Pin vs. Pout Correlation SolutionCurve Alignment

Purpose

• Correlate Test Platform 2 to Test Platform 1 using Pin vs. Pout sweep.

• Demonstrate second approach for correlating two Pin vs. Pout curves.

Definition

• Test Platform 1 - Reference platform• Test Platform 2 - Uncorrelated platform• Relative Pout difference/delta – The difference

between Pout (from Test Platform 1) – Pout (from Test Platform 2) at the same Pin level

Typical Uncorrelated Pin vs. Pout curves across 2 different RF testing platforms

Compression Point (P1dB) Alignment 1

Compression Point (P1dB) Alignment 2

Pout Offsetting

But… In compression region

• Where is the P1dB, P2dB, etc…?

Pin vs. Pout in Compression Region

Force P1dB Alignment 1

Force P1dB Alignment 2

Pout Offsetting

Second Solution:Curve Alignment

Assumptions• RF source and power reading instruments are

well calibrated across each platforms

• PA Characteristics of Pin vs. Pout is approximately the same across different RF testing platforms– This is the backbone of my curve alignment

algorithm

• Curve alignment is the basis for correlation

Assumption: PA Characteristics of Pin vs. Pout is approximately the same across different RF testing

platforms

Pin vs. Pout in Compression Region

Pin offsetting aimed to minimize relative Pout difference Standard Deviation within any choice of range

Pin Offsetting Sweep Results TableTest Platform 1 Test Platform 2 Test Platform 2 relative Pout differencePin Pout Pout Pin + 0 Pin - 1 Pin - 2 Pin - 3 Pin - 4 Pin - 5 Delta + 0 Delta - 1 Delta - 2 Delta - 3 Delta - 4 Delta - 5-10 18.3 15.7 -10 -11 -12 -13 -14 -15 2.6 -9.5 18.6 16.1 -9.5 -10.5 -11.5 -12.5 -13.5 -14.5 2.5 -9 18.8 16.5 -9 -10 -11 -12 -13 -14 2.3 1.8

-8.5 19 16.85 -8.5 -9.5 -10.5 -11.5 -12.5 -13.5 2.15 1.75 -8 19.2 17.2 -8 -9 -10 -11 -12 -13 2 1.6 1.1

-7.5 19.4 17.5 -7.5 -8.5 -9.5 -10.5 -11.5 -12.5 1.9 1.5 1.1 -7 19.55 17.8 -7 -8 -9 -10 -11 -12 1.75 1.4 1 0.5

-6.5 19.7 18.1 -6.5 -7.5 -8.5 -9.5 -10.5 -11.5 1.6 1.3 0.9 0.5 -6 19.85 18.3 -6 -7 -8 -9 -10 -11 1.55 1.25 0.9 0.5 0

-5.5 20 18.5 -5.5 -6.5 -7.5 -8.5 -9.5 -10.5 1.5 1.2 0.9 0.5 0.1 -5 20.15 18.7 -5 -6 -7 -8 -9 -10 1.45 1.15 0.85 0.5 0.1 -0.4

-4.5 20.3 18.9 -4.5 -5.5 -6.5 -7.5 -8.5 -9.5 1.4 1.1 0.8 0.5 0.1 -0.3-4 20.4 19.05 -4 -5 -6 -7 -8 -9 1.35 1.1 0.8 0.5 0.15 -0.25

-3.5 20.5 19.2 -3.5 -4.5 -5.5 -6.5 -7.5 -8.5 1.3 1.1 0.8 0.5 0.2 -0.2-3 20.6 19.35 -3 -4 -5 -6 -7 -8 1.25 1.05 0.8 0.5 0.2 -0.15

-2.5 20.7 19.5 -2.5 -3.5 -4.5 -5.5 -6.5 -7.5 1.2 1 0.8 0.5 0.2 -0.1-2 20.8 19.65 -2 -3 -4 -5 -6 -7 1.15 0.95 0.75 0.5 0.2 -0.1

-1.5 20.9 19.8 -1.5 -2.5 -3.5 -4.5 -5.5 -6.5 1.1 0.9 0.7 0.5 0.2 -0.1-1 21 19.9 -1 -2 -3 -4 -5 -6 1.1 0.9 0.7 0.5 0.25 -0.05

-0.5 21.05 20 -0.5 -1.5 -2.5 -3.5 -4.5 -5.5 1.05 0.9 0.7 0.5 0.3 00 21.1 20.1 0 -1 -2 -3 -4 -5 1 0.9 0.7 0.5 0.3 0.05

0.5 21.15 20.2 0.5 -0.5 -1.5 -2.5 -3.5 -4.5 0.95 0.85 0.7 0.5 0.3 0.11 21.2 20.3 1 0 -1 -2 -3 -4 0.9 0.8 0.7 0.5 0.3 0.1

1.5 21.25 20.4 1.5 0.5 -0.5 -1.5 -2.5 -3.5 0.85 0.75 0.65 0.5 0.3 0.12 21.3 20.5 2 1 0 -1 -2 -3 0.8 0.7 0.6 0.5 0.3 0.1

2.5 21.35 20.55 2.5 1.5 0.5 -0.5 -1.5 -2.5 0.8 0.7 0.6 0.5 0.35 0.153 21.4 20.6 3 2 1 0 -1 -2 0.8 0.7 0.6 0.5 0.4 0.2

3.5 21.45 20.65 3.5 2.5 1.5 0.5 -0.5 -1.5 0.8 0.7 0.6 0.5 0.4 0.254 21.5 20.7 4 3 2 1 0 -1 0.8 0.7 0.6 0.5 0.4 0.3

4.5 21.5 20.75 4.5 3.5 2.5 1.5 0.5 -0.5 0.75 0.7 0.6 0.5 0.4 0.35 21.5 20.8 5 4 3 2 1 0 0.7 0.7 0.6 0.5 0.4 0.3

5.5 21.5 20.85 5.5 4.5 3.5 2.5 1.5 0.5 0.65 0.65 0.6 0.5 0.4 0.36 21.5 20.9 6 5 4 3 2 1 0.6 0.6 0.6 0.5 0.4 0.3

Std Dev 0.282799 0.192505 0.101366 0 0.117011 0.212109

Pin (relative Pout difference Standard Deviation minimized)

Pout Offset by averaging relative Pout difference within any choice of range

Thank You

Ming Jiang