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Watkins Johnson Tech-Notes Archive

RF Cafe - Watkins-Johnson Tech-Notes, Cascadable Amplifiers vol. 6
Watkins-Johnson Tech Note
Cascadable Amplifiers vol. 6
RF Cafe - Watkins-Johnson Tech-Notes, Cascadable Amplifiers vol. 6
Watkins-Johnson Tech Note
Cascadable Amplifiers vol. 16
Believe it or not, there was a time when the Internet did not exist, and getting quality information (or perhaps more notably, bad information) was not so easy. Waaaaayyyyyy back in the 1970s and 1980s when I was new to the electronics design world, offices, cubicles, laboratories, company technical libraries, even hallways, were piled high with reference books, magazines, component books, applications notes, datasheets, white papers, and every other form of information that might be useful or someone probably found useful at some time in the past.

Now, of course, the preferred source for information is the Internet, particularly from trusted sources like universities, book publishers, RF Cafe, etc. The problem is that a lot of the old data that was uniquely useful, has not been archived on the Web.

Such is the case with an exceptionally useful set of Tech-Notes that appeared in the Watkins Johnson parts catalogs of yore (circa 1980). It is quite difficult to locate those notes, especially since websites keep moving the files around, breaking links. So, as a matter of public service, I am making them available here. All copyrights are hereby acknowledged.

Also, don't forget the classic datasheet for the Watkins-Johnson WJ-G1/SMG1 Voltage-Controlled Attenuator datasheet with the Phase vs. VCTL vs. Frequency vs. Phase of the Moon Chart.

RF Cafe - Watkins-Johnson Tech-Notes, Signal Recognition in a Complex Radar Environment
Watkins-Johnson Tech Note 
Signal Recognition in a Complex Radar Environment

RF Cafe - Watkins-Johnson Tech-Notes, Mixers in Microwave Systems part 1
Watkins-Johnson Tech Note
Mixers in Microwave Systems part 1

RF Cafe - Watkins-Johnson Tech-Notes, Mixers in Microwave Systems part 2
Watkins-Johnson Tech Note
Mixers in Microwave Systems part 2

RF Cafe - Watkins-Johnson Tech-Notes, Receiver Dynamic Range part 1
Watkins-Johnson Tech Note
Receiver Dynamic Range part 1

RF Cafe - Watkins-Johnson Tech-Notes, Receiver Dynamic Range part 2
Watkins-Johnson Tech Note
Receiver Dynamic Range part 2 
RF Cafe - Watkins-Johnson Tech-Notes, Gain of Directional Antennas
Watkins-Johnson Tech Note
Gain of Directional Antennas vol. 3 

RF Cafe - Watkins-Johnson Tech-Notes, HF Receiver Design vol. 5
Watkins-Johnson Tech Note
HF Receiver Design vol. 5

I just discovered that TriQuint has all of the Tech-Notes available for download on their website. If they do not change the hyperlink, you can access the table of contents here:
Watkins-Johnson Tech-Notes 

RF Cafe - Watkins-Johnson Tech-Notes, Digital Ttransmission of Analog Signals
Watkins-Johnson Tech Note
Digital Transmission of Analog Signals

RF Cafe - Watkins-Johnson Tech-Notes, Time-Domain Receivers for Pulsed Signals part 1
Watkins-Johnson Tech Note 
Time-Domain Receivers for Pulsed Signals part 1

RF Cafe - Watkins-Johnson Tech-Notes, Time-Domain Receivers for Pulsed Signals part 2
Watkins-Johnson Tech Note
Time-Domain Receivers for Pulsed Signals part 2

RF Cafe - Watkins-Johnson Tech-Notes, High Probability of Intercept Receivers
Watkins-Johnson Tech Note 
High Probability of Intercept Receivers

RF Cafe - Watkins-Johnson Tech-Notes, Image-Reject and Single Sideband Mixers
Watkins-Johnson Tech Note
Image-Reject and Single Sideband Mixers

RF Cafe - Watkins-Johnson Tech-Notes, Mixers As Phase Detectors
Watkins-Johnson Tech Note
Mixers As Phase Detectors 



RF Cafe - Watkins-Johnson Tech-Notes, VCO and PLL Design
Watkins-Johnson Tech Note
VCO and PLL Design

 

 

Posted September 14, 2015

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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 ...

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