Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes Wireless System Designer RF Stencils for Visio Shapes for Word Search RF Cafe Sitemap Advertising Facebook RF Cafe Forums Thank you for visiting RF Cafe!

4-Way Wilkinson Power Splitter - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


RF_Guy
Post subject: 4-way Wilkinson power splitter
Unread postPosted: Wed Dec 29, 2004 10:54 pm

I would like to design a four-way Wilkinson power splitter at 100 MHz. I would like to split the 1 W power in to two Wilkinson splitters, starting the design on microstrip. The four, quarter wavelength would be realised using 75-Ohm coaxial cable, and each cable would terminate in to 50 Ohm. My question is could I place the two 100-Ohm resistors at the start off each separate pair of ¼ wavelength coaxial splits on the circuit board?

Thanks. :oops:


Top


Guest
Post subject:
Unread postPosted: Mon Jan 24, 2005 6:09 pm

Can I have more info to help you. Are you saying to start with a characteristic impedance of 75 ohms and end it with 50 ohms?


Top


Rod
Post subject:
Unread postPosted: Wed Jan 26, 2005 1:16 pm

I'm sure the Zo = 50ohms. For a Wilkinson Splitter the quarte wave lines = Z = 50 * (SQRT)2.

Which is 70.7 ohms, 75 coax is usually close enough.

The 4 100ohm resistor need to be between the outputs of the spitters
to acheive good isolation.

That's my 1 cent


Top


mick
Post subject:
Unread postPosted: Sat Mar 26, 2005 9:44 am

Sorry guys, you're on the wrong track here - at 100Mhz use lumped elements , unless you like wasting money on coax cable.

I have sucessfully used lumped element wilkos at 500 MHz.



Posted  11/12/2012

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer

RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
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 Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

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

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

height-line