Application notes for variable attenuators.
Andrei Grebennikov, M/A-COM Eurotec
RF & Microwave Power
Nonlinear Active Device Modeling
3: PA Design Fundamentals
Lecture 4: High Efficiency
Power Amplifier Design
Anritsu App Notes
Downloadable application notes on RF & microwave test methodology.
Standard Antenna Terms & Related Formulas.
Frequency Hopping VS. Direct Sequence and Frequency Hopping (FH).
Group Delay Explanations & Applications.
Class-E RF Power Amplifiers, by Nathan O. Sokal, WA1HQC.
Dielectric Aging Phenomenon.
ASIC Design Guidelines.
Bell System Technical Journal
editions from 1922 through 1983. Bell Labs is the source of many significant contributions, of course, in the
area of telephony, but also in memory devices, imaging devices, system organization, computers and software technology,
as well as acoustics, optics, switching, transmission, wireless and data communication. Generously made available
by Lucent Alcatel Lucent.
Capacitor Basics - Definitions and configurations, with some equations
Analysis of Complex Modulated Carriers Using Statistical Methods
Huge Whitepaper Collection.
The Noble Art of De-Coupling.
Digital Transmission: Carrier-to-Noise, Signal-to-Noise & Modulation
Error Ratio - Definitions, equations, images, tutorial.
Complex 2 Real
is the mother lode of communications tutorials, compliments of Charan Langton.
Antenna Pattern Measurement: Concepts and Techniques, part 1, by Dr. Michael D. Foegelle. The first article
of this two-part series explores the basic concepts and techniques of antenna pattern measurement and evaluates
the benefits and drawbacks of various measurement methods.
The RFDAC (Radio Frequency Digital to Analog Converter) Breakthrough and Advantages, by Michael Hopkins.
GaAs FET Power Amp Simulation.
Battery Handling - Li-Ion, by Matt Schindler.
Components, Assemblies & Materials Association (ECA)
EMI Filter Problems? Avoid them with
proper installation and selection, by Mark Carter, Dearborn Electronics.
Clock Requirements for Data Converters - Equations for calculating jitter and phase noise
in data converters, by Don Tuite.
Publications include standards and documents, books, EOS/ESD Symposia proceedings,
selected papers and white papers, EOS/ESD Symposia presentations, ESD tutorial and seminar notes.
Cuming Microwave Products
Energizer Application manuals - Alkaline,
Manganese Dioxide App Note,
The World of the Near Field, by Tom Lecklider.
FCC Office of Engineering and Technology
Adaptive Antenna Tutorial - Spectral Efficiency
and Spatial Processing.
Federal Communications Commission FCC
This is a handy troubleshooting guide, mainly for
commercial equipment such as television, AM/FM radio, paging systems, VCRs - even doorbell transformers. It was
last updated in 1993. Still, it can be useful.
Bluetooth Remote Control from Your Mobile Phone. FlexiPanel makes a lot of
turnkey modules for ZigBee and Bluetooth applications. Admittedly, this concept does scare me a bit from a terrorist
Enclosures for EMC Compliance. Even though Dr. Dash is an accomplished expositor on Maxwell's Equations, his opening
quote here is, "While science has devised new models and computerized methods for EMC design, your best tool for
enclosure design may still be your thumb."
On this website you will find an incredibly extensive collection
of papers on the subject of EMC/EMI/RFI testing and measurement, anechoic chambers, antennas, Maxwell's Equations,
regulatory law, noise control, crosstalk, product liability, and much more.
Granite Island Group
Basics - In PDF format.
Application Notes: Attenuators.
A Review of Key Equalizer Specifications and What They Mean, by Richard
High Frequency Electronics
Electromagnetic Radiation and Human Health: A Review of Sources and
HP Journal Online Archive
This appears to be a complete collection of the HP Journal,
running from September 1949 (v1. n.1) through February 1998.
WebEE series of tutorials & primers. Many articles on Amplifiers and Filters, Batteries, Classes in Electronics,
CMOS, Communications, Digital Filters, Electrostatics, Microprocessors, Medical, MOSFETs, Motors, Operational
Amplifiers, Optoelectronics, PC Related, Phase Locked Loops, Power Conversion, Pressure Sensors, and Printed Circuit
V / UHF Antenna Design.
Instruments For Industry
Selection and Operation of RF Power Amplifiers for EMC Testing Applications.
International Rectifier App Notes
App notes in .pdf format including motor control, lighting, high voltage ICs, class D audio, automotive, AC-DC,
DC-DC, aerospace and defense, general, MOSFET, IGBT, diode, package, thermal.
Design Using HFA3046, HFA3096, HFA3127, HFA3128 Transistor Arrays.
Boshnakov, Aerial Facilities Limited
First-Time-Right Design Of RF/Microwave Class A Power Amplifiers Using Only S-ParametersA procedure
of how to design RF/Microwave Class A power amplifiers in a very efficient and highly accurate manner when the
only initial data available are the S-parameters of the transistors.
Blocking vs. Non-blocking
Magnetic Core Design Rules.
Maxim Integrated Products
XBee Antennas - Practical information regarding the performance of the XBee and XBee-PRO
Download application notes relating to Maury products and subjects of
interest. MECA Electronics
Quatrature Hybrids 90°i Power Dividers/Combiners 10 kHz to 40 GHz General Information.
Design Tutorial, by Tom Yestrebsky.
Design and Construction
of a 6kW Pulsed Amplifier for 1.2-1.4GHz Applications, Corporate Structure Amplifier, Design of a High Power Amplifier
to Replace TWTAs in Airborne Applications, CW Amplifiers, Pulsed Amplifier, The Choice is Yours, Application for
Milmega Amplifiers in the Communications Industry.
Interference Technical Index
Antenna Application Notes.
Narda Microwave East
ADC Interleaving - Interleaving ADCs for Higher Sample Rates, by Nicholas C. Gray.
Designing Filters Using the Digital Filter Design Toolkit, by Rahman Jamal, Mike Cerna, John Hanks.
A Tutorial on Applying Op Amps to RF Applications, by National
Naval Education & Training Professional Development & Technology Center
Electricity and Electronics Training Series Module 10 - Introduction to Wave Propagation, Transmission Lines,
Navy's Electrical Engineering
Training Series (NEETS)
The entire series downloadable in PDF format.
Battery Selection Guide - Lots of good information on battery chemistries and charge/discharge characteristics.
Mismatch Design Using MMICAD - Application note, by D. Fitzpatrick.
Antenna application notes from Orban Microwave Products.
Paul Wade W1GHZ
W1GHZ Online Microwave Antenna Book - Excellent - a good reference for all microwaves.
Chemistry FAQ - Here we discuss different of the battery designs currently used, some of the chemistry involved,
and advantages and disadvantages of each design.
Lifex™ Lithium Coin
Cells & FB Encapsulated Lithium Coin Cells - Part 1, application notes & product data sheet.
Rohde & Schwarz
Manage Military Electronics Microwave RFI - Various types of microwave absorbing materials use either dielectric
or magnetic loss to limit RF interference in military electronics equipment, by Jack T. Gear
Cavity Resonance Using Absorber Material - By implementing microwave absorbent material, unwanted cavity resonances
are effectively dampened to prevent microwave radiation in circuits where PC-board is used as a cover, by Paul
- Detecting Interfering
Signals and Mitigating Them, by Steve Thomas.
- Fractals’ New Era in Military Antenna Design,
by Nathan Cohen.
- Power Supply and Ground Design
for WiFi Transceiver, by By Roger Bremer, Tracey Chavers, Zhongmin Yu.
- Predicting junction temperature and MTTF
for MMIC devices, by Radha P.N. Setty.
- Sampling &
Aliasing - Mathematical basics of band-limited sampling and aliasing, by Vladimir Vitchev.
Downloadable list of app notes.
Signal Processing Group, Inc
Bond wire failures ( fusing) in integrated circuits with pulsed currents – an analytical view.
Antenna Design Considerations.
Amplifiers & linear including audio amplifiers, op amps, comparators,
current sensing, difference amplifiers, instrumentation amplifiers, isolation analog amplifiers, logarithmic amplifiers,
sensors, sensor conditioning, 4-20mA transmitters, solenoid/valve power drivers (PWM), TEC & pump laser bias.
UMR EMC Laboratory Technical Report
Clocks & timers including clock circuits, real-time clocks, memory interface clocks and registers, digital
media systems clocks, data communications clocks, wireless base station clocks.
Data converters including analog monitor & control circuitry, analog to digital converters, CODECs, digital
to analog converters, MicroSystem mixed-signal data converters, touch screen controllers.
Digital signal processing including DaVinci™ digital media processors, C6000™ high performance DSPs, C5000™
power-efficient DSPs, C2000™ digital signal controllers, other TMS320™ DSPs.
Interface including 1394, CAN, display interface, isolators, LVDS/M-LVDS/ECL/CML, PCI, RS-232, RS-422, RS-485,
SCSI termination & transceivers, serializers & deserializers, UARTs, USB.
Power management including AC/DC & DC/DC power supplies, battery management, hot swap & power distribution,
linear regulators, plug-in power modules, power management special functions, supervisory circuits (voltage
supervisors), non-isolated switching, DC/DC regulators, power management multi-channel IC (PMIC) solutions,
lighting and display solutions, references, fusion digital power(TM) control solutions.
Measurement in FR-4
Dielectric Constant and Loss Tangent in FR-4.
University of California
Power Amplifier Design Lectures - ECE 145A/218A, by Professor Steve Long.
University of California
RF Power Amplifier Design - Design and Implementation of a Common Collector Class B RF Power Amplifier in
InGaP HBT Technology, by Oliver Isler.
University of Guelph
Capacitor history - A very nice introduction to capacitors including history back to Leyden Jar, by Tony van
University of Illinois Urbana-Champaign
Complex Numbers, Phasors & Circuits - Another
great PowerPoint presentation from, by Professor Amanogawa.
University of San Diego
Amplifier Design - Design of Microwave Transistor Amplifiers Using S Parameters - EEE 194 RF course material.
San Diego, CA
Filter Design, Distributed Element, from Ernie Kim. Periodic structures and equivalent
lumped element models.
of San Diego, CA
Minimum loss attenuator, from Ernie Kim, Reference - RF Design Guide: Systems,
Circuits and Equations. Peter Vizmuller.
University of San Diego,
RF inductor design, from Ernie Kim.
A very extensive treatise of
many antenna types, including definitions, photos, and examples, by David Jefferies.
University of Surrey
Yagi-Uda Antennas - Tutorial with photographs of actual antennas, by David Jefferies.
UTE Microwave, Inc
Basic Circulator Facts.
Jitter in Clock Sources.
Virginia Polytechnic Institute & State University
Effect of Admixtures, Chlorides,
and Moisture on Dielectric Properties of Portland CementConcrete in the Low Microwave Frequency Range, Thesis
by Kiran Pokkuluri.
Virginia Polytechnic Institute & State University
Ultra-wideband Propagation Measurements
and Channel Modeling. DARPA NETEX Program Report on Through-the-Wall Propagation and Material Characterization.
Low Frequency Circulator/Isolator Uses No Ferrite or Magnet, by Charles
GPS Receiver Hardware Design.