Varactor Controlled Oscillator
17.70 - 19.70 GHz
Features
q
q
q
MA87826
V3.00
2.10 MAX.
(53.34)
q
q
q
Excellent Tuning Linearity
Small and Lightweight
Modulation and External AFC Control can be
Commonly Applied to Electronic Tuning Bias
Power Outputs to 23 dBm Available
±0.05% Frequency vs. Temperature Stability
Suitable for Digital or Analog Microwave Radio
Applications
AFC/MODULATION BIAS
1.405
(39.69)
0.900
(22.86)
0.640
(16.26)
GUNN BIAS
4-40 UNC-2B
4 PLCS. MATES WITH
UG-595/U FLANGE
WR-42 W.G.
0.725
(18.42)
0.670
(17.02)
Description
A mechanically and electronically tunable Gunn
oscillator designed to generate RF power in the range of
17.7 to 19.70 GHz. This VCO is suitable as the transmit-
ter in point-to-point microwave radio systems. A Gunn
diode and GaAs hyperabrupt varactor diode are coupled
in a single high Q cavity to provide low AM/FM noise,
excellent frequency and power stability with respect to
changes in operating temperature.
0.850
(21.25)
MECHANICAL FREQUENCY TUNER
(ADJUSTABLE WITH SCREWDRIVER)
Dimensions in ( ) are in mm.
Specifications @
25°C
Parameter
Frequency Range
1
Power Output
Electronic Tuning Ranges
Modulation Sensitivity
2
Voltage Operating Range (Gunn)
3
Operating Current (Gunn)
Startup Current (Gunn)
Voltage Operating Range (Tuning)
Change Frequency vs. Temperature
Recommended Output Load Parameter
Operating Temperature Range (Ambient)
4
Waveguide Size/Flange
Symbol
F
P
OUT
∆F/∆V
MOD/SENS
V
OP
/GUNN
I
OP
I
TH
V
OP
/TUNING
∆F/∆T
LOAD (SWR)
T
OP
Units
GHz
mW
MHz
MHz/V
VDC
mA
mA
VDC
MHz
SWR
°C
Specifications
17.70 to 19.70
80 Min. Over T
OP
50 Min.
5.0 to 12.0
+5.5 to +8.5
1600 Max.
2000 Max.
0 to +12.0
±13 Max.
1.5:1 Max., Any Phase
-30 to +70
WR-42, UG-595/U
1. Available in 450 MHz mechanically tuned bands.
2. Tuning voltage +3.0 to +9.0 VDC.
3. Specific voltage assigned by factory. Power supply should be held to ±0.10 V.
4. The ambient temperature is defined as air temperature.
5. A 6.8 microfarad capacitor is supplied between the Gunn bias pin and ground to suppress bias line oscillations.
Specifications Subject to Change Without Notice.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
1
Asia/Pacific: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
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