DETECTOR LOGARITHMIC VIDEO AMPLIFIER (DLVA)

  
          Application Notes for Integrated Microwave Assemblies (IMA)
.

 

•  Wide Frequency Range: 1 to 18 GHz
•  High Dynamic Range: 70 dB
•  Fast Rise Time: 25 nSec.
•  Airborne Application

 

 


DLVA MODEL DL6118

 

 

To support customers faced with obsolescence and reliability issues of traditional DLVA suppliers, General Microwave has initially designed and supplied Series DL6 DLVA products as Form, Fit and Function replacements.

Presently, General Microwave offers Series DL6 DLVA as COTS catalog products. In addition to catalog models, custom DLVA units with user specific requirements can be offered.

A broad band logarithmic detector has been developed, capable of detecting CW and pulse signals. This broad band Tunnel Diode Detector has a wide dynamic range, high linearity, high sensitivity and high temperature stability. Special drift compensation circuits have been implemented to ensure a low linearity error over temperature.
 
   DLVA Series DL6 Block Diagram
 
 Fig. 1:   DLVA Series DL6 Block Diagram
 
 
TEST  DATA
 
   DLVA Series DL6 Test Flatness Chart
 
 
 
  DLVA Linearity at 18 GHz Chart
 
 
 MAIN SPECIFICATIONS
 
   MODEL DL6118 MODEL DL6218
 PARAMETER
 SPECIFICATION
 1  Frequency Range, min.  (GHz)  1 to 18  2 to 18
 2  CW RF I/P POWER(1) AT J1, max. (W)  2
 3  TSS dBm (20 MHz VIDEO BW), Min. (dBm)  -67
 4  SP2T RF SWITCH  ISOLATION, Min. (dB)  60
 5  SWITCHING TIME, Max. (nS)  200 (TURN ON & OFF)
 6  DLVA TYPE  DC COUPLED EXTENDED DYNAMIC RANGE
 7  LOGGING RANGE (dBm)  -66  TO 0
 8  LOG SLOPE (mV/dB)  70
 9  I/P PULSE WIDTH RANGE (μS)  0.050  TO 150
 10  RISE TIME, Max. (nS)  25
 11  SETTLING TIME (FOR 50 nS PULSE), Max. (nS)  35
 12  FILTER REJECTION AT RF & VIDEO O/P PORTS, Min. (dB)  60 @ DC to 850 MHz  60 @ DC to 1,700 MHz
 13  DC POWER (PROTECTED FOR REVERSE POLARITY, OVER VOLTAGE UP TO ±20V, SHORT CKT PROTECTION & EMI/EMC)
 +15 V ± 5%, Max. (A)  1.3
  -15 V ± 5%, Max. (mA)  300
 
(1) Other specifications are available. Please contact Sales
 
 
 
 ENVIRONMENTAL SPECIFICATIONS
 
 
 1  OPERATING TEMPERATURE  -40ºC TO +85ºC
 2  STORAGE TEMPERATURE RANGE  -54ºC TO +90ºC
 3  RANDOM VIBRATION (OPERATIONAL)  0.2 g2/Hz, 20-2000 Hz
 4  RELATIVE HUMIDITY  95%
 5  ALTITUDE  SEA LEVEL TO 10 Km
 6  MECHANICAL SHOCK  75 g, HALF-SINE, 6 mS, 18 SHOCKS
 7  EMI/EMC  AS PER MIL-STD-461C
 8  ACCELERATION (STRUCTURAL)  10.5 g ON ALL FACES
 
 
DIMENSIONS AND WEIGHTS
 
 
 
 
 
 
 
 
 
 
 

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