Hi OM's

I want to build an distribution amplifier for video using a MAX 4137.
Maxim advises to use stripline for the in- and output.
Can someone tell me what dimensions I should use for the stripline?
(@ 75 Ohm, 350 MHz max, standard fibreglass pcb)

Thanks in advance.

73, Wim Smeets
PE1PME

wrote in message
ll.nl...
I want to build an distribution amplifier for video using a MAX 4137.
Maxim advises to use stripline for the in- and output.
Can someone tell me what dimensions I should use for the stripline?
(@ 75 Ohm, 350 MHz max, standard fibreglass pcb)

Only if you tell us your board stackup dimensions.

Various freeware programs such as TxLine
(http://www.taconic-add.com/en--downloads.php) can compute these dimensions
for you quite easily.


Thanks in advance.

73, Wim Smeets
PE1PME

1.2mm on G10 , 1,6mm thick glass epoxi board will give you a Z0 of 75
ohms from DC to daylight.
Saandy 4Z5KS

Thanks a lot Saandy

Wim pe1pme

Not so, Saandy. He said STRIPLINE, not microstrip. Now he may not know the
difference, but that is an incorrect value for stripline.

WHich is it, microstrip (open face) or stripline (sandwich)?

Jim



"Saandy , 4Z5KS" wrote in message
ups.com...
1.2mm on G10 , 1,6mm thick glass epoxi board will give you a Z0 of 75
ohms from DC to daylight.
Saandy 4Z5KS

what's the difference?
Is "open face"on a singlesided pcb and "sandwich" on a doublesided pcb?
I use a doublesided pcb with one side as a groundplane.

tnx, Wim

forgive him, not me would you care to hang a mosquito on a piece of
strip line. It's quite clear he's referring to a microstrip circuit.
which one of us is using strip lines, except in power amplifiers.

i can send you a small gem of a program, very fit for amateur use. if
your interested, write me at the email directly.
Saandy 4Z5KS

"Saandy , 4Z5KS" wrote in message
ups.com...
i can send you a small gem of a program, very fit for amateur use. if
your interested, write me at the email directly.
Saandy 4Z5KS

Or download "AppCad" free from Hewlett Packard. It does both microstrip and
stripline and as they say on Madison Avenue, "So much more".

W4ZCB

You wanna try that again in English?

Jim


"Saandy , 4Z5KS" wrote in message
oups.com...
forgive him, not me would you care to hang a mosquito on a piece of
strip line. It's quite clear he's referring to a microstrip circuit.
which one of us is using strip lines, except in power amplifiers.