Impedance control FPC
Characteristics of product
- By combining the characteristic impedance, the reflection of electric signal in pattern is prevented and more accurate high frequency / high speed transmittance is enabled.
- The high-precision pattern formation technology controls the characteristic impedance.
- For the micro strip line configuration, the desired impedance characteristic can be realized easily and the radiation noise can be reduced.
- It is possible to measure the characteristic impedance by creating test coupon in product operation work.
Actual performance of spec
- Microstrip Single end 25ohm,50ohm,75ohm ±10%
- Microstrip Differential 50ohm,100ohm ±10%
- Stripline Single end 50ohm±10% , Differential 100ohm ±10%
Appropriate material
- Polyimide material (PI)
:Loss tangent (10GHz) 0.003 , Electric permittivity (10GHz) 3.2
Moisture absorptivity 1% - Liquid crystal polymer (LCP)
:Loss tangent (10GHz) 0.0016 , Eectric permittivity (10GHz) 3.0
Moisture absorptivity 0.04%
Proven applications
- Optical communication module
- LVDS communication cable
- Hard disk inspection device
Transmission loss S21 Comparison
・Black line : Microstrip LCP material
・Bule line : Microstrip Polyimide material
Example of product configuration
