Windfreak Technologies
Berkeley Nucleonics Academy RF Boot Camp - RF Cafe
 

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while tying up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com

Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes App Notes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Homepage Thank you for visiting RF Cafe!
everythingRF RF & Microwave Parts Database (h2) - RF Cafe

A simple question regarding blocking capacitors - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. If the folks at phpBB would release a version with integrated sign-in from the major social media platforms, I would resurrect the RF Cafe Forums, but until then it is probably not worth the effort. Regardless, there are still lots of great posts in the archive that ware worth looking at.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

guest
Post subject: A simple question regarding blocking capacitors
Unread postPosted: Mon Jul 05, 2004 1:07 pm

during SpectreRF simulation, how much value should be assigned to the blocking capacitors on the input and output ports? Say, if I let the capacitor on the input be 1pF, then I can get one result, but if I change it to 1nF, the result will be another story. How to decide the proper values to use? Thanks


Top


Buding
Post subject:
Unread postPosted: Tue Jul 06, 2004 9:27 am

What frequency are You using. In simulation You can put as high capacitance as You wich. Just to achieve blocking effect. In real life You have to take into account other thing like resonaces, losses, parsitics and many more.


Top


Buding
Post subject:
Unread postPosted: Tue Jul 06, 2004 9:29 am

What frequency are You using. In simulation You can put as high capacitance as You wich. Just to achieve blocking effect. In real life You have to take into account other thing like resonaces, losses, parsitics and many more.


Top


DW
Post subject:
Unread postPosted: Sun Jul 11, 2004 6:35 pm

another way to think about blocking capacitors is as single pole high pass filters. You want your response to be well into the passband if at all possible.

BR,
DW


Top


Jeanalmira
Post subject:
Unread postPosted: Tue Mar 15, 2005 5:25 am

hi,

just want to add that should be careful in using large capacitance values for blocking cap, as higher capacitance values, has lower resonance frequency, so that it might be inductance instead at frequency higher than f resonance :wink:

Regards,
Jean







Posted  11/12/2012
Copper Mountain Technologies - RF Cafe
Werbel Microwave - RF Cafe
Axiom Test Equipment - RF Cafe
 

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free