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M/A-COM, Inc.
North America:
Tel. (800) 366-2266
s
Asia/Pacic: Tel. +81 (03) 3226-1671
s
Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883
Fax +81 (03) 3226-1451
Fax +44 (1344) 300 020
1
Specications Subject to Change Without Notice.
V3.00
X-Band Gunn Oscillator
MA86751
Features
10 to 100 mW Gunn Oscillator Series
Low AM and FM Noise
Mechanically Rugged for Industrial Environments
Factory Tunable from 9.9 GHz to 10.6 GHz
Suitable for Part 15 FCC Applications
Description
This series of cavity Gunn oscillators is useful for
inexpensive and reliable low AM and FM noise sources
of microwave power for the commercial X-Band
applications. They are normally supplied for frequency
10.525 GHz with power output levels from 10 mW to 100
mW. They may also be ordered factory tuned for the
other bands from 9.9 to 10.6 GHz used in countries other
than the US. These oscillators are useful for
transmitters/local oscillators in CW Doppler radar systems
such as speed radars, braking systems, traffic control,
door openers, industrial process controls, perimeter
intrusion alarms and other motion detection systems.
These oscillators can be factory modied for RF pulse opera-
tion for usage in ranging radars or pulsed Doppler systems.
0.172 DIA.
4 PLCS
1.22
(31.00)
1.28
(32.52)
1.62 SQ
(41.50)
0.28 MAX.
(7.11)
BIAS
SOLDER
PIN
CAPACITOR
GROUND LUG
0.50
(12.70)
0.70
(17.78)
R.F.
OUTPUT
TO MATE
WITH
UG-39/U.
WR 90
WAVEGUIDE
0.15
(3.81)
q
Dimensions are in ( ) are in mm.
Parameter
Symbol
Units
MA86751A
MA86751B
MA86751C
MA86751D
Frequency
F
GHz
10.525 ±50 MHz
(Mechanical Tuning)
1,2
Power Output
P
OUT
mW
10 Min.
25 Min.
50 Min.
100 Min.
Voltage Operating (Gunn)
3
V
OP/GUNN
VDC
8 - 9
9-10
Operating Current (Gunn)
I
OP
mA
200 Max.
500 Max.
600 Max.
800 Max.
Startup Current (Gunn)
I
TH
mA
350 Max.
700 Max.
850 Max.
1100 Max.
Change Frequency vs.
F/T
MHz
35 Max.
Temperature
Recommended Output
LOAD
SWR
1.5:1 Max.
Load Parameter
(SWR)
All Phases
Operating Temperature
T
OP
°C
-30 to +70
Range (Ambient)
4
Waveguide Size/Flange
WR-90,
UG-39/U
Specications @ 25°C
1. The frequency is factory set and not tunable.
2. The frequency may be factory set to any of the 9.9 to 10.6 GHz radio location bands (contact factory for details).
3. Operating voltage is factory specied and marked on each oscillator. The power supply must be ±0.25 volts.
4. The ambient temperature is dened as air temperature.
5. A 1 to 10 microfarad capacitor is required to reduce bias line oscillators.