Custom Search
Over 9,000 pages indexed!
Your Host
Click here to read about RF CafeKirt
Blattenberger
... single-handedly
redefining what an
engineering website should be.

View the YouTube RF Cafe Intro Video Carpe Diem!
(Seize the Day!)

5CCG (5th MOB):
My USAF radar shop

Hobby & Fun

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding business website - lots of info

Doggy Dynasty:
My son-in-law's dog training business
•−•  ••−•    −•−•  •−  ••−•  •
RF Cafe Morse Code >Hear It<
Job Board
About RF Cafe©
RF Cafe E-Mail
Product & Service
Directory		 Engineering
Jobs
Personally Selected
Manufacturers		 Employers Only
(no recruiters)
RF CIRCUIT DESIGN BY ADS - RF Cafe Forums
Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

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


david1986
 Post subject: RF CIRCUIT DESIGN BY ADS
Posted: Sat Feb 13, 2010 12:47 am 
 
Lieutenant

Joined: Sat Feb 13, 2010 12:16 am
Posts: 1
Hi everybody!

Excuse me, I'm studding MSC,I looking for procedure design The RF amplifier work in 34GHz, i know i should make matching for cct. in s-parameter but idont know how i do bias cct without effect the matching cct.


 
   
 
fred47
 Post subject: Re: RF CIRCUIT DESIGN BY ADS
Posted: Sun Feb 14, 2010 8:25 pm 
 
General
User avatar

Joined: Wed Feb 22, 2006 3:51 pm
Posts: 119
David,
At 34 GHz, there may be unavoidable interaction between the impedance matching circuit and the bias circuit - especially if you're trying to get a broad-band amplifier.

That said, a quarter-wave line (acting as a transformer) from the bias source to the active device may help - but pretty much all passive devices will be composites. By which I mean, there will be unavoidable capacitance to your resistors, unavoidable resistance all over the place in your transmission lines and resonators. Your best bet is just to make allowances.

Good Luck!





Posted  11/12/2012

RF Cafe Software

RF Cascade Workbook
 RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
RF system analysis including
frequency conversion & filters

Smith Chart™ for Excel
Smith Chart™ for Visio
RF & EE Symbols Word
RF Stencils for Visio
A Disruptive Web Presence™

Custom Search
Over 9,000 pages indexed!
 Read About RF Cafe
Webmaster: Kirt Blattenberger
KB3UON

Product & Service Directory
Personally Selected Manufacturers

 RF Cafe T-Shirts & Mugs
Calculator Workbook
RF Workbench
Please Support My Advertisers