Watkins Johnson Tech-Notes Archive
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August 14, 2018 Update: Thanks to
Mr. Larry Jugler for providing three new Tech Notes (v11-4, v11-5, and v11-6).
February 7, 2018 Update: Thanks to Mr. 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Tech-Note collection on the TriQuint website is no longer valid.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that a lot of the old data that was uniquely useful, has not been archived on the Web.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
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- 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
- 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
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- 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
- 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
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Posted September 14, 2015
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Copyright:
1996 - 2018
Webmaster:
Kirt Blattenberger,
BSEE - KB3UON |
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RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
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and reference material while performing my work as an RF system and circuit design engineer.
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