[SI-LIST] Re: Capacitor S parameter
- From: Ray Anderson <ray.anderson@xxxxxxxxxx>
- To: "sukumarm@xxxxxxxxxxx" <sukumarm@xxxxxxxxxxx>, "olaney@xxxxxxxxx" <olaney@xxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>, "weirsi@xxxxxxxxxx" <weirsi@xxxxxxxxxx>
- Date: Fri, 10 Jan 2014 18:29:35 +0000
Sukumar-
He just plugged your 0.2pF device capacitance and the desired frequency into
the following EE101 equation. The Touchstone .s2p data didn't even come into
play.
Xc = 1/(2*PI*F*C)
-Ray Anderson
Xilinx Inc.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Sukumar
Sent: Friday, January 10, 2014 9:59 AM
To: olaney@xxxxxxxxx; si-list@xxxxxxxxxxxxx; weirsi@xxxxxxxxxx
Subject: [SI-LIST] Re: Capacitor S parameter
Hi Orin and Steve,
Thanks for your response.
My RF signal impedance is 50 ohm. RF signals are routed in the top layer alone.
Signal topology is,
DUT-trace- capacitor-trace-SMA. Capacitor is series connection with trace.
And capacitor value is fixed by my customer. I try to convey my customer.
Could you tell me, how you calculated capacitor impedance through .s2p?
Thanks,
Sukumar
Orin Laney <olaney@xxxxxxxxx> wrote: That's a 0.2 pF capacitor. Z at 5 GHz
is 159 ohms. Perhaps you intended to use a larger value? Such small caps are
more often used for shunt tuning. Orin -----Original Message----- From:
si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of
Sukumar Sent: Friday, January 10, 2014 12:58 AM To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Capacitor S parameter Hi Experts, Currently I'm doing a
RF Signal S-parameter simulation. One series capacitor is connected with
RFSignal trace near the DUT side. RF Signal operating frequency is 5GHz. I
downloaded s parameter(.s2p) model from manufacturer website (
http://psearch.murata.com/capacitor/product/GRM1555C1HR20BA01%23.html[1][1]
)Capacitor part no:GRM1555C1HR20BA01 The insertion loss (S21)is very high up to
10 GHz. Is this capacitor support 5GHz or this capacitor allows only above10GHz
Signal? How can i choose the capacitor which supports 5GHz?
Looking forward for SI Experts answers. Thanks, Sukumar --- Links --- 1
http://psearch.murata.com/capacitor/product/GRM1555C1HR20BA01%23.html[2]
This email and any attachments are intended for the sole use of the named
recipient(s) and contain(s) confidential information that may be proprietary,
privileged or copyrighted under applicable law. If you are not the intended
recipient, do not read, copy, or forward this email message or any attachments.
Delete this email message and any attachments immediately.
------------------------------------------------------------------
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 forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
