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## Calculate Antenna Efficiency |

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antenna efficiency , efficiency and antenna , cst antenna efficiency , efficiency antenna cst

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

Hi everyone,
I am currently designing a matching network with DTCs (digitally tunable capacitors) and I am struggling to properly **calculate** the corresponding S21. Correct me if I am wrong, but it seems to me that it is not correct to simulate the matching network S21 in a 50 Ohm environment while the **antenna** input impedance is different from 50

RF, Microwave, Antennas and Optics :: 06-07-2016 09:25 :: Dirtyfighter :: Replies: **2** :: Views: **454**

Someone, please help me.
How to **calculate** the power available at the **antenna** material RLSA?
I need your answer.
Thank you

RF, Microwave, Antennas and Optics :: 11-30-2015 09:14 :: rezky2015 :: Replies: **3** :: Views: **539**

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 21:01 :: FvM :: Replies: **16** :: Views: **2256**

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 10:41 :: john54 :: Replies: **0** :: Views: **725**

Are you trying to **calculate** **antenna** apature **efficiency**?

RF, Microwave, Antennas and Optics :: 05-28-2012 12:11 :: OunaLypse :: Replies: **2** :: Views: **1148**

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 :: 02-16-2009 01:32 :: shahid78 :: Replies: **0** :: Views: **1604**

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 08:31 :: kyg :: Replies: **5** :: Views: **2874**

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 :: 01-24-2008 01:06 :: harishbigh :: Replies: **1** :: Views: **3008**

There are a number of ways to estimate the gain of an **antenna**.
Here is one: G dbi = 10 log10 ( 4 Π (effective aperture area) / λ?) * **efficiency**
The distance on the surface of the earth may be **calculate**d using spherical trig. Look up the details is Bowditch ( a bible in the boating world).
Added after 7 m

RF, Microwave, Antennas and Optics :: 07-30-2007 05:32 :: Azulykit :: Replies: **2** :: Views: **1752**

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 21:24 :: pass1 :: Replies: **2** :: Views: **6401**

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 :: 09-14-2006 00:41 :: Soyuz :: Replies: **2** :: Views: **1782**

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 05:16 :: Soyuz :: Replies: **3** :: Views: **2266**

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 14:49 :: g86 :: Replies: **6** :: Views: **3443**

The gain of an **antenna** takes account of the **antenna** **efficiency** as well as its directivity. The formal definition of gain in any direction is "power density radiated in that direction divided by the power density which would have been radiated at that direction by a lossless (perfect) isotropic radiator having the same total accepted input (...)

Elementary Electronic Questions :: 12-26-2005 13:06 :: albert22 :: Replies: **2** :: Views: **1778**

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 14:53 :: svarun :: Replies: **16** :: Views: **10845**

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