Impedance Parameter Display

Impedance Parameter Display
Agilent E5070B/E5071B ENA Series RF Network Analyzers
Impedance Parameter Display
First Edition
No. 16000-95025
August 2003
Notices
The information contained in this document is subject to change without notice.
This document contains proprietary information that is protected by copyright. All rights
are reserved. No part of this document may be photocopied, reproduced, or translated to
another language without the prior written consent of Agilent Technologies.
Agilent Technologies Japan, Ltd.
Component Test Division Kobe
1-3-2, Murotani, Nishi-ku, Kobe, Hyogo, 651-2241 Japan
MS-DOS®, Windows®, Windows 98, Windows NT®, Windows 2000®, Visual C++®, Visual
Basic ®, VBA, Excel and PowerPoint® are U.S. registered trademarks of Microsoft Corporation.
Portions ©Copyright 1996, Microsoft Corporation. All rights reserved.
©Copyright Agilent Technologies Japan, Ltd. 2003
The customer shall have the personal, non-transferable rights to use or copy the VBA application
programs in this manual for the customer’s internal operations. The customer shall use the VBA
application programs solely and exclusively for their own purposes and shall not license, lease,
market, or distribute the VBA application programs or modification of any part thereof.
Agilent Technologies shall not be liable for the quality, performance, or behavior of the VBA
application programs. Agilent Technologies especially disclaims any responsibility for the operation
of the VBA application programs to be uninterrupted or error-free. The VBA application programs
are provided AS IS.
AGILENT TECHNOLOGIES DISCLAIMS ANY IMPLIED WARRANTY OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
Agilent Technologies shall not be liable for any infringement of any patent, trademark, copyright, or
other proprietary right by the VBA application programs or their use. Agilent Technologies does not
warrant that the VBA application programs are free from infringements of such rights of third parties.
However, Agilent Technologies will not knowingly infringe or deliver software
that infringes the patent, trademark, copyright, or other proprietary right of a third party.
Overview
The Impedance Parameter Display is the VBA application software for the Agilent E5070B/E5071B
Series RF network analyzers. The software calculates impedance parameters such as C, D, L, and Q
from S-parameter measurement results and then displays them on the ENA’s screen.
NOTE: We recommended that you use the E5070B/E5071B firmware revision 3.54 and above.
Installation
l Save the installation program of the Impedance Parameter Display to your floppy disk to create
the installer disk.
l Reboot the ENA. (Turn the ENA’s power OFF, and then turn it ON again.)
l Insert the installer disk in the ENA.
l Press [Save/Recall], Explorer to open the Windows Explorer and double-click on the
installation program in the A drive.
l Install the Impedance Parameter Display by following the instructions of the installation
program.
If the ENA has an older version of the Impedance Parameter Display installed in it, uninstall the
older version before installing the newer version. The procedure is as follows:
-
Reboot the ENA. (Turn the ENA’s power OFF, and then turn it ON again.)
-
Double-click on the installation program in the Windows Explorer.
-
Uninstall the older version by selecting “Remove ImpedanceParameterDisplay”
in the dialog box.
-
Double-click on the installation program again, and install the newer version by following
the instructions given in the dialog box.
l The Impedance Parameter Display program file and two related DLL files will be installed
under the path D:/VBA of the ENA.
Operating Procedure
l Connect your test fixture to the ENA’s test port 1 (for S11 Reflection mode) or between the
ENA’s test ports 1 and 2 (for S21 Transmission Series mode or Transmission Shunt mode).
l Before running the Impedance Parameter Display program, make measurement setups and
calibration at Channel-1 of the ENA by manual operation.
Typical setup items:
-
Start and stop frequencies
-
Sweep type
-
Number of points
-
Source power level
-
IF Bandwidth
Calibration:
-
If you are going to use the S11 Reflection mode (Shunt to Ground) for impedance
measurement, perform the full 1-port calibration at test port 1.
-
If you are going to use the S21 Transmission Series mode (Series Through) or Transmission
Shunt mode (Shunt Through) for impedance measurement, perform the full 2-port
calibration or TRL calibration (using the TRL VBA macro) between test ports 1 and 2.
l Run the Impedance Parameter Display to make impedance measurements.
-
Press [Macro Setup], Load&Run, and select I mpParamDisp.
(Alternatively, you can press [Macro Setup], Load Project, load “ImpParamDisp.vba” at
D:/VBA, and press [Macro Run]. )
You will see the control panel of the Impedance Parameter Display as shown in Figure 1.
NOTE: The Load&Run function is available on the E5070B/E5071B firmware revision 3.5 and
above.
Figure 1. Impedance Parameter Display Control Panel
l Select the conversion mode at the Z Conversion menu.
Conversion Mode
Calculation
S11 Reflection
Z=Z0*(1+S11)/(1-S11)
S21 Transmission Series
Z=Z0*2*(1-S21)/S21
S21 Transmission Shunt
Z=Z0*S21/(2*(1-S21))
Model
NOTE: Z0 is fixed to 50 ohms in the calculations of the Impedance Parameter Display.
l Select the number of traces in the Num Of Traces menu.
l Select the measurement parameters in the Meas Parameters menu.
Parameter
Description
Ls
Series Inductance
Lp
Parallel Inductance
Cs
Series Capacitance
Cp
Parallel Capacitance
Rs
Series Resistance
Rp
Parallel Resistance
Q
Quality Factor
D
Dissipation Factor
G
Conductance
B
Susceptance
R
Resistance
X
Reactance
Zmag
Impedance Magnitude
Ymag
Admittance Magnitude
Zphase(Rad)
Impedance Phase in radian
Zphase(Deg)
Impedance Phase in degree
Yphase(Rad)
Admittance Phase in radian
Yphase(Deg)
Admittance Phase in degree
NOTES:
-
All of the parameters are displayed with the linear scale for the y-axis. It is not possible to
display the parameters with the logarithmic scale for the y-axis.
-
For the traces displayed by the Impedance Parameter Display, do not change the display format
by using the softkeys under the ENA’s [Format] key. This will corrupt the impedance
measurement data.
l Measure the DUT.
-
To make a single sweep, click on Measure.
-
To make a continuous sweep, turn Repeat ON.
l To leave the Impedance Parameter Display, click on the close button [X] in the upper right hand
corner of the control panel.
NOTES:
-
If you want to perform the following key operations, stop the sweep by turning Repeat
OFF.
Change the stimulus setups such as IFBW, NOP, Start, Stop, and so on.
Re-perform calibrations.
-
The following functions are not available when using the Impedance Parameter Display.
Format
Memory Trace, Trace Math
Electrical Delay, Phase Offset
Timedomain Transform, Gating
Z Conversion
Smoothing
-
Do not change the setup of trigger related functions with the ENA’s front panel keys while
using the Impedance Parameter Display. The trigger is controlled by the VBA program.
-
If you want to preset the ENA or use the save/recall function, leave the Impedance
Parameter Display by using the close button [X].
-
When the analyzer ’s sweep time is long, the status bar under the Measure button indicates
the progress of the sweep.
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