Varactor Controlled Oscillator
14.13 - 15.28 GHz
Features
q
q
q
GROUND
MA87838
V3.00
6.8 MICROFARAD
DC CAPACITOR
q
Small and Lightweight
Low AM and FM Noise
Electronic Tuning Allows Automatic Frequency
Control (AFC)
Suitable for Digital or Analog Microwave
Radio Applications
0.700 MAX.
(17.78)
GUNN BIAS
+A.F.C. BIAS
1.40 MAX.
(35.56)
Description
A mechanically and electronically tunable Gunn oscillator
designed to generate RF power in the range of 14.20 to
15.35 GHz. This VCO is suitable as the local oscillator in
a receiver assembly for a point-to-point microwave radio.
A Gunn diode and GaAs abrupt 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.
2.30
(58.42)
0.140 DIA. HOLE
THRU 4 PLCS.
TO MATE WITH
UG-419/U
FLANGE
(WR62 W/G)
MECHANICAL
FREQUENCY ADJUSTMENT
Dimensions in ( ) are in mm.
Specifications
Parameter
Frequency Range
1
Power Output
Electronic Tuning Range
2
Voltage Operating Range (Gunn)
3
Operating Current (Gunn)
Startup Current (Gunn)
Voltage Operating Range (Tuning)
2
Change Frequency vs. Temperature
4
Recommended Output Load Parameter
Operating Temperature Range (Ambient)
5
Waveguide Size/Flange
Symbol
F
P
OUT
∆F/∆V
V
OP
/GUNN
I
OP
I
TH
V
OP
/TUNING
∆F/∆T
LOAD (SWR)
T
OP
Units
GHz
mW
MHz
VDC
mA
mA
VDC
MHz
SWR
°C
Specifications
14.13 to 15.28
10 Min. Over T
OP
25 Min.
+6.0 to +8.5
500 Max.
650 Max.
+2.0 to +7.0
±10 Max.
<1.5:1 Max., Any Phase
-30 to +70
WR-62, UG-419/U
1. Available in 300 MHz mechanically tuned bands.
2. Wider electronic tuning ranges available with application of higher tuning bias voltage.
3. Specific voltage assigned by factory. Power supply should be held to ±0.10 V.
4. The frequency reference is the frequency at 25°C.
5. The ambient temperature is defined as air.
6. 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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