D196 Series Multi-Octave PIN Diode Attenuators

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Application Notes for Microwave Attenuator

The D196 Series is a family of non-reflective voltage variable 60 dB PIN Diode Attenuators covering the frequency range from 0.5 GHz to 18 GHz in four overlapping multi-octave bands.

Each model in the Series is equipped with an integrated driver which controls the attenuation level at the rate of 10 dB/volt.

The RF circuit consists of two wide-band, T-pad attenuator sections connected in tandem. The driver circuit, which consists of a voltage-to-current converter and linearizing network, furnishes the proper series and shunt currents to control the attenuation value at the specified rate while simultaneously maintaining a bilateral match. (See figs. 1 and 2.)

Series D196 RF schematic diagram
 
Series D196 block diagram

 

  • Frequency range: 0.5 GHz-18 GHz in four overlapping bands
  • Attenuation range: 60 dB
  • Linear control: 10 dB/volt
  • Low Insertion loss
  • Non-reflective

 

D196 Series multi-octave PIN diode attenuator - Kratos General Microwave

  All units in this

  series are equipped

  with integrated drivers

 

PERFORMANCE CHARACTERISTICS

CHARACTERISTIC MODEL D1960B* MODEL D1961B MODEL D1962B* MODEL D1968B
Frequency Range (GHz) 0.5-4 0.5-8 2-8 2-18
Mean Attenuation Range (dB) 60 60 60 60
Insertion Loss (dB) (max) 2.7 2.5 (0.5-4 GHZ)
3.2 (4-8 GHz)
3.2 4.5
VSWR (max) 1.8 1.8 1.8 2.0
Flatness up to
20 dB
40 dB
60 dB

±0.5 dB
±0.75 dB
±1.0 dB

±0.75 dB
±1.0 dB
±1.5 dB

±0.75 dB
±1.0 dB
±1.5 dB

±1.0 dB
±1.25 dB
±3.0 dB

*Special-order product. Consult factory before ordering.

 

Mean Attenuation
   Range
.............................

60dB
Accuracy of Attenuation
    0-20 dB .......... ±1.0 dB
    20-40 dB ........ ±1.5 dB
    40-60 dB ........ ±2.0 dB
Monotonicity ................... Guaranteed
Phase Shift ...................... See Application Note
Temperature
   Coefficient
....................

±0.02 dB/ °C
Power Handling Capability
    Without Performance Degradation:
        All Units....... Up to 50 mW cw or
peak (see Fig 3).
    Survival Power
        All Units.......

2 W average or peak, from -65(°)C to +25(°)C (see Fig. 4 for higher temperatures).
Switching Characteristics
    ON Time.......... 1.0 µsec max.
    OFF Time......... 0.5 µsec max.
Nominal Control Voltage Characteristics
Range
    Operating .................. 0 to +6V
    Maximum................... ±15V
Transfer Function ............... 10 dB/volt
Input Impedance ................. 10 kΩ
Modulation Bandwidth
    Small Signal .............. 20 kHz
    Large Signal ............ 5 kHz
Power Supply
    Requirements
..................

+12V ±5%, 80 mA
-12V ±5%, 50 mA
Power Supply
    Rejection
...........................

Less than 0.1 dB/volt change in either supply
Series D196 maximum peak and average operating power without performance integration  Series D196 microwave attenuator power derating factor
OPTION (G09) ENVIRONMENTAL RATINGS
Operating Temperature
    Range.................
- 54°C to + 110°C
Non-Operating
Temperature Range
.......

- 65°C to + 125°C
   Humidity ...................... MIL-STD-202F, Method 103B, Cond. B (96 hrs. at 95%)
Shock ............................. MIL-STD-202F, Method 213B, Cond. B (75G, 6 msec)
Vibration ........................ MIL-STD-202F, Method 204D,Cond.B (.06" double amplitude or 15G, whichever is less)
Altitude .......................... MIL-STD-202F, Method 105C, Cond. B (50,000 ft.)
Temp. Cycling ................ MIL-STD-202F, Method 107D, Cond. A, 5 cycles
AVAILABLE OPTIONS
Option No. Description
3 SMA female control connectors
7 Two SMA male rf connectors
10 One SMA male (J1) and one SMA female (J2) rf connector
33 EMI filter solder-type control terminal
61 20 dB/volt transfer function with 0 to +3V control signal input
62 ±15V Operation
64A SMB male control connector
 G09 Guaranteed to meet Environmental Ratings
G12 RoHS Compliant
G16 RoHS Plus REACH Compliant

DIMENSIONS AND WEIGHT

Series D196 dimensions and weight diagram

Dimensional Tolerances, unless otherwise indicated: .XX ±.02; .XXX ±.005