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 Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Forums Magazine USAF Radr Shop Sponsor RF Cafe RF Electronics Symbols for Visio RF Electronics Symbols for Office Word RF Electronics Stencils for Visio Thank you for visiting RF Cafe!
Windfreak Technologies Frequency Synthesizers - RF Cafe
TotalTemp Technologies (Thermal Platforms) - 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 typing 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

RF Electronics Shapes, Stencils for Office, Visio by RF Cafe

Harmonic measurements - 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. 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

-- Antennas

-- CAE, CAD, & Software

-- Circuits & Components

-- Employment & Interviews

-- Systems

-- Test & Measurement

jabb
 Post subject: Harmonic measurements
Posted: Tue Oct 03, 2006 11:26 pm 
 
Captain

Joined: Tue Apr 18, 2006 10:40 pm

Posts: 11

hi...i've this spectrum analyzer that goes up to 26.5 GHz. my DUT runs at 18 GHz; if I want to check the second (36 GHz) or third harmonic (54 GHz) can that be done using the spectrum analyzer or because since it goes up to 26.5 GHz, it won't sense the signal at those harmonics?

is the only other thing possible is to use mixer to down convert?


 
   
 
RFTEJerry
 Post subject:
Posted: Wed Oct 04, 2006 12:05 pm 
 
Captain
User avatar

Joined: Thu Apr 13, 2006 9:53 am

Posts: 17

Location: Florida

Hello jabb,

Your spectrum analyzer will not be able to measure your harmonics directly because they are out of the tuning range of the spec-ana. You will need to add an external down converter between your signal and the spec-ana. Many spec-anas can output their LO to external mixers to downconvert the signal to the range of the spec-ana and then compensate for the down conversion so you don't have to do the math.

I have down this with several HP (Agilent) spec-anas in my career. The reason the spec-anas LO is used to keep everything in "sync" with the internal sweep of the spec-ana.

Good luck,

RFTEjerry.

Posted  11/12/2012

Triad RF Systems Amplifiers - RF Cafe

RF Cafe Visitor Comments on News, Articles, System, Design, Components, etc.

Please e-mail your comment to me (Kirt B.), and I will post it here for you - no computers involved!

1 - Your participation will be greatly appreciated. - Kirt B.

Innovative Power Products Passive RF Products - 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