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Crossed-Field Amplifiers

L3 Electron Devices is the world leader in Crossed-Field Amplifier (CFA) production and development, delivering devices from L- to X-Band, with power levels from 60 kW to 5 MW peak. L3 CFAs are currently being produced for some of the world's most advanced radar systems such as the Aegis AN/SPY-1 and the Patriot Missile System.

Crossed-Field Amplifiers are non-linear saturated amplifiers characterized by high-efficiency, moderate gain and bandwidth, and low-noise performance. They are also relatively small and light weight, operate at low voltages yet are capable of extremely high peak powers. For this reason, they are attractive choices for mobile, shipboard, and airborne radar applications. Excellent phase coherency, control and linearity make the CFA an excellent choice for phase array applications.

At L3, the latest technology serves as a starting point for continuous innovation. We employ the most experienced CFA engineers and physicists, and strive to produce better products through advanced material, design, and technique development. In the cases where a customer requires a device with a tailored specification, scaling of an existing CFA to meet the requirements can be accomplished. L3's CFA technical staff will be there for providing the most reliable solution.

Tube
Type
Frequency
Range (GHz)
Min.
Peak Power (MW)
Duty
Cycle (%)
Nominal
Gain (dB)
Pulse
Width (µ)
Raytheon
Equivalent
L-4806 1.25 to 1.35 0.1 3.2 13.5 40 QKS-1319
L-4939/4940 1.25 to 1.35 0.55 1.24 N/A 3 QK-629/QK-630
L-4953 1.28 to 1.35 5.3 0.1 11.2 2 QK-653
L-4924 Low S-Band 0.15 0.5 10 7 QKS-2074
L-4925 Low S-Band 1.25 0.4 10 5 QKS-2075
L-4717 2.9 to 3.1 .06 2.8 16 35 QKS-1629
L-4718 2.9 to 3.1 0.666 1.48 11 30 QKS-1540
L-4719 2.9 to 3.1 0.525/2.2 2.5/1.25 10/7 28 QKS-2071
L-4765 2.9 to 3.1 2.6 0.53 7 28 N/A
L-4756 3.09 to 3.51 1.2 2.5 10 110 QKS-2064
L-4822 5.4 to 5.9 0.630/1.25 1.0/0.56 10.2/7.0 37/35 QKS-1343
L-4750 9.0 to 9.2 0.3 0.4 14 1.5 QKS-1874?
L-4764 9.5 to 10.0 0.5 0.11 12 2 QKS-1721