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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 phased-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

L4806

1.25 to 1.35

0.1

3.2

13.5

40

QKS-1319

L4939/4940

1.25 to 1.35

0.55

1.24

N/A

3

QK-629/QK-630

L4953

1.28 to 1.35

5.3

0.1

11.2

2

QK-653

L4153

1.28 to 1.35

20

0.03

10

2

N/A

L4253

1.525 to 1.625

17.5

0.03

10

2

N/A

L4717

2.9 to 3.1

.06

2.8

16

35

QKS-1629

L4719

2.9 to 3.1

0.525/2.2

2.5/1.25

10/7

28

QKS-2071

L4756

3.09 to 3.51

1.2

2.5

10

110

QKS-2064

L4822

5.4 to 5.9

0.630/1.25

1.0/0.56

10.2/7.0

37/35

QKS-1343

L4764

9.5 to 10.0

0.5

0.11

12

2

QKS-1721

For more information, please contact us.