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folded inverted conformal antenna
hi I was wondering if anyone knew of any had any formulas or if the properties of a PIFA antenna can be appllied to this, but for this type, itdoes not have a ground plane underneath, any insight on this type of antenna.
The only thing I have been able to...
Does anyone have any documentation on bluettoth compatibility testing for mobile phones. I am more interested on how bluetooth devices are tested with mobile applications and how they determine pass/fail. Any documentation would be great. I checked out bluetooth org site but you have to be a...
high Dielectric antenna
I have found some papers and a description on this topic, I am wondering if anyone has had experience for this use for mobile phone application. Any help/comments would be appreciated.
how to build anechoic box
vfone:
You hit it on the spot, I am in need to do quick/rough testing of antenna for mobile phones(dualband/triband), and not EMI. I will read the links you sent me, any other advice would be greatful.
build an anechoic chamber
Yah, an anechoic chamber I have used and it is quite expensive. This is mainly needed for cell phone use so it would have to cover at least 800MHz to 3GHz(UMTS/WIFI now in phones)any one day and saw that they had a box the size of a regular office desk and used that...
homemade anechoic chamber
I am looking to learn on how to construct a small near field chamber to measure antenna performance since we do not have access/budget to use/buy an anechoic chamber. I have not been able to find much about contructing this online, any help would be appreciated
I am trying to investigate on different types of antennas that would help compatibility for mobile handsets. Are there certain antenna types that are more suited to "cancel out" radiation patterns so that in a given area(ear for this case) that the pattern is null but still have a semi-omni...
Re: problem about HFSS
I hve had the same error before and I have tried the "unite function and it has fixed some things but in some cases Istill got the same error. I contacted the tech support before about this issue and he mentioned to me to change the adaptive freq. to your resonant...
I am trying to layout a pcb board for a test board and I have been trying to caluclate the width of a trace to make sure it is 50 ohms. I am an RF engineer and when I did my calculations I end up getting 2.54mm (milimeters) or (0.111 inches). Seems a little big but below is my parameters and...
I have tried to follow the help files on drawing a helix but to no avail I am not able to do this, sorry for the basic question, it would help if anyone has an example file for a generic helical antenna, I just want to know how to do this using HFSSv 9.0 or above.
Re: Help , HFSS 9.0 and above drawing non rectangle 3 D obje
See attached jpeg. IT is a 2-D triangle with height=0 that I made by drawing a polyline, and then followed your instructions on to "cover face, but I want to make a 3-D model for example a height of 2
I have been having a hard time to draw anything 3D that is not a standard shape. Like for example drawing a three D triangle. Ican make a 3D line but not sure on how to change that to a 3D object. I have read help files but no avail on that end. I tried using the planes to cut out either...
Re: Antenna design tools
I am trying to design an internal antenna for Cellular phone applications, I am evaluating ans@ft HF$$ right now but I think with the price we probably cannot afford this, is there any other "appropriate" design tool to handle this, I have used Momentum for a couple of...
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