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PRODUCT
SPECIFICATION
CP0402 / CP0603 High Directivity Couplers
Test Jigs
GENERAL DESCRIPTION
These jigs are designed for testing the CP0402 and CP0603 High Directivity Couplers using a Vector Network
Analyzer.
They consist of a dielectric substrate, having 50Ω microstrips as conducting lines and a bottom ground plane
located at a distance of 0.254mm from the microstrips.
The substrate used is Neltec’s NH9338ST0254C1BC.
The connectors are SMA type (female), ‘Johnson Components Inc.’ Product P/N: 142-0701-841.
Both a measurement jig and a calibration jig are provided.
The calibration jig is designed for a full 2-port calibration, and consists of an open line, short line and through
line. LOAD calibration can be done by a 50Ω SMA termination.
MEASUREMENT PROCEDURE
When measuring a component, it can be either soldered or pressed using a non-metallic stick until all four
ports touch the appropriate pads. Set the VNA to the relevant frequency band. Connect the VNA using a 10dB
attenuator on the jig terminal connected to port 2. Follow the VNA’s instruction manual and use the calibration
jig to perform a full 2-Port calibration in the required bandwidths.
Place the coupler on the measurement jig as follows:
Input (Coupler) Î Connector 1 (Jig) Termination (Coupler) Î Connector 3 (Jig)
Coupling (Coupler)
Î Connector 2 (Jig) Out (Coupler) Î Connector 4 (Jig)
To measure I.Loss connect:
Connector1 (Jig) Î Port1 (VNA) Connector3 (Jig) Î 50Ω
Connector2 (Jig)
Î 50Ω Connector4 (Jig) Î Port2 (VNA)
To measure R.Loss and Coupling connect:
Connector1 (Jig) Î Port1(VNA) Connector3 (Jig) Î50Ω
Connector2 (Jig)
Î Port2 (VNA) Connector4 (Jig) Î 50Ω
To measure Isolation connect:
Connector1 (Jig) Î 50Ω Connector3 (Jig) Î 50Ω
Connector2 (Jig)
Î Port2(VNA) Connector4 (Jig) Î Port1 (VNA).
Measurement Jig
Calibration Jig
Short line to
GND.
Open
line
Load &
Through
Load &
Through
Connector 1
Connector 2
Connector 4
Connector 3
Connector
Johnson
P/N 142-0701-841
AVX Thin Film Operation ITF Series CP0603V0836CNTR Specification RevB
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