Contact Us         Application Notes for Integrated Microwave Assemblies (IMA)

  • Wide Frequency Range: 0.5 to 18 GHz
  • Three simultaneous IF outputs
  • AM and FM detectors
  • Low Phase Noise
  • Modes of Operation: Scan Mode or Search Mode
  • Built-in test functions
  • Low Power Consumption
  • Low cost
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                                                                                                                                                                                                                            Receiver  Model WBR-0518-MOD




The Model WBR-0518-MOD  Wideband Receiver utilizes cutting edge technology which provides a high performance and cost effective solution. It has been designed for use as a stand alone receiver or it can be used in more complex receiving systems for ELINT and ESM applications.



The Model WBR-0518-MOD Super Heterodyne Wideband Receiver was designed to be a low cost, high performance, self contained system capable of advanced detection and processing of communication and non-communication signals. This receiver offers all the features required for high data rate reception while maintaining high pulse fidelity for interception of radar signals. It is ideally suited for today’s complex environments.

Signals from the antenna are fed to the WBR receiver input. The input stage consists of a high dynamic range front end which includes a preselector. The dual down converter sections use synthesized LO inputs to convert all incoming signals to 1 GHz signal. This 1 GHz signal is then fed to the IF assembly for further conversion, gain control and filtering to provide simultaneous outputs of 160 MHz and 380 MHz. The 1 GHz signal is also provided as a third and separate IF output. In addition, the 1 GHz signal is fed, in parallel, to the demodulator sections which comprise of AM and FM detectors. These can then extract the respective amplitude and frequency information from the modulated 1 GHz IF signal be it CW or narrow pulse widths of 50 nanoseconds.
The WBR internal control assembly configures all of the receiver sub-assemblies and collects their response to generate a global status report. The internal control assembly also includes a communication link with the external Host computer.

The WBR has built in test (BIT) capability which continuously monitors the operation of the receiver. In the event of a malfunction, it will issue a failure indication alert to the main system.
  Receiver Wide Band Functionality Diagram


 1 Operating Input Frequency, min (GHz)
0.5 to 18
 2 Noise Figure, max (dB) 14
 3 Sensitivity (dBm) @ 500 MHz and SNR of 15dB -58
 4 DCA Range, min (dB) 0 to 60
 5 DCA Resolution, min (dB) 1
 6 Measurable Pulse Width 50 ns to CW
 7 Input Signal Modulations Pulse , AM and FM
 8 Instantaneous Dynamic Range (dB) 59
 9 Number of IF outputs 3
 10 IF signal # 1 Centered at 380 MHz with selectable bandwidths of 50, 100, 250, 500 MHz
 11 IF signal # 2
Centered at 160 MHz with selectable bandwidths of 1, 10, 20, 50, 100 MHz
 12 IF signal # 3
Centered at 1 GHz with bandwidth of 500 MHz
 13 Image Rejection, min (dB) 60
 14 RF to IF Gain (dB) 5 to 10
 15 Input 1dB CP, min (dBm) +1
 16 Input / Output Impedance (Ohms) 50
 17 Input / Output VSWR, max 2:1
 18 Spurious Level, max (dBm) -55
 19 Survival Input Power, max (dBm) +20
 20 Total Tuning and Settling Speed Less than 1ms to center frequency
 21 Tuning Step Size, min (MHz) 1
 22 Integrated Phase Error, max. 0.8°  RMS
 23  Phase Noise Performance (SSB), max (dBc/Hz)  
 24     @ 1kHz offset  -85
 25     @ 10 kHz offset  -90
 26     @ 100 kHz offset  -100
 27     @ 1 MHz offset -130
 28  Tuner Frequency Stability Less than 1ppm/year  
 29  Video Signal Outputs LOG AM and FM Detectors (at 1 GHz, BW: 100 or 500
 30  Power Supplies Requirements
 31       5 VDC ± 2.5% 3.2A max
 32      -5 VDC ± 2.5% 0.1A max
 33      12 VDC ± 5%  3.6A max
 34    -12 VDC ± 5% 0.3A max
 35  Receiver Controls Fast Ethernet (100 Base T)
 36  Built In Test (BIT)
 37      On line  Runs in the background
 38      Off line Upon request
 39  Operating Temperature Range, min 0°C to + 70° C
 40  Dimensions 440 x 220 x 40 mm (17.3” x 8.66” x 1.57 “)
 41  Weight  5.8 Kg (13.8 Lb)
Operating Temperature...........0°C to +70°C

Storage Temperature.............-40°C to +85°C

Humidity............................. 95% RH non condensing, @35°C
Shock................................. 22g, Half sine, 20 msec each axis
Vibration........................... Per MIL-STD-167-1A
EMI/EMC............................. Per MIL 461C
The WBR outline shown below can be modified to meet installation requirements of complex receiver systems.
 Dimensions and Outline of Receiver Wide Band