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Description

NLTL-6794SM is a MMIC non-linear transmission line (NLTL) based comb generator. This NLTL offers excellent phase noise performance over a low 100MHz to 1 GHz input frequency range with output tones beyond 30 GHz. NLTL-6794SM is fabricated with GaAs Schottky diode-based varactors and packaged into a surface mount 6x6 mm2 QFN.

Specifications

The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for the NLTL used in the forward direction with a +20 dBm 250MHz sine wave input and no bias resistor (open circuit) unless otherwise stated[1].

Min and Max limits apply only to our connectorized units and are guaranteed at TA=+25°C. All bare die are 100% DC tested and visually inspected.

Parameter

Test Conditions

Min

Typical

Max

Units

Input (Port 1) Frequency Range

 

0.1

 

1

GHz

Output (Port 2) Frequency Range

 

0.1

 

30

Input Power

 

 

+20[2]

 

dBm

Highest Frequency Harmonic Output[3]

100 MHz Input

 

6.1

 

GHz

250 MHz Input

 

23.25

 

500 MHz Input

 

29.5

 

750 MHz Input

 

27

 

1 GHz Input

 

22

 

Approximate Harmonic Output Power with 100 MHz Input[4]

PHarmonic = -0.82 * (Harmonic Order) - 10.7

dBm

Approximate Harmonic Output Power with 250 MHz Input5

PHarmonic = -0.6 * (Harmonic Order) – 3.3

Approximate Harmonic Output Power with 500 MHz Input5

PHarmonic = -1.1 * (Harmonic Order) + 4.2

Approximate Harmonic Output Power with 750 MHz Input5

PHarmonic = -1.9 * (Harmonic Order) + 5.5

Approximate Harmonic Output Power with 1 GHz Input5

PHarmonic = -2.8 * (Harmonic Order) + 6.0

[1] Square Wave input generated using either the ADM1-0026PA or the APM-7098PA amplifier at +7V/-0.3Vand +8V/+8V respectively.

[2] Input power to square wave driver amps is lower but high enough to saturate the amplifier.  Power levels in square wave plots refer to input power to the amplifier, not the amplifier’s output power.

[3] The Highest Frequency Harmonic Output was determined as the highest frequency harmonic that was above a -60dBm threshold as seen on a spectrum analyzer.

[4] Approximate Harmonic Output Power equations are determined by taking points on the output comb on a spectrum analyzer and creating a linear fit equation to relate the harmonic order to its power level.  Consequently, the equations offer an approximation of output harmonic level, not an exact measurement.

Packages

Download our 3D models here.
NLTL-6794SM Multiplier Package Diagram
NLTL-6794SM GaAs MMIC Non-Linear Transmission Line

Model

Stock

Price


Volume Pricing

ModelPackage
NLTL-6794SMSurface Mount (SM)
EVAL-NLTL-6794Connectorized Eval Fixture (EVAL)

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