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50mhz j-pole
your best bet is to use a ferrite loaded coil antenna-- Tricomme makes a 27MHz one and they are relatively easy to design-- particulalry for short range.
you can't be a script kiddie when it comes to MoM.. you need to understand Green's functions, how to set them up, Galerkins method of solution, Basis functions, etc. A good place to start is by taking a course in Electromagnetics or picking up Itoh's book--Numerical Techniques for Microwave and...
forum rf simulation program
flyhigh is right on the mark!! too often engineers become gurus at using the software tools but truly do not understand how or why the tools do what they do. I can't tell how many times some of my junior engineers come to me with simulations results that show their...
Re: Ultra-low noise LNA?
describe your board layout. if you have to much inductance in your ground leads I.e. source lead for NE710 it will oscillate. Try and have a via or two to ground directly underneath the package lead to be grounded and have the PC board 0.062 or less as a start.
Re: Ultra-low noise LNA?
describe your board layout. if you have to much inductance in your ground leads I.e. source lead for NE710 it will oscillate. Try and have a via or two to ground directly underneath the package lead to be grounded and have the PC board 0.062 or less as a start.
50 ohm transmission line
complicated answers to a simple question!!! after calibrating your cables and connectors, connect your sample and measure S11 [or S22 if its symmetrical], press the appropriate button to get the Smith Chart. The center of the Smith Chart is typically 50 Ohms-- see...
Ansoft Ensemble 8.0
:evil: hi all;
where can i download ansoft's Ensemble 8.0 version-- they no longer sell it and it is not on their website for dwonload any more. All i need is the install CD-- i have a legit license file-- i lost my install CD and Ansoft refuses to replace it since they...
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