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Agilent
New Generation Analyzer
Offers Exceptional and Powerful
Analysis Functions for
RF Impedance Measurement
Product Note E4991A-1
Agilent E4991A
RF Impedance/Material Analyzer
Introduction Features of the E4991A
With the trend of wireless Highly accurate RF
communications and digital
equipment operating at higher impedance measurement
frequencies, the need to evaluate The E4991A uses the RF I-V
RF components under higher technique for highly accurate
and wider frequencies is impedance measurement in the
increasingly important not only RF frequency range. As figure 1
for R&D engineers of component shows, the E4991A achieves a
manufacturers but also circuit wider and accurate impedance
designers of equipment measurement up to 3 GHz. The
manufacturers. The E4991A RF RF I-V technique is different
Impedance/Material Analyzer from the reflection coefficient
offers 3 GHz measurement method used by a network
frequency range that covers hot analyzer. This technique
applications such as W-CDMA, measures voltage and current
BluetoothTM and wireless LAN. directly at the DUT (Device
The E4991A offers impedance Under Test) thus the E4991A
measurement capabilities for can achieve higher and wider
your needs today and into the impedance measurement range
Figure 1. Impedance measurement range
future. when compared to a network
analyzer.
This product note describes the
The E4991A can calibrate with
following topics.
the low-loss air capacitor
standard in addition to the