LIQUID COOLED TERMINATIONS
Low VSWR
Greatest Heat Transfer
Description
MEC 80-W Series of Rectangular Waveguide Liquid
Cooled Terminations operate with a VSWR of 1.05 max. Thirteen models cover the full
waveguide frequency bands from 2.60 to 40.0 GHz. As dummy loads they ideally meet the
demands of today's extremely high powered systems to permit operational check out without
radiating RF power. Construction utilizes high -temperature absorbing material in intimate
contact with the waveguide walls for good heat transfer. All units are designed to operate
in any position with a coolant inlet pressure of 100 PSIG (max.) and temperature of 150°F
(max). Units are aluminum with MS33656E4 ¼" flared tube fittings for the liquid
coolant connections.
Finish is Chemical Film, per MIL-C-5541, Class 3,
followed by high temperature black epoxy enamel.
A power sampling probe can be supplied asa
separate unit to monitor power. Typical sampling flatness is ± 0.5dB across the
entire band for levels from 30 to 50 dB.
SPECIFICATIONS
MODEL
NO |
FREQUENCY
RANGE(GHz) |
WAVEGUIDE
SIZE |
EQUIVALENT
FLANGE |
MAXIMUM
POWER |
MINIMUM
FLOW RATE (GPM) |
LENGTH
(IN. MAX.). |
| AVERAGE (WATTS) |
PEAK(KW) @ 30 PSIG DRY AIR¶ |
| S80-W |
2.6-3.95 |
WR-284 |
UG-584/U |
15,000 |
4,000 |
5.1 |
30 |
| B80-W |
3.30-4.90 |
WR-229 |
CPR-229F |
15,000 |
3,000 |
5.1 |
30 |
G80-W |
3.95-5.85 |
WR-187 |
UG-407/U |
10,000 |
1,800 |
3.4 |
24 |
| D80-W |
4.90-7.05 |
WR-159 |
CPR-159F |
10,000 |
1,000 |
3.4 |
24 |
| J80-W |
5.85-8.20 |
WR-137 |
CPR-137F |
5,000 |
1,000 |
1.7 |
20 |
| H80-W |
7.05-10.0 |
WR-112 |
UG-138/U |
4,000 |
750 |
1.4 |
12 |
| W80-W |
7.0-11.0 |
WR-102 |
M3922/70-002 |
4,000 |
700 |
1.4 |
12 |
X80-W |
8.2-12.4 |
WR-90 |
UG-135/U |
3,000 |
350 |
1.0 |
12 |
| M80-W |
10.0-15.0 |
WR-75 |
M3922/53-008 |
3,000 |
300 |
1.0 |
10.5 |
| P80-W |
12.4-18.0 |
WR-62 |
UG-1665/U |
1,500 |
250 |
.5 |
9.4 |
| N80-W |
15.0-22.0 |
WR-51 |
M3922/70-011 |
1,500 |
175 |
.5 |
9.4 |
| K80-W |
18.0-26.5 |
WR-42 |
UG-597/U |
1,000 |
100 |
.34 |
7.5 |
| A80-W |
26.5-40.0 |
WR-28 |
UG-599/U* |
500 |
80 |
.17 |
7.5 |
Notes: ¶ Pressurized units are supplied on special
request.
| VSWR: |
1.05 max. |
|
The flow rate is determined from the following
formula |
| COOLANT: |
Typical demineralized water or coolanol |
|
Q=6.8P/Cp·dT |
Where: |
Q= Minimum flow rate in GPM. |
|
Max. inlet temperature: 150°F. |
|
|
|
P= Max. CW power in Kilowatts |
|
Max. inlet pressure: 100 psig |
|
|
|
Cp= Specific heat of coolant |
|
|
|
|
|
dT= coolant temperature rise in °F |
|
The tabularized values are for Cp = 1 for water
and a dT of 20 °F |
|
For different coolants, temperature rises,or
power levels, a different flow rate would be necessary. |
ORDERING INFORMATION
- Order by model No. and specify actual frequency range, VSWR and internal waveguide
pressurization required.
- Add suffix "PS" to model number for power sampling and specify level (30 to 50
dB).
- Half-height terminations, other frequency ranges, flanges, coolant fittings and
pressures, unique mounting arrangements quoted on request.
data subject to change without notice
[Back to Terminations] [Low Power] [Medium Power] [High Power] [Liquid Cooled] [High Power Coaxial Terminations]
1551 Osgood Street, No. Andover, MA. 01845 TEL: 978-685-2776,
FAX: 978-975-4363 email:sales@microwaveeng.com
Updated 03/13/02
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