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## Calculate Antenna Efficiency |

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13 Threads found on edaboard.com: **Calculate Antenna Efficiency**

How can I do it?
As sketched in previous post. Sweep a signal generator over the intended frequency range, measure input and radiated power, **calculate** the ratio for each frequency, plot the result.
I have another question...
Several misunderstandings of S-parameters seems to be involved.
- S parameters can be app

Electromagnetic Design and Simulation :: 05-28-2013 17:01 :: FvM :: Replies: **16** :: Views: **1053**

Hi,
I would just need an equation form which I can **calculate** the aperture **efficiency** of a circular waveguide **antenna**. I have data from gain, wavelength and its physical size. The way that is shown in books is:
Effective area (Ae)=(Gain*lambda^2)/(4pi),
Physical dimensions of open end of **antenna**(Ap)= pi*r^2 (...)

Elementary Electronic Questions :: 06-14-2012 06:41 :: john54 :: Replies: **0** :: Views: **477**

As I have the practical value table of AUT gain ,Ref **antenna** gain, AUT maximum received power ,Ref **antenna** maximum received power (dB) and cable losses value, I am bit unsure about the theoretical formula to **calculate** the **efficiency** using Gain comparison would be highly appreciated if anyone could come forward to sort out my (...)

RF, Microwave, Antennas and Optics :: 05-28-2012 07:56 :: Sriram@measureindia :: Replies: **2** :: Views: **939**

hi
when we simulate any printed **antenna** in simulation software(CST, HFSS) how important it is to assign correct loss property to substrate to **calculate** accurate gain and **efficiency**
and how gain is related with the loss tangent or conductivity of material on which **antenna** is printed
any comments are welcome
regards

Electromagnetic Design and Simulation :: 02-15-2009 20:32 :: shahid78 :: Replies: **0** :: Views: **1378**

hello everyone,
anyone know how to **calculate** the **efficiency** in percent using cst?
hope u all can help me.
regards,
kyg

Electromagnetic Design and Simulation :: 08-19-2008 04:31 :: kyg :: Replies: **5** :: Views: **2125**

Hello everyone
I am trying to plot the radiation **efficiency** of a patch **antenna** vs thickness of the substrate. I want to see the effect of dielectric loss, conductor loss and surface waves on the radiation **efficiency**.
Does anyone know how to **calculate** surface waves for patch **antenna** with different (...)

Electromagnetic Design and Simulation :: 01-23-2008 20:06 :: harishbigh :: Replies: **1** :: Views: **2441**

sir
i m doing project on microwave link planning. i want to **calculate** the gain of **antenna**s as wel as the latitude and longitde distance in matlab.
can any body helps me in this regard. ishall be very thank ful to u.
can any body provides me the matlab code or user guide.
best wishes.
Virus king

RF, Microwave, Antennas and Optics :: 07-29-2007 04:41 :: Virus King :: Replies: **2** :: Views: **1523**

Hi wesleyclone,
Usually we go for **efficiency** ,once we know the s parametrs and there by the resonace of the **antenna** ,you know the frequency at which the **efficiency** is needed and regarding phi and theta ,you can opt for them or not .I guess its better to **calculate** the **efficiency** by defining the whole sphere.

Electromagnetic Design and Simulation :: 02-19-2007 16:24 :: pass1 :: Replies: **2** :: Views: **4206**

Hi All,
How can I **calculate**/plot the Gain and **efficiency** of my **antenna**?
(1) At single/solution frequency
(2) Over the frequency sweep
Apologize about the reposting but I am clueless on this?
Thanks,
Soyuz

Electromagnetic Design and Simulation :: 09-13-2006 20:41 :: Soyuz :: Replies: **2** :: Views: **1479**

Hi All,
How can I **calculate** the **efficiency** and gain of an patch **antenna** modeled in HFSS?
Regards,
-- Soyuz

Electromagnetic Design and Simulation :: 09-12-2006 01:16 :: Soyuz :: Replies: **3** :: Views: **1975**

Can anybody explain how i can compute gain from radiation pattern? I could not obtain a satisfactory solution for this problem.
Thanks in advance
Measure Half power beam width in the E-plane and H-plane. Multiply them and invert and again multiply with 4*pi. The result will be approximate far field directivity. Now

RF, Microwave, Antennas and Optics :: 01-14-2006 09:49 :: g86 :: Replies: **6** :: Views: **2338**

How we **calculate** the gain of **antenna**?
high gain **antenna** is highy directional **antenna**?
the gain of Yaggi **antenna** is zero?

Elementary Electronic Questions :: 12-26-2005 06:34 :: mani_sohail :: Replies: **2** :: Views: **1567**

Hi all,
I am simulating a p@tch **antenna**. The S11 plot looks okay and radiation patterns too are okay but when I use the "Compute **antenna** parameters" feature ( by right clicking the infinite sphere used to **calculate** the far fields ) , it gives a radiation **efficiency** of 1.013 . How can this happen ? I am using (...)

Electromagnetic Design and Simulation :: 10-29-2004 10:53 :: svarun :: Replies: **16** :: Views: **8166**

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