Recent content by vaka85

last step please :)

Hi! Here are the 2 layouts: (dimensions are not real and connector picture is only to understand where it is the sma connector) sma short-circuited: http://img682.imageshack.us/img682/8020/smacc.jpg sma open: http://img227.imageshack.us/img227/6100/smaopen.jpg Whant do you...

Ok, I've understand. Next days I'll try to make a pcb, then I'll show the result. Thank you very very much!

really a few hundred?!? :bugeye: there isn't a reason why I use a resistor instead an open line.. however if you say that the resistor behavior is that little value, so I can left the line open. In this case, how far must be the open line from the ground plane? the value G (gap from line to...

I've tried some variations on txline. here is the result: http://img230.imageshack.us/img230/8035/immaginevf.th.jpg What's your opinion? (substrate fr4 wasn't in the list, so I've chosen another one, but with correct dielectric constant). One more thing (maybe very stupid but very...

first of all: so many thanks! :) I've don't understood exactly your trick, however tomorrow I'll study it better (now in Italy it's 9 pm ---> tired ..) I'll make a test pcb and I'll show to you... FR4 isn't great but, unfortunately, at the moment is the only material available... The...

sorry, you're right, I've forgotten to say some things... 1. I don't have to do a simulation. 2. I have to design the pcb from the beginning. I have FR4 as substrate, 2 SMA connectors, and one SMD resistor. That's all. The project specifics are: - About 4.5 GHz ( Not so strictly...

Hi all, I don't know if it's the right section in the forum, but here is my problem. I have to design a small pcb working at about 5 GHz, and I don't know how to start exactly... It's very simple, 2 sma connectors and 1 resistor. Here is the schematic...