Hi,
we would like to make some tests for HDTV, and we need to set up a short range transmission (max 5m). I would like to know if I can use a simple VHF/UHF dipole antenna, to transmit and another dipole to receive? If not, what antenna should I use?
Thank you for your help!
Thomas K...
Hi,
I would like to build a bi-band GSM antenna (900-1800) for external conections, but I can't find homebrew projects on the web. Can someone help?
The antenna can be omnidirrectional or dirrectional, it doesn't matters.
Thanks
Thomas K.
http://www.emcrf.eng.br
ICQ#282786426
Hi,
I would like to transform a passive 2.45 Ghz patch antena into an active one. Does someone has some schematics, layout or advice to give me to build a low noise amplifier?
The antena is made for short range wireless (10-15 meters).
Thanks,
Thomas K.
Thomas K.
http://www.emcrf.eng.br...
Hi,
I would like to transform a passive 2.45 Ghz patch antena into an active one. Does someone has some schematics, layout or advice to give me?
The antena is made for short range wireless (10-15 meters).
Thanks,
Thomas K.
http://www.emcrf.eng.br
ICQ#282786426
Hi,
I wonder how I can simply find the carracteristic impedance of a coax cable ?
I wanted to calculate it knowing that Z0= SQRT(L/C) with SQRT=> square root ; L,C: lumped elements...
But I've another problem... it's that I don't know the dielectric material so I can't find Epsilon_r !!
Can...
Hi all,
I would like to know if microstrip antennas needs balun feeding ? If yes how to implement one ?
Thks,
Thomas K.
http://www.genius.org.br
http://www.thomask.fr.st
Hi all !
I would like to know if someone as some experiencies with Sonnet Suite software ? Is it easy to learn/use ? Is it accurate ? What about PCB radiations simulations ?
My purpose is to use it for microstrip antennas, PCB radiations and planar analysis...
Thanks,
[pc3] Thomas K...
Hi all !
I would like to know if someone as some experiencies with Sonnet Suite software ? Is it easy to learn/use ? Is it accurate ? What about PCB radiations simulations ?
My purpose is to use it for microstrip antennas, PCB radiations and planar analysis...
Thanks,
[pc3]
Thomas K.
Hi all,
I would like to know if someone has some experiencies with radiations simulations at the PCB level.
I saw that Sonnet could make this kind of simulations importing a layout and simulate close fields...
I would like to have yours experiencies in this area...
Thanks, Thomas K...
Hi all,
I used the article "Design of rectangular Microstrip Patch antennas for the 2.4 Ghz band" to design my own antenna, but as I don't have a lab at disposition to test this antenna, I desided to make a simulation of the antenna model from the paper and then to simulate "my...
[COLOR=blue]I would like to have some informations about superstrate materials that can be used to improve the gain of patch antennas... where can I find some infos ? Can I have some advices ?? Thomas K.
http://www.genius.org.br
http://www.thomask.fr.st
[red]Anyone can give me simples approximatives formulas to determine the diameter of circular disk or ring antennas ?
[reading] Thomas K.
http://www.genius.org.br
http://www.thomask.fr.st
Hi all,
I would like to find some papers explaining how simply determine (calculate)the feed point on a rectangular patch to get natching with a 50 Ohm coaxial.
I don't have any analyser to perform measurement...
I just have a formula giving the variation of input impedance as a function of...
