[SI-LIST] Impedance of microstrip with/without GND plane
- From: Bob Patel <whizplayer@xxxxxxxxx>
- To: si_list <si-list@xxxxxxxxxxxxx>
- Date: Mon, 8 Apr 2002 18:51:31 -0700 (PDT)
Hi! In one of my application I want to route
microstrip trace of length 250mil from a SMA (end
launch) to a surface mount component. In my stackup
the GND plane is 5 mil away from TOP. I used a
microstrip calculator and if I keep the width 8 mil I
can achieve 50ohms on 1oz Cu.
So, the question I have is for an end launch SMA with
50ohm trace to a surface mount component I should not
see much capacitive dip except a slight at the pad of
pin to trace connection. ANy suggestion to improve
this?
Also, on the vertical mount any suggestion for the
transistion from pin to trace. Here also I have
microstrip trace.
ANy inputs will be helpful.
Also, I have done the usual things like removal of
unused pads, increasing antipad etc.
Thanks
Bob
__________________________________________________
Do You Yahoo!?
Yahoo! Tax Center - online filing with TurboTax
http://taxes.yahoo.com/
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List archives are viewable at:
//www.freelists.org/archives/si-list
or at our remote archives:
http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
- » [SI-LIST] Impedance of microstrip with/without GND plane
