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 Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Forums Magazine Sponsor RF Cafe RF Electronics Symbols for Visio RF Electronics Symbols for Office Word RF Electronics Stencils for Visio Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Anritsu Alliance Test Equipment Amplifier Solutions Anatech Electronics Axiom Test Equipment Berkeley Nucleonics Bittele Centric RF Conduct RF Copper Mountain Technologies Empower RF everything RF Exodus Advanced Communications Innovative Power Products ISOTEC KR Filters Lotus Systems PCB Directory Rigol RF Superstore San Francisco Circuits Reactel RFCT TotalTemp Technologies Triad RF Systems Windfreak Technologies Withwave LadyBug Technologies Wireless Telecom Group Sponsorship Rates RF Cafe Software Resources Vintage Magazines Thank you for visiting RF Cafe!
Windfreak Technologies Frequency Synthesizers - RF Cafe

mixer selection - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2010 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. 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.

NOTICE: The original RF Cafe Forum is available again for reading, and the new RF Cafe Blog is an active board.

-- Amateur Radio

-- Anecdotes, Gripes, & Humor

-- Antennas

-- CAE, CAD, & Software

-- Circuits & Components

-- Employment & Interviews

-- Miscellany

-- Swap Shop

-- Systems

-- Test & Measurement

-- Webmaster


Post subject: Ansoft Designer Posted: Thu Dec 22, 2005 9:07 am


Joined: Fri Aug 05, 2005 2:56 am

Posts: 1

I'm a newbie in RF and I'm just starting to lear using ADS and Ansoft Designer. I do my labworks in ADS and at home I use Ansoft Designer. Now,

I need to simulate a 50ohm microstrip tx line matched to both source and load. How do I proceed?? Help!!



Post subject: Posted: Thu Dec 22, 2005 9:54 am

There are standard library components for a 50 ohm transmission line as well as for a source and load. It is as simple as placing them in your circuit. You can also put down models for microstrip, stripline, etc, and adjust trace width, length, metal thickness, dielectric constant, etc. If you use that approach, the line will only be exactly 50 + j0 ohms for one frequency (and its harmonics).

If you are looking for a program to calculate the transmission line parameters, then try TXLine, from AWR (free).


Dan R

Post subject: Posted: Thu Dec 22, 2005 10:11 am

The hardest part about ADS and Designer is actually simulating the circuit. Finding and connecting the parts is not a problem, but then you have to set up your analysis, which can be tricky if you have never used the software before. I have more experience using ADS and I believe the best way to learn how to set up your analysis is to do the tutorial. Check out their help file.

A quick simulation in ADS:

An S-parameter simulation is the most straightforward. To do a two-port solution, simple grab two of the terminal boxes (under Simulation->S_Param). Then grab the S P part and put it in your schematic. This tells the solver what frequencies to sweep for your solution and what parameters to calculate (S parameters by default). Now add your circuit parts (from the component pull down menu) and connect them to the terminals. Don't forget to ground your terminals if you're using single-ended ports.

Now go to Simulate->Simulate (or click the Gear button) and the simulation will run or give you an error if the setup is wrong. Once done, it will pop up a Data Display window. From here you can drag and drop graphs, tables, smith charts, etc... and see your results. ADS Data Display is a whole other beast, but the basics of it are pretty straightforward (more so than ADS Schematic).

Again, I'd suggest going through some of the ADS examples in the help file. Hopefully I didn't just confuse you


Posted  11/12/2012

Anritsu Test Equipment - RF Cafe
Axiom Test Equipment - RF Cafe
Anatech Electronics (RF Filters) - RF Cafe
RIGOL Technologies (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


About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024


    Kirt Blattenberger,


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: