The input of the multiplier is equipped with isolation
and a gain stage driving the 4x (V-band 50-75 GHz) or
6x (W-band 75-110 GHz) multiplier diodes. The multiplier
design incorporates intermediate and post filter stages for
the low
−
60 dBc harmonic performance. The post filters
can be removed for higher output power or replaced with
through waveguide.
The post filter is followed by a waveguide isolator to
improve source match
−
a critical characteristic for testing
devices with return loss values between 0 and 10 dB. The
reflection and reference couplers provide 40 dB typical
directivity.
The novel package reduces a bench full of waveguide and
detector components into about nine inches. As a single
package, the multiplier is convenient and much more rugged
than previous test stands using discrete waveguide and
detector test components.
Frequency Scaling
The
User Scaling
menu is accessed through the
Applications
menu under the
SYSTEM MENU
front panel
key. The new selection automatically adjusts the horizontal
frequency axis, cursors, and marker displays.
External Leveling
Figure 7 shows how leveled output power at the multiplied
frequency may be achieved using the optional external
leveling. Two low VSWR, 3 dB attenuators are used to
improve test accuracy when measuring low insertion
loss devices.
1. Select the 54100A output power to 7.0 dBm
2. Press the
EXTERNAL LEVELING
front panel key, then
3. Press
SELECT
to activate the automatic level calibration
function. (See the 54100A operation manual for more
information on the automatic level calibration function.)
The CRT display should indicate LEVELING PASSED, and
the UNLEVELED light on the front panel should not blink
as the frequency is swept. If the automatic scaling is unable
to level the multiplier output, try another 54100A output
power setting and repeat steps 2 and 3.
54100A SERIES
NETWORK ANALYZER
560-10BX-2
DETECTOR CABLE
+15Vdc
TRANSMISSION
DETECTOR
3 dB
ATTN
RF IN
>+5 dBm
ANRITSU
REFLECTOMETER
MILLIMETER WAVE
5400-MMXXXX
TEST
PORT
3 dB
ATTN
(OPT.)
A
B
R
EXT LEVELING
(Rear Panel)
DUT
Figure 7
Setup for leveling the output from the 54100A
NOTE
The optional external leveling feature
improves power flatness at the
multiplier output or at the output
of active devices.
NOTE
Cursors may be set to automatically
search for key device characteristics,
such as 3 dB Bandwidth.
March 1998; Rev: B
11410-00169
Data subject to change without notice
AN54100A-3 /GIP-E
Sales Centers:
US
(800) ANRITSU
Canada
(800) ANRITSU
South America
55 (21) 286-9141
Sales Centers:
Europe
44 (01582) 433200
Japan
81 (03) 3446-1111
Asia-Pacific
65-2822400
Microwave Measurements Division
•
490 Jarvis Drive
•
Morgan Hill, CA 95037-2809
http://www.global.anritsu.com
•
FAX (408) 778-0239
