Second Harmonic Distortion Performance Test

This test applies to the following models:

At each test frequency a -15 dBm (-30 dBm for CXA) signal is applied to the mixer. One or more low pass filters are inserted between the source and the DUT to prevent the second harmonic of the source from artificially raising the second harmonic product as it is displayed on the DUT. The Marker Delta function is used to measure the level of the distortion product relative to the carrier. The Second Harmonic Intercept point (SHI) is calculated through the equation  SHI = Mixer Level - Distortion.

 

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Required Test Equipment

Test Equipment

Recommended Model Number

Microwave Signal Generator #1

PSG Models
(see equipment list)

Power Meter

N1914B

Microwave Power Sensor

N8485A 

Microwave Power Splitter

11667B

50 MHz Low Pass Filter

Telonic Berkeley TLA 50-5AB2

300 MHz Low Pass Filter
(2 required)

Telonic Berkeley TLP 300-4AB4

1.8 GHz Low Pass Filter
(2 required)

RLC L-1636

5.0 GHz Low Pass Filter

RLC F-30-5000-RF

8.0 GHz Low Pass Filter

RLC F-30-8000-RF

12.4 GHz Low Pass Filter

RLC F-30-12.4-RF

BNC Cable

8120-1840 

Coaxial Cable, 3.5 mm

11500E

3.5 mm (f) to 3.5 mm (f) adapter
(for 3.5mm source)

83059B

2.4 mm (f) to 3.5 mm (f) adapter
(for 2.4 mm source)

11901B

BNC (m) to 3.5 mm (f) adapter

1250-1250

3.5 mm (f) to Type-N  (m) adapter

08485-60005

3.5 mm (m) to 3.5 mm (m)
(3 required)

1250-1748

BNC (f) to 3.5 mm (m) adapter

1250-1200

Type-N (m) to 3.5 mm (m) adapter

1250-1743

Connection Setups

In the following setups, cables are designated as solid lines and direct connections are designated as dashed lines.

Power Meter Calibration

 

Second Harmonic Distortion Test Setup