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Introduction
This Antenna Measurement Systems Configuration
Guide will help you configure a custom Agilent
Technologies 85301B or 85301C antenna measure-
ment system that meets your measurement
requirements. This guide is primarily for those cus-
tomers who desire to design, integrate, and install
their own antenna measurement systems using
Agilent antenna test instrumentation. The guide
will lead you through all the steps. For the do-it-
yourself customer, this guide will assist you in
determining what instrumentation to order from
Agilent Technologies. Your Agilent Technologies
sales engineer will be glad to assist you in procur-
ing the instrumentation. If desired, technical assis-
tance is available from systems engineers who are
experienced in configuring antenna measurement
systems.
Some customers may prefer the design, integra-
tion, and installation of an antenna instrumenta-
tion subsystem be performed for them by a solu-
tion supplier who has extensive antenna configura-
tion experience. Nearfield Systems, Inc. (NSI), an
Agilent Technologies channel partner, can provide
this service. NSI will work with you to understand
your measurement needs, and then design an RF
subsystem that meets your requirements. In addi-
tion to system design and configuration, NSI pro-
vides system integration, on-site installation, and
performance verification to ensure that the system
delivered meets your requirements. NSI will pro-
vide a complete RF subsystem, reducing your risk,
and eliminating the need for your personnel to
design and configure a system.
Other customers may need an application solution:
a complete system solution that addresses all
aspects of a measurement application, such as a
complete near-field or far-field measurement sys-
tem. You may be designing, building, and testing
antennas instead of an antenna measurement sys-
tem. Agilent Technologies recommends Nearfield
Systems, Inc. for complete near-field and far-field
application solutions. NSI has the measurement
expertise to supply a complete system to meet
your application requirement. NSI can configure
and supply the RF subsystem, the positioning sub-
system, provide the measurement application soft-
ware, and provide system installation and training.
If you choose to use NSI's services, you will not
need to use this configuration guide; NSI will care-
fully consider all the issues covered in this configu-
ration guide. Your Agilent sales engineer has a
technical qualification guide that can be used to
help define your measurement requirements, and
he or she will be happy to work with you to define
your requirements. Your sales engineer can also
assist you in contacting NSI, or you can contact
NSI directly (California, USA) at (310) 518-4277,
FAX (310) 518-4279, by e-mail: sales@nearfield.com,
or visit their extensive website at www.nearfield.com.
Main parts of an antenna range
In general, an antenna range measurement system
can be divided into two separate parts: the trans-
mit site and the receive site (see Figure 1). The
transmit site consists of the microwave transmit
source, amplifiers, and the communications link to
the receive site. The receive site consists of the
receiver, LO source, RF downconverter, positioner,
system software, and a computer.
TRANSMIT SITE
• Synthesized Sweeper
• Amplifers
Figure 1. Far-field antenna range
RECEIVE SITE
• Receiver
• Positioner
• LO Source
• Computer
• RF Downconverter
3
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