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doubt is why we want to measure the radiation pattern while simulating the antenna in hfss,and what is the purpose of measuring vswr in antenna design ,is there is any coorelation between the vswr and return loss. 2.correlate the vswr,radiation pattern definition in detail with hfss (...)

## chaching the Gain of each polarization

The directivity diagram dosen't look right. As it is symmetrical you should have the same radion pattern in H and V. It looks like it's basically is just a wrinkled up cross dipole, if so it should have the same radiation pattern as a dipole.

## How to make this UWB patch antenna better

How to make this UWB patch antenna better Hello Sir/Madam... Kindly see the attached picture. I have made a patch antenna. What I need I want to know how to make it better so that its radiation pattern will become uniform through out the bandwidth almost circular pattern. I want to also make its S11 (...)

## satellite footprint w.r.t beam width

The calculation probably shows the area at the foot of a cone where the transmitting antenna is the peak and the angle is known from the antenna radiation pattern. That doesn't necessarily change with gain although there would be some relationship between them. The gain might detemine the strength within the footprint but (...)

Hi all.. after simulating my antenna in IE3D, i fabricate it and measured using VNA, In my results they are given me gain vs frequency value in excel sheet, i just want to know how to plot Axial ration bandiwdth plot using that reading.. plz reply

## Radiation pattern of dipole antenna

135715135716 Hello Can anyone explain me why the radiation pattern look like this for a dipole antenna on flat substrate. It is very wide and asymmetric to theta = 0 degree. Thanks

## determining antenna polarization

in order to measure the radiation pattern of an antenna both the antenna should be of same polarization. 1. how to determine the polarization of the antenna. can you tell by looking at an antenna. 2. if in datasheet it's written only linear then which type of polarization it is (...)

## AixBox radiation for PIFA antenna

Hello every one, I'm a student, i have designed a PIFA antenna with coaxial work correctly but the problem when i want to design the airBox for radiation pattern i have a bad result.i have tried to put the length of the box lambda/4 but i have the same problem. Please it's urgent any body can help me to configure my box and thanks

## radiation pattern of monopole antenna

i need help about radiation pattern of monopole antenna plot in CST. In 3D pattern its doughnut shaped , but when choose phi=0 , i not get full circle. my antenna is placed in X-Y Plane. if i choose theta=0 then the complete circle i getting in polar form. should i have to choose theta =0 for (...)

## the radiations of the seawater antenna

can anybody please explain the radiation pattern of seawater antenna to me for my further researching?

## Couldn't get right radiation pattern of an on-chip monopole antenan

Hello guys! I'm simulating a CPW fed on-chip monopole. But the right radiation pattern couldn?t be obtained at 79GHz even when the length of antenna is changed from 0.2mm to 0.9mm. But I could get a good radiation pattern at around 50 to 60GHz whatever the antenna?s length is. 135036 (...)

## minmum separation between the wearable antenna and body

how to calculate the minimum separation between body and wearable antennas. if it's very small the absorption because of body will be high and and also it effects the input impedance and the radiation pattern of the antenna. one good approximation is to be keep the distance of (2d2/lambda) from the body for which results (...)

## Air box radiation PIFA antenna

Hello every one, I'm a student, i have designed a PIFA antenna with coaxial work correctly but the problem when i want to design the airBox for radiation pattern i have a bad result.i have tried to put the length of the box lambda/4 but i have the same problem. Please it's urgent any body can help me to configure my box and thanks

## perfect magnetic conductor on HFSS

hi , I have a problem that when I make a dipole antenna parallel to the PMC the radiation pattern is wrong so can someone help me with the steps or something like that ?!

## HFSS Questions about S11 and Gain Pattern

I assume this is a resonant patch-like antenna. For the S11, do you know why there is a point with low S11 around 7.25? It's probably some other resonant mode of the antenna. Have you investigate the radiation patterns/current patterns? And for the gain pattern created for 5.8 GHz why there i

## HFSS Instantaiation and radiation pattern

I did not understand your first question. Yes, HFSS computes fields on the outer radiation boundary and then it calculates the Far-field radiation pattern from the calculated field quantities (on radiation boundary)

Hello everyone I need your help, I do not know if what I'm doing in cst is right or not! I wish to have E_theta and E_phi radiated by the antenna: Figure 1. I choose E_field or E_pattern? Figure .2. Is this what the E_theta and E_phi ?? Thank you for your help133954133955

## what is inferred from the radiation pattern attached below.

I have attached the radiation pattern of my design simulated in HFSS.what is inffered from this pattern.how shall i explain my pattern to others.

## polar plotting software

I'm looking for a polar plotting routine/app. I need to plot the radiation pattern of an antenna and only have a rectilinear plot capabilities. Input data to the plotter will be via a data file.