I need advices/suggestions on how to improve on my design, how to plot radia
I have an assignment to design microstrip patch antenna at 5.83ghz with elliptical patch please help how to design .
Ultra Wide Band antennas in PCB can have an elliptical 2D form, for instance. You can find some HFSS tutorials, as starting point to know how to use the software. Ex. em: talk - HFSS Tutorial 1: Microstrip Patch antenna
i am doing a project on elliptical patch antenna.i need design equations and calculations please give me any advice for this
Can anyone please design for me an elliptical patch antenna working at 1.5-2.5 GHz. I'll be grateful. Contact -
Rain does not consist of round droplets but have more elliptical size and are tilted (due to wind). So when you excite a rainy area with a vertical polarized wave, the induced current in the rain droplets may have a (small) horizontal current component. This reradiates and creates a horizontal polarized EM wave component. This component couples
can u tel me what formulas used to find the resonating frequency or radii(elliptical patch antenna)...?? is it different from when we analysis for truncated elliptical patch antenna....
Hello, I'm trying to improve the gain of my antenna using superstrate. I read a few journals regarding this topic but i could not determine the thickness of the superstrate needed. The frequency that i need to obtain is 5.8GHz and i'm using coaxial feed. This was one of the papers i referred. The thickness of my ground plane is 0.035mm, substrate
Hello everyone, I've designed an elliptical patch antenna in CST which works in the frequency of 5.8GHz. But I'm having problems determining whether it is radiating in circular polarization. If I'm not mistaken, for circular polarization the axial ratio must be 1 and if in ludwig coordinates, the field of vertical and horizontal must be in the sam
Hi all I require an optimetrics example on microstrip patch antenna can u help regards kartik kartikkhurana@indiatimes I assume you are talking of HFSS since you said Optimetrics, but perhaps other software uses that name. If you have HFSS version 13 or 14, you can get a free antenna design kit,
Hi, The 'pole' is polarization. So, one electromagnetic wave can be characterized by her polarization of the electrical field (E-field) : in the orthogonal plane of propagation, the E-field can be moving in several ways. If the E-field describes one ellipse : the polarization is elliptical :-) If the E-field describes one circle (heliax
hi axial ratio is in this range:0dBelliptical polarization.
The E field component was chosen to be parallel with the dipole element. The H component is therefore orthogonal or normal to it. Take care- in the "far field " only. (1,2,3) To radiate the circular or elliptical polarization of a wave, the easiest is to use the helical antenna. You can combine two dipoles with a 90-degrees phase shift to radiat
Attached is a page in Kraus antenna book, I cannot verify the equation on the last line. Here is my work E_y=E_2(\sin{\omega} t \cos \delta \;+\; \cos \omega {t} \sin \delta) , \sin\omega {t} =\frac {E_x}{E_1}\;,\; \cos \omega {t} =\sqrt{1-(\frac{E_x}{E_1})^2} \Rightarrow\; E_y=\frac {E_2 E_x\cos \delta}{E_1}\;+\;E
Thanks jiripolivka for your fine explanation, got two more questions... :) Why a rectangular waveguide creates elliptical polarization? is it because of the unequal lengths of the two sides of the rectangular cross section? Then, if we insert a quarter wave plate into a circular waveguide, will it create circular
Hi, Previously I managed to get dual frequency on a single patch by experimenting with random slots on the patch itself. I could share some links where the researcher actually manage to achieve dual frequencies using multiple slots. "elliptical Shaped antenna With Parasitic Superstrate" -IEEE Pap
Hi, I am not sure I understand your question. but tne factors that determine the polarization of the antenna ar 1. The antenna shape, e.g. helical antenna has elliptical polarization while pyramidal horn has linear polarization. 2. The antenna feed. BR Adl_48
Hi: I tried an antenna example with 4 elliptical shapes and the result is excellent. I could easily achieve S(1,1) < - 10 dB from 3 to 11 GHz. The size is just regular shape. The example is documented in the IE3D manual as an example using the FastEM Design Kit for real-time EM synthesis. Interested users can check it ( ). Regards
Eyeglasses are cut to fit many different frame shapes. I've seen some that look elliptical.
Hi brothers and sisters (alike), I'm into designing a communications systems using microwaves, and I'm kinda new in this field. My team have already calculated and mapped our comm sites and have it profiled mapped, calculated link budgets, losses, system reliability... etc. right now I'm assigned to choose the equipment that will be housed in t
Hi, i am getting elliptical polarization in result of HFSS simulation of a conical horn antenna. i want to give it circular polarization,please help me how to acheive it as i dont know how to define modes as i was told to use TE 01 mode. kindly look into the matter and help me acheive the desired result. thanks.
thanks. Y. Gao, B. Ooi, and A. P. Popov, ?Band-notched ultra-wideband ring-monopole antenna,? Microwave and Optical Technology Letters, vol. 48, no. 1, pp.125-126, Jan. 2006. A. Mirkamali, P. S. Hall, and M. Soleimani, ?elliptical multiple-ring monopole antennas,? Microwave and Optical Technology Letters, vol. 48, no. 1, pp.4-8, J
An Optimization Option on your simulator it will help designing a diplexer. In this way you can tune simultaneous both filters. Also try to use elliptical type filters (LP and HP), to get steeper rejection which would help getting good overall performance.
this may sound to be simple but there is some confusion regarding polarization status of antennne in CST. 1:how to determine that antenna is linearly polarized or circular or elliptical? 2: if its linear then how to determine whether its vertical polarized or horizontally polarized? 3: if its circular or elliptical polarized how to (...)
Stutzman has a book on this subject and there are numerous posts on this site. polarization can be linear or circular (elliptical is the general case). Cross polarization is orthogonal to the one you happen to be interested in so it is a moving target. RHCP is cross polarized relative to LHCP for example.
Rays are only visible for UTD solutions. The PO is more like shining a torch on something and checking if it is visible. Rays can't be viewed for PO solutions. For the UTD you have to make unmeshed plates and they have to be a minimum of 3 wavelengths long, otherwise the approximation becomes invalid. You can try the polyline, elliptical arc,
hi..anyone here know how to determine whether the antenna is perfectly circular polarized or elliptical..can someone explain more about this.. thnx..
co and cross polarizations are measured according to the reference antenna.if your antenna is circularly polarized you need to measure both co and cross gives u the info about polarization if it is RHCP , LHCP or elliptical polarization. for instance if your transmitting antenna is fed at phi=0 and recieved at phi=0 it is (...)
Hi all, I got some question on the polarization of antenna. I know my question is quite long but i really need some help for determine my simulation result. 1. How to identify E plane and H-Plane? E plane =(sweep theta while phi=90), H plane= ( sweep theta while phi=0) 2. How to plot E field in X direction and Y direction? I need to identify
Hello all, I have done parametric analysis of elliptical patch antenna. Now i want to plot gain for different resonant frequencies. Can anyone tell me how to plot gain at different frequencies using hfss? Thanks in advance !! Aarti
Hi I am not familiar with spherical geometry. I am working with elliptical polarization that involves using poincare sphere that present the latitude and longitude angle in spherical geometry. I need to find the great circle angle if given two points that each specified by their longitude angle 2\tau and latitude angle 2\chi[/tex