Figure 1. 54000-MM Ser ies Module Shown With Model 54147A Scalar Measurement System
1.INTRODUCTION
The WILTRON 54000-6WR10 and -6WR15 are
compact, int egrated, waveguide reflectometers
with an output frequency range of 75 to 110 GHz
and 50 to 75 GHz , respectively.
These modules combine source multiplication, reference sampling, and reflection measurement in a
single compact package. When used with WILTRON scalar network analyzer sys tems, they provide complete ratioed or unratioed reflection measurements from 75 t o 110 GHz or 50 to 75 GHz.
During the remainder of this manual, the 540006WR10 and -6WR15 will be referred to as Reflectometer.
The WILTRON 54000-7WR10 and -7WR15 are 75
to 110 GHz and 50 to 75 GHz detectors with integrated isolators. When used with WILTRON scalar network analyzers, t hey perform transmission
measurements. Fo r ratioed transmission measurements, either a second detector or a Reflectometer
with an int ernal reference detector is required.
2.DESCRIPTION
Internal to the Reflectometers, the RF input (Figure 2) passes through an isolator and is then doubled. The doubled signal is then amplified, passed
through a t uner and a low-pass filter and multiplied again (X2 for -6WR15 and X3 for -6WR10).
At this point the 75 to 110 GHz or 50 to 75 GHz
signal is passed through externally mounted, userselectable filters and then back into the unit. The
signal then passes through an output isolator and
dual-directional coupler to the Test Port. D etectors
on the coupler’s coupled arms provide the reference and reflection outputs.
The 54000-7WRXX Detectors are applied to the
DUT output, where the signal passes through the
detector’s isolator to the detector element.
3.POWER CONNECTION
The Reflectomet er requires DC power of +15V
±0.5V at 550 mA. The connector on the unit is a female BNC “twinax” with +15V on the female cen-
ter pin. A WILTRON P/N A36599 power cable is included to connect directly to below-listed WILTRON instruments that provide rear panel auxiliary +15V power.
490 JARVIS DRIVE ● MORGAN HILL, CA 95037-2809
RF INPUT
12.5-18.75 GHz
+7 dBm
REFERENCE
DETECTOR
OUTPUT
POWER INP UT
+15 VDC
REFLECTOMETER
MILLIMETER WAVE MULTIPLIER
54000-6WR15
50 GHz to 75 GHz
TEST PORT
HARMONIC FILTER
REFLECTION
DETECTOR
OUTPUT
Figure 2. WILTRON 54000-6WR15 mm Reflectometer
54xxA/SM4356
•
541xxA/Option 16
•
68xxxB (≤20 GHz)/SM4957
•
68xxxB (>20 GHz)/SM4954
•
An adapter (female twinax to dual banana plug),
Wiltron P/N SM4816, is available on Special order.
This adapter, in conjunction with cable A36599,
will allow connection to any power supply that has
banana terminals on 0.75-inch (19 mm) centers.
The 54000-7WRXX Detector does not require e xternal power connection.
4.OPERATION AS A mm WAVE SOURCE
The following procedure describes how to operate
the mm Wave Reflectometer as a st and alone
source.
Step 1.Connect DC power to the Reflectometer
POWER INPUT connector as described
in paragraph 3 above. (See Figure 3.)
Step 2.Connect an RF source to the Reflectome-
ter RF INPUT connector.
The level should be +7 dBm ±1 dB at
the input co nnec tor.
Source freque ncy is 12.5–18.75 GHz for
WR15 modules and 12.5–18.333 GHz for
WR10 modules.
Step 3.The mm wave signal is available at the
TEST PORT.
Step 4.If leveling is desired, and t he source is
capable of external leveling, connect the
Reflectometer REFERENCE DETECTOROUTPUT to the appropriat e connector
on the source. Refer to the Operation
Manual for the source.
5.OP ER ATION IN S CA L AR m m WAVE
MEASUREMENTS
The following procedure describes how to operate
the mm wave Reflectometer in a scalar measurement syst em.
Step 1.Connect DC power to the Reflectometer
POWER INPUT connector as described
in paragraph 3 above.
Step 2.Connect an RF source, 12.5–18.33 GHz
to the Reflectometer RF INPUT connec-
tor.
The level should be +7 dBm ±1 dB at
the input co nnec tor.
Source freque ncy is 12.5–18.75 GHz for
WR15 modules and 12.5–18.333 GHz for
WR10 modules.
Step 3.If leveling is desired, and t he source is
capable of external leveling, connect the
Reflectometer REFERENCE DETECTOROUTPUT to the appropriat e connector
on the source. Refer to the Operation
Manual for the source.
Step 4.If ratioed Transmission measurements
are desired, and the Scalar Network
Page 254000-6WRXX
>
>
R
BA
DUT
REFLECTOMETER
MILLIMETER WAVE
TRANSMISSION
DETECTOR
+15V DC
WILTRON
54100A SERIES SCALAR
MEASUREMENT SYSTEM
TEST
PORT
Figure 3. WILTRON 54000-6WRXX mm Reflectometer
Analyzer has an “R” Channel, connect
the Reflectometer REFERENCE DETEC-TOR OUTPUT connector to the Analyzer
R input using the 560-10BX-2 cable provided.
NOTE
Leveling and ratioed measurements cannot be done simultane ously.
Step 5.Connect the Reflectometer REFLEC-
TION DETECTOR OUTPUT to the Analyzer Channel B input.
Step 6.Connect a WILTRON 54000-7WR10 or -
7WR15 detector to the TEST PORT and
the Analyzer Channel A input as appropriate. Perfo rm a Transmission/Reflection Calibration on the Analyzer. Refer
to the Operation Manual for the Analyzer.
Step 7.Remove the detector from the Test Port
and insert the device to be tested.
6.SP EC IF ICATIONS
Performanc e specifications for the WILTRON
54000-MM Series Reflectometers and Detectors
are given in Tables 1 and 2.
Performance specifications for the 54000-7WRXX
Detectors are given below:
General:
Max Input Power, Damage Level: +21 dBm
Return Loss: 17 dB
Model MM5075-7WR15
Frequency Range: 50–75 GHzDynamic Range: >56 dB, typical
Input Port Return Loss: 17 dBInput Port Flange: WR15Output Connector: BNC (f)
Model MM5075-7WR10
Frequency Range: 75–11 0 GHzDynamic Range: >56 dB, typical
Input Port Return Loss: 17 dB Input Port Flange: WR10Output Connector: BNC (f)
54000-6WRXXPage 3
7.ACCESSORIES
The following accessories are included with t he Reflectometer: