Technical Publications
Technical Papers on Advanced Signal Processing for Broadband Wireless Communications:
Averaging and Cancellation Effect of High-Order Nonlinearity of a Power Amplifier
Indoor Propagation Issues for Wireless LANs (As Published in RF Design September 2002 Issue)
An Adaptive Algorithm for Antenna Array Low-Rank Processing in Cellular TDMA Base Stations
Fast Adaptive Super-Exponential Multistage Beamforming for Cellular Base-Station Transceivers with Antenna Arrays
Blind Adaptive Detection of DS/CDMA Signals on Time-Varying Multipath Channels with Antenna Arrays Using High-Order Statistics
Wavelet-Based Separating Kernels for Array Processing of Cellular DS/CDMA Signals in Fast Fading
Complex Scaled Tangent Rotations (CSTAR) for Fast Space–Time Adaptive Equalization of Wireless TDMA
Optimally Regularized Channel Tracking Techniques for Sequence Estimation Based on Cross-Validated Subspace Signal Processing
On MMSE Real-Time Antenna Array Processing Using Fourth-Order Statistics in the U.S. Cellular TDMA System
On the Necessity of High Front-ends in Broadband Performance RF Wireless Access Employing Multicarrier Modulations (OFDM)
Multipoint Multichannel Distribution Service at 155 Mbit/sec in 4.6 MHz: an Experimental Prototype Based on Wavefield Modeling
Space-Time Open Architectures for Broadband Wireless Data Communications: Above the Log2(l+SNR) Bit/See/Hz Barrier
On Robust Suppression of Third-Order Intermodulation Terms in Small-Signal Bipolar Amplifiers
Near-Carrier Oscillator Spectrum due to Flicker and White Noise
Image-Reject and Single-Sideband Mixers
Optimization of Tunable Oscillators with AM to FM Conversion for Near-Carrier Phase Noise
Watkins-Johnson Company published WJ Tech-Notes on a variety of topics relevant to microwave communications for almost 20 years, starting in the mid-1970's. While some of these notes have become seriously out of date, many retain their relevance, since the fundamentals of physics and electrical engineering haven't changed. We have converted those Notes which are still of interest into electronic form and provide them here as a service to the Wireless Communications community. They are categorized by volume (vol. 1-18).
Volume 1
Developing the Electron Bombarded Semiconductor-an-On-Target Amplifier
Developments in FML and Miniature Millimeter LNTWA Devices
The Laminar Flow Gun CRT - New Concepts for the Eletron Beam
The Coplanar Mixer
YIG-tuned bulk GaAs Oscillators
Voltage Controlled
Volume 2
X-Ray Flux from Transmission-Target Tubes
Airborne Rotary DF Antenna Systems
Microwave Frequency Synthesizers - Accuracy and Purity
High Reliability Intercept Receivers in EW Environments
Ka-band YIG-tuned GaAs Oscillators
A Modern Receiving System Approach to EMI/EMC/TEMPEST Measurements
Volume 3
Electron Bombarded Semiconductors
Linear VCO's Linearize Microwave Sources
EW Acquisition Systems...Probability of Intecept and Intercept Time
Gain of Directional Antennas
EMC/TEMPEST Detection Systems...Test & Measurement Instrumentation
Signal Recognition in a Complex Radar Environment
Volume 4
Advances in Microwave Receiver Testing
Design of Power Converters for Space TWTA's
Pulsed X-Ray Tubes
YIG-Tuned Integrated Devices
Cavity-Controlled Oscillators
Volume 5
Mixers as Phase Detectors
HF Receiver Design
Transportation Lag in Phase-Locked Loops
Hyberabrupt Varactor-Tuned Oscillators
Solid-State Limiting Amplifiers
Miniature X-band Amplifiers and Down Converters
Volume 6
Cascade Amplifiers
Advances in CRT Technology Part 1
Advances in CRT Technology Part 2
Antenna Polarization
YIG-Tuned FET Oscillator Design 8-18 GHz
Signals Typical to the HF Spectrum
Volume 7
Hybridization of Competitive Receivers
High Dynamic Range Receiver Parameters
Digitally Controlled VHF/UHF Receiver Design
Ultralow-Noise Source for Noise Analyzer Calibration
FSK: Signals and Demodulation
Specifiying High-rel Mixers and Amplifiers
Volume 8
UHF/VHF Direction Finding
Mixers: Part 1; Characteristics and Performance
Mixers: Part 2; Theogy and Technology
Antenna Pedestals for Microwave
Digital Transmission of Analog Signals
Local Oscillator Phase Noise and it's Effects on Receiver Performance
Volume 9
Improving System and Environmental DF Accuracy
DF System Calibration and Correction Techniques
Digital Signal Processing for Multi-channel Receiving Systems
Design of Automatic Receiver Test Systems
18 to 60 GHz Signal Generation from Existing Sources
Time-Domain Receivers for Pulsed Signals - Part 1
Volume 10
Time-Domain Receivers for Pulsed Signals - Part 2
Frequency Memory Loops
ELF/VLF Receiver Design
Predicting Intermodulation Suppression in Double-Balanced Mixers
Low-Power VHF/UHF Synthesizer Design
Microwave Sampling for Ultra-Broadband Frequency Conversion
Volume 12
Software Design of Microprocessor - Controlled Receivers Part 2
Design Considerations for Automated RF Test Equipment
Image-Reject and Single-Sideband Mixers
Modulation Recognition for Automated Surveillance Systems
Aircraft Detection and Identification Using Passive Electronics Support Measures
System Control of VHF/UHF Receivers
Volume 13
Parallel Testing of Magnetic Bubble Memories
Developments in Receiving System Integration Techniques
Time Tracking of High PRI Signals with Bit-Slice Microprocessors
Dual Mixers
Wideband YIG-tuned Osciallators
Volume 14
Receiver Dynamic Range: Part 1
Receiver Dynamic Range: Part 2
Volume 16
Automated Noise-Parameter Measurements Using a Microwave Probe
Rapid Broadband Signal Acquisition
Cascaded Amplifiers
Frequency Discriminators
Design Consideration for Miniaturized Receivers
Millimeter-Wave Block Converters
Volume 17
Mixers in Microwave Systems: Part 1
Mixers in Microwave Systems: Part 2
Surface-Mount Component Technology
Fiber Optics for Receivers
Combine Filters for Microwave and Millimeter-Wave Frequencies Part 1
Combine Filters for Microwave and Millimeter-Wave Frequencies Part 2
Volume 18
Surface-Mount Devices Reflow Soldering
Design Considerations for Fast Switching PLL Synthesizers
Atmospheric Pressure vs. Low Pressure Chemical Vapor Deposition
GaAs MMIC Voltage-Controlled Phase Shifter
Tech Notes
Gain of Directional Antennas
Mixer Application Information
Mixers as Phase Detectors
PSK Demodulation: Part 1
PSK Demodulation: Part 2