Part Number: QBS-598 Broadband 100 Watt GaN Power Amplifier 30 to 512 MHz High Power, Class AB Design for Military Communications Features • • • • • 100 Watts Typical Output Power @ P1dB Push-Pull Configuration Microprocessor Based Control Integrated Heat Sink Lightweight Package; 1.25 lbs. Max API Technologies’ Model QBS-598 is a high power, class AB amplifier utilizing the latest GaN technology to offer broadband performance from 30 to 512 MHz in support of critical communication requirements for both commercial and military applications. The two stage push-pull design incorporates a microprocessor, and a high efficiency DC to DC converter to promote operation over a wide DC input voltage range of +22 to +32 VDC. Over this power supply window, the amplifier draws 9 amps at rated output power for 1dB compression, which is typically 100W, and has a saturated gain of approximately 30 dB. The integrated microprocessor allows for power supply sequencing, transistor bias optimization, temperature compensation, and fault monitoring. This rugged, high reliability GaN based amplifier is configured in a lightweight aluminum housing with an integrated heat sink. It is capable of performing in adverse environments and will not be damaged operating into a 10:1 load mismatch at full rated power. Technical Specifications (1) Absolute Maximum Ratings Unit Typical 25°C Min/Max -40°C to +55°C Parameter Specification MHz 30 - 512 30 - 512 DC Voltage +32.0 Vdc dB 32 29 min. RF Input Power +27 dBm Input Return Loss dB -17 -10 min. Noise Figure dB 6.0 7.5 max. Operating Case Temperature (3) - 40oC to +70oC POUT @ 1dB Compression dBm +50 +49 min. Storage Temperature - 55oC to +125oC POUT @ 3dB Compression dBm +51 +50 min. 2nd Harmonic (2) dBc -17 -15 max. Notes: 3rd Harmonic (2) dBc -11 -10 max. 1. Spurious Signals dBc < -70 — Specification ratings are based on measurements in a 50 ohm system at a nominal DC power of +28 V. DC Voltage Vdc +28 +22 to +32 2. POUT = 80W DC Current (Quiescent) A 0.6 1.5 max. 3. DC Current @ POUT = 80W A 9.0 10.0 max. Maximum Operating Case Temperature is defined as the baseplate temperature which, if exceeded for extended periods, could result in premature unit failure. This data is provided for user reliability information. This may or may not represent the maximum temperature for electrical parameter specifications. | +1.888.553.7531 Parameter Frequency Range Power Gain (2) PA Enable TTL Logic 1: Active / Logic 0: Current < 0.25A PA Enable Switching Time µsec — 20 Mechanical Specifications Parameter Package (non-hermetic) Finish RF In / Out Connectors DC/CTRL Connector Specification Comments API Dwg: 080-25517 Clear Iridite SMA Female 15 Pin D-Sub (Male) 6061-T6 Al Alloy MIL-DTL-5541F, Class 3 4-Hole Flange Mount Standard Density Rev Date: 5/9/2014 © API Technologies Corp. Proprietary Information Page # 1 | www.apitech.com | micro.apitech.com | [email protected] Part Number: QBS-598 Outline Drawing Pin Designations Pin # Signal Pin # Signal 1 +VDC 9 +VDC 2 +VDC 10 +VDC 3 NC 11 STANDBY 4 OVERCURRENT 12 RESERVED 5 TEMP 13 RESERVED 6 SIGNAL GROUND 14 -VDC 7 -VDC 15 -VDC 8 -VDC Rev Date: 5/9/2014 © API Technologies Corp. Proprietary Information Page # 2 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected]