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Tech Notes
Have a question about how to perform tests,
or what tests you should perform? A.H. Systems is here to help,
check out our Technical Notes below.
Selecting antenna/power amplifier
combinations
for the coming new RF immunity standards
This article explains different power
amplifier / antenna matching combinations for some new RF immunity
standards. Though far from certain, it looks as if 6 GHz is a strong
canidate for the upper frequency for consumer products. (reprinted with permission
from Interference Technology 2004)
Basic Antenna Terms and Definitions
This is a list of commonly used terms
in the EMC community and there definitions.
R. E. M.
This is a brief overview on how to
perform a standard Radiated Emissions Measurement test. It includes
how to set up, take measurements and calculate results.
RF Related
Conversions
This Tech. Note covers frequently
used conversion factors, how they are derived, and why they are
used. If you need to convert from one series of units to another
for any reason, this is the tech. note for you.
Magnetic Field Conversion Factors
This pdf covers the most commonly used convertion factors
for magnetic field applications.
Antenna
Data Sheets
Here is a list of all the model numbers for which
A.H. Systems has created electronic datasheets. Learn more about our product
details and antenna specifications.
Operation Manuals
Here is a listing by antenna model numbers of the available opertaion manuals.
Antenna
Selection by Test Type
Got a fistful of specifications and
not sure of the corresponding antennas? These pages list our most
often used antennas according to the calling specification.
VHF, UHF, and FM
Radio Frequencies
Need to know the frequencies for
UHF, VHF, or FM Radio? Included here is a listing of the Image,
Color, and Sound frequencies for each channel, as well as the standard
FM Radio frequencies as mandated by the FCC.
dBm - volts - watts
conversion table
This is a simple page to calculate the coversion of dBm, Volts
and watts.
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