Watkins Johnson Tech-Notes Archive
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March 12, 2019 Update: Thanks
to Chuck U. for providing new Tech Notes v10-3 and v15-2, and an improved v5-2.
August 14, 2018 Update: Thanks to Larry Jugler
for providing three new Tech Notes (v11-4, v11-5, and v11-6).
February 7, 2018 Update: Thanks to Paul Herzig,
of Raytheon, for writing to tell me that the hyperlink I originally had to the Watkins-Johnson
Tech-Note collection on the TriQuint website is no longer valid. Qorvo (formerly
RF Micro Devices, RFMD) took them down after acquiring TriQuint a few years ago.
They were all still available as of September 2015, but alas no more. Paul provided
many of the Tech-Notes in the following list for posting directly on RF Cafe. Also,
I discovered that some of the original Watkins-Johnson Communications web pages
can still be accessed via the Wayback Machine™ on the Archive.Org website:
Watkins-Johnson Tech-Notes
As of this time, you can purchase
Original WJ Tech Notes here for just a couple bucks apiece.
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 Believe
it or not, there was a time when the Internet did not exist and getting quality
information could be difficult. Perhaps more notably today, bad information is far
too easy to get online because there is no qualified peer review of content. 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.
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is that a lot of the old data that was uniquely useful, has not been archived on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. At this time there are 85 Tech-Notes.
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.
- Developing
Electron-Bombarded Semiconductor Amplifiers, v1-1
- Developments
in FML and Miniature Millimeter LNTWA Devices, v1-2
- The Laminar Flow Gun CRT, v1-3
- The Coplanar Mixer, v1-4
- YIG-Tuned Bulk GaAs Oscillators,
v1-5
- Voltage Controlled Oscillators
in Modern ECM Systems, v1-6
- X-Ray Flux from Transmission-Target
Tubes, v2-1
- Airborne Rotary DF Antenna
Systems, v2-2
- Microwave Frequency Synthesizers,
v2-3
- Ka-Band YIG-Tuned GaAs
Oscillators, v2-5
- A Modern Receiving
System Approach to EMI/EMC/TEMPEST Measurements, v2-6
- Electron-Bombarded Semiconductors,
v3-1
- Linear VCOs Linearize
Microwave Sources, v3-2
- EW Acquisition
Systems... probability of intercept and intercept time, v3-3
- Gain of Directional Antennas,
v3-4
- Gain of Directional Antennas (revised),
v3-4
- EMC/TEMPEST
Detection Systems... Test and Measurement Instrumentation, v3-5
- Signal Reception
in a Complex Radar Environment, v3-6
- Advances in Microwave Receiver
Testing, v4-2
- Design of Power Converters
for Space TWA's, v4-3
- Pulsed X-Ray Tubes Methods and Applications,
v4-4
- YIG-Tuned Integrated Devices,
v4-5
- Cavity-Controlled Oscillators, v4-6
- Mixers as Phase Detectors, v5-1
- HF Receiver Design, v5-2
- Cascading Amplifiers,
v6-1
- High Dynamic Range
Receiver Parameters, v7-2
- FSK: Signals and Demodulation, v7-5
- Mixers: Part 1, Characteristics
and Performance, v8-2
- Mixers: Part 2, Theory and Technology,
v8-3
- Digital Transmission
of Analog Signals, v8-5
- Local Oscillator
Phase Noise and its Effect on Receiver Performance, v8-6
- Time-Domain
Receivers for Pulsed Signals - Part 1, v9-6
- Time-Domain
Receivers for Pulsed Signals - Part 1, v10-1
- ELF/VLF Receiver Design - v10-3
- Suppression
in Double-Balanced Mixers, v10-4
- Predicting
Intermodulation, v10-4
- PSK Demodulation (Part 1), v11-2
- PSK Demodulation (Part 2), v11-2
- Competitive Receiver Technologies,
v11-4
- RF Signal Processing
Before the Receiver, v11-5
-
Software
Design of Microprocessor-Controlled Receivers, Part 1, v11-6
- Software Design
of Microprocessor-Controlled Receivers, Part 2, v12-1
- Design
Considerations for Automated RF Test Equipment, v12-2
- Image-Reject and Single-Sideband Mixers,
v12-3
- Modulation
Recognition for Automated Surveillance Systems, v12-4
- High Probability
of Intercept Receivers in EW Environments, v12-4
-
Aircraft
Detection and Identification Using Passive Electronic Support Measures, v12-5
- System Control of VHF/UHF
Receivers, v12-6
- Parallel Testing
of Magnetic Bubble Memories, v13-1
- Developments
in Receiving System Integration Techniques, v13-2
- Time Tracking
of High PRF Signals with Bit-Slice Microprocessors, v13-3
- Dual Mixers, v13-4
- Wideband YIG-Tuned Oscillators,
v13-5
- Receiver Dynamic Range: Part 1, v14-1
- Receiver Dynamic Range: Part 2, v14-2
- MIL-Specification Mixers, v15-2
- Automated
Noise-Parameter Measurements Using a Microwave Probe, v16-1
- Rapid Broadband Signal
Acquisition, v16-2
- Cascading Amplifiers,
v16-3
- Frequency Discriminators, v16-4
- Design Considerations
for Miniaturized Receivers, v16-5
- Millimeter-Wave Block Converters,
v16-6
- Mixers in Microwave Systems (Part 1),
v17-1
- Mixers in Microwave Systems (Part 2),
v17-2
- Surface-Mount Component
Technology, v17-3
- Fiber Optics for Receivers, v17-4
- Combline Filters
for Microwave and Millimeter-Wave Frequencies, Part 1, v17-5
- Combline Filters
for Microwave and Millimeter-Wave Frequencies, Part 2, v17-6
- Surface-Mount Devices
Reflow Soldering, v18-1
- Designing Fast-Switching
PLL Synthesizers, v18-2
-
Atmospheric Pressure vs. Low Pressure Chemical Vapor Deposition, v18-3
- GaAs MMIC Voltage-Controlled
Phase Shifter, v18-4
- Mixers Application Information
Posted September 14, 2015
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Webmaster:
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BSEE - KB3UON |
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