Double-sided probing Measurement System

Vertical probing station

• The novel double-sided probing station is designed for vertical path of device under test. For example, PCB via, IC test socket, and BGA substrate, etc.

• Double-sided probing can reduce the errors from dual paths measurement of traditional probing, and improve the limitation of the bandwidth for more applications.
  
  
• Verification and comparison with using the double-sided probing and EM simulator result that were matching up to 20 GHz.

• Jthink also forced on designing though kit using on double sided station. The types of though kit showed as below:

• √ GS to GS Type, pitch from 550um to 1250 um.
• √ GS to SG Type, pitch from 550um to 1250 um.
• √ GSG to GSG Type, pitch from 550um to 1250 um.
• √ Right angle Types, pitch from 550um to 1250 um.
• √ Differential Pair, pitch from 550 um to 1250um.

• The training kit of microwave circuit design followed Microwave Engineering by David M. Pozar.
• The training kit of contact pad covered pitch 550 um to 1250um.
• The microwave circuits including:

• √ 50 ohm microstrip line for length 45 and 90 mm
• √ 100 ohm differential pair for length 45mm
• √ Maximally flat for stepped-impedance LPF
• √ 0.5 dB Equal-ripple for stepped-impedance LPF
• √ Band pass filter used capacitive coupled series resonators with 0.5 dB equal-ripple
• √ Wilkinson power divider with equal power splits and unequal power splits
• √ Branch-Line Quadrature hybrid power divider

• High performance microwave probes.
• The probes including:

• √ DC probe
• √ Single end probe,
  - Pitch: 250um to 1600 um
  - Frequency Range: DC to 20 GHz.
• √ Differential probe,
  - Pitch: 500um to 1200 um
  - Frequency range: DC to 20 GHz.