SOLID STATE POWER AMPLIFIER LINEARIZER & DRIVER

KEY FEATURES

> K-Band Design (17.7 GHz to 20.2 GHz)

> > 10% improvement in efficiency

> Gain Enhancement to complement SSPAs (customizable up to 4dB)

> Phase Lag to complement SSPAs (customizable up to 60°)

> Output Power to drive SSPAs (customizable up to 25 dBm)

> 20 dB Typical Gain

> DC Power: < 2.0 Watts

> Weight: < 100 grams

The SSPA (Solid State Power Amplifier) Linearizer/Driver is a wideband SSPA driver operating in the K-Band frequency ranges. Use of this linearizer typically improves SSPA efficiency by greater than 10% by an RF pre-distortion technique which increases the linear output power for SSPAs. In particular, the SSPA Linearizer/Driver contains a built-in amplitude and phase pre-distortion generator to produce gain expansion and phase lag. The pre-distortion characteristics have been designed to complement Gallium Nitride (GaN) SSPAs and may be custom-tuned to specific SSPA mask performance. Typical increases in linear output power are between 1 dB and 3 dB. The linearizer incorporates

output gain control to compensate for the gain variation of the SSPA with frequency. Gain may be varied through the command interface.

The linearizer is constructed using thin film amplifier, attenuator, equalizer, linearizer, and control circuits. The thin film modules are enclosed in an aluminum laser-sealed hermetic housing. The housing has two Super SMA female RF connectors and a 15 pin Micro-D connector for DC/Command interface.

The SSPA Linearizer is available on either a small four hole baseplate or can be mounted using the 4X #2-56 tapped holes on the bottom of the unit.

SPACE GRADE SSPA LINEARIZER/DRIVER SPECIFICATIONS

Parameter Units Specification

Frequency Range GHz 17.7 to 20.2

Output Power Level dBM Up to 25 dBm(22 dBm Typ.)

Gain Expansion dB 0 to 4(2 dB Typ.)

Phase Lag deg Up to 60°(10° Typ.)

Output Gain Control Range dB 6

Input Power Level at Max Rated Power dBm -20 to +5( 0 dBm Typ.)

RF Susceptibility dBi -75

RF Connectors mm Super SMA Female

DC Voltage V +8.0

DC Power W 1.0 Nom., 1.5 Max.

Mass g < 100

BANNER PLACEHOLDER CLICK IN THIS RECTANGLE AND THEN GO TO FILE -> PLACE TO INSERT IMAGE

OUTLINE DRAWING

Preliminary Engineering Model (EM) Power Sweep Measurements at 17.7 GHz

Preliminary Engineering Model (EM) Power Sweep Measurements at 18.95 GHz

TYPICAL PERFORMANCE CURVES

Solid State Power Amplifier (SSPA) Linearizer & Driver

© 2020 L3Harris Technologies, Inc. | 02/2020

This document consists of basic marketing information that is not defined as technical data under EAR Part 772.

L3Harris Technologies is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers’ mission-critical needs. The company provides advanced defense and commercial technologies across air, land, sea, space and cyber domains. 

t +1 916 351 4500 | f +1 916 351 4550 SMnmw-Inside.Sales@L3Harris.com

Preliminary Engineering Model (EM) Power Sweep Measurements at 20.2 GHz

SUMMARY TABLE OF MEASURED RF PRE-DISTORTION*ALL VALUES CAN BE TUNED

With 0 dBm Input 17.7 GHz 18.95 GHz 20.2 GHz

Pout 19 dBm 20 dBm 19 dBm

Phase Lag -13° -15° -11.9°

Gain Expansion 1.0 dB 0.7 dB 0.4 dB

1025 W. NASA Boulevard Melbourne, FL 32919