Teledyne e2v HiRel has announced two additions to its family of high power limiters, the TDLM052402, a quasi-active, 2 kW, L/S/C-band SMT PIN Diode Limiter, and the TDLM961122 High Power Limiter Module a quasi-active, 1 kW, ARNS/IFF-band SMT PIN Diode Limiter. Both devices offer “always-on” high-power CW and peak protection.
The new power limiter modules are packaged in a small 8 mm x 5 mm form factor designed for demanding electronic warfare and radar applications and utilize proven hybrid assembly technology. Parts are screened and qualified for high-reliability applications. Each has an operating temperature range of -65 °C to 125 °C. They boast excellent thermal management features, with a proprietary design methodology that minimizes thermal resistance from the PIN Diode junction-to-base plate (RTHJ-A). The limiter design employs a two-stage detector circuit which enables ultra-fast turn-on of the high-power PIN Diodes.
“These two devices are excellent additions to Teledyne e2v HiRel’s high power limiter portfolio for military applications, as we continue to expand our RF product line,” said Mont Taylor, VP of Business Development at Teledyne HiRel. “We support Source Controlled Drawings, and devices are tested and shipped from our certified facility in Milpitas, California, one of the industry’s most trusted production locations.”
The first device, the TDLM052402, is designed for optimal small-signal insertion loss, permitting an extremely low receiver noise figure while simultaneously offering an excellent large input signal in the range of 0.5 GHz to 4 GHz. The second device, the TDLM961122, is also designed for optimal small-signal insertion loss, permitting an extremely low receiver noise figure while simultaneously offering excellent large input signal in the Aeronautical Radio Navigation Service (ARNS)/ Identification Friend or Foe (IFF) frequency range of 960 MHz to 1215 MHz.
Key Features and Specifications of these Power Limiters:
| PARAMETERS | TDLM052402 | TDLM961122 |
| Frequency Range | 0.5 to 4 GHz (25 µsec pulse width at 5% duty cycle) | 960 to 1215 MHz (1 µsec pulse width at 1% duty cycle) |
| CW and Peak Power | 53 dBm (200 W), and 63 dBm (2,000 W) | 48 dBm (63 W), and 60 dBm (1,000 W) |
| Low Insertion Loss | 0.7 dB | 0.3 dB |
| Return Loss | 15 dB | 17 dB |
| Low Flat Leakage Power | 17 dBm | 14 dBm |
| Low Spike Energy Leakage | 0.5 ergs | 0.5 ergs |
| Input/Output DC Blocking Capacitors | Yes | Yes |
| RoHS Compliant | Yes | Yes |
| Operating Temperature Range | -65 to 125 °C | -65 to 125 °C |
Click here to learn more about TDLM052402.
Click here to learn more about TDLM961122.
