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Watkins Johnson Tech-Notes Archive | 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to tell me that the hyperlink I originally had to the Watkins-Johnson Tech-Note collection on the TriQuint website is no longer valid.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. |
 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 The problem is that a lot of the old data that was uniquely useful, has not been archived on the Web.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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