Official Beta site for
The following RF design software is provided free of charge as a service to the RF and microwave design community.
|An archive of
HPRFhelp is available here!
Although no longer supported, HPRFhelp, originally Hewlett Packard's RF and Microwave Semiconductor Knowledge Base, contains legacy product and applications data not generally available elsewhere.
|RF & Microwave
AppCAD Version 3.0.2
Download installation file for AppCAD 3.0.2
Instructions: Download "setup.exe" to any convenient subdirectory on your HDD. After downloading, double click this executable file from your Windows Explorer to automatically install AppCAD.
Note: Version 3.0.2 is a minor upgrade to version 3.0 and adds these new features:
Everything S-parameters is the quick and easy way of analyzing S-parameter data for devices or circuits to obtain key performance parameters such as gain, stability, reflection loss, and matching impedances.
A unique feature of AppCAD's Everything S-Parameters is the ability to load up to 3 sets of SnP files and make side-by-side comparisons.
This side-by-side comparison feature is exceptionally useful for comparing different devices to assist with design-in decisions, or analyzing the same device under different conditions, e.g., three different bias currents or temperatures. This feature is also useful for looking at circuit performance before and after design changes.
Also unique to AppCAD's Everything S-Parameters is the 2-Port
Single-ended to 1-Port Differential Impedance conversion. This function converts of
a set of conventional, 2-port, single-ended S-parameters into a 1-port differential
impedance. This feature is very useful for measuring balanced circuits with a standard
vector network analyzer.
AppCAD is designed to run on all 32-bit Windows® operating systems. AppCAD has been verified to run on these operating systems:
Windows NT4 with Service Pack 6 or later
Windows 98 - All versions
Windows 95 - Windows 95 version 4.00.950c or later
AppCAD can update many older operating systems during installation to be compatible with AppCAD requirements.
Other System Requirements:
SVGA Display Resolution (800 x 600 pixels) minimum
High Color Display (16-bit/65K colors) Color depths lower than 65K, e.g., 8-bit/256 colors, will result in dithering of some colors used for AppCAD graphics and backgrounds.
If you see a barfy looking background, you need to set your display to a higher color depth.
Error / Installation Notes
If errors occur during installation or execution, some suggested causes and solutions are:
What is AppCAD?
AppCAD is an easy-to-use program that provides you with a unique suite of RF design tools and computerized Application Notes to make your wireless design job faster and easier. AppCAD's unique, interactive approach makes engineering calculations quick and easy for many RF, microwave, and wireless applications. AppCAD is useful for the design and analysis of many circuits, signals, and systems using products from discrete transistors and diodes to Silicon and GaAs integrated circuits. The keyword for AppCAD is easy - no circuit files, no manuals - just quick and easy.
AppCAD is updated with new
features as time permits. This web site will always have the latest downloads
and version information.
The AppCAD Story
The Application Engineering staff of the Microwave Semiconductor Division of Hewlett-Packard created AppCAD as a design help for RF & Microwave (a.k.a., wireless) designers. AppCAD was then, and still is, distributed free of charge as a service to the wireless engineering community.
AppCAD was originally released in 1990 by Hewlett-Packard as version 1.02 (the "Classic" version). Version 1.02 was a DOS program that was compatible with Windows 3.x. Although based on the original MS-DOS® version of RF and Microwave AppCAD "Classic," the current version of AppCAD runs on 32-bit Windows® operating systems and contains many new and innovative design programs.
In 1999, Hewlett-Packard split into two companies, with the computer-related business retaining the Hewlett-Packard name ($49 billion revenue, 88,500 employees) and the test, measurement, semiconductor, and chemical analysis business sectors becoming Agilent Technologies ($11 billion revenue, 47,000 employees). At this time, the Microwave Semiconductor Division of HP become the Wireless Semiconductor Division of Agilent Technologies, which retained the AppCAD program.
In 2005, Agilent spun its semiconductor sector, including the Wireless Semiconductor Division, off into a new company named Avago Technologies ($2 billion revenue, 6,500 employees).
The DOS version of AppCAD still contains useful legacy calculations and is available for download, however it is no longer supported.
Partial Contents of original AppCAD Classic (DOS version):
* Now included.in the Windows version.
Note that AppCAD Classic only runs on "real" DOS. With the exception of the DOS emulator packaged with Windows XP, the other Windows emulators lack the true DOS functionality required by AppCAD and will only run parts of the program.
Click here to download "appcadcl.exe" (596 KB)
The information on this Site is provided in good faith for general informational purposes only. This Site may contain information submitted by a third parties. This information should not be relied upon for any specific purpose and no representation or warranty is given as to its accuracy or completeness.