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!
Lotus Communication Systems Modular RF Component Building Blocks - RF Cafe

PCB detector circuit - 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: PCB detector circuit

Unread postPosted: Mon Sep 06, 2004 5:47 am



Joined: Mon Sep 06, 2004 5:43 am

Posts: 4

I am new to Rf design, and have to design PCB layout for a detector circuit

using a voltage doubler configuration.

I am simulating using MIcrowave Office and simulating my matching circuit (double open stub).

1) I'm a bit stumped with the results of my simulation in terms of S parameters. They dont seem to change much, even when I remove or place a 100pF capacitor in parallel with load.

2) Am unsure about designing my microstrip matching element in PROtel. Any tips on this?





Post subject:

Unread postPosted: Wed Sep 08, 2004 3:32 pm

We're going to need a little more information.

- What frequency range is the detector working in?

- What is the impedance of the detector?

- What kind of substrate are you using?

- Are you using S-parameter files for the discrete components being modeled, or mathematical models from the simulator?

All these can explain the small change with or without the 100 pF capacitor.

Regarding impedance matching, MWO should provide libraries of impedance transformer topologies, then the optimizer should take care of tuning.



Post subject: detector circuit

Unread postPosted: Tue Sep 14, 2004 11:43 pm

I am using a voltage doubler configuration using Schottky HSMS 8202 from Agilent. I am planning to use it at 900MHz

Im planning to use two different materials, FR4 and ROdgers duroid 5880, Er=2.2

Im using MWOffice's SPice model of diode to model 8202 schottky, using Agilent supplied Spice parameters. Is this sufficient to model the diodes in MWOffice, or should I be doing more?

I have been using the optimizer to vary the length of the stubs to obtain the best S11 and S22 values from linear simulator. Is this appropriate?

Any help would be great as I am a complete newbie to this area and a desperate undergrad

Posted  11/12/2012

Anritsu Test Equipment - RF Cafe
KR Electronics (RF Filters) - RF Cafe
Innovative Power Products Passive RF Products - RF Cafe
Exodus Advanced Communications Best in Class RF Amplifier SSPAs
Innovative Power Products Passive RF Products - 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: