Evaluation Technique for Complex Permittivity of Mid-Loss Underfill Materials by a Cut-Off Circular Waveguide Method in Millimeter Wave Bands

2014 ◽  
Vol E97.C (10) ◽  
pp. 972-975
Author(s):  
Takashi SHIMIZU ◽  
Yoshinori KOGAMI
1996 ◽  
Vol 430 ◽  
Author(s):  
O. Tantot ◽  
M. Chatard-Moulin ◽  
P. Guillon

AbstractThe use of a circular waveguide radiating into a multi-layered media allows the characterization of heterogeneous and fluid subtances. Many microwave measurement devices, based on reflection coefficient measurements, are subjected to air gap problems that introduce some inaccuracy in the determination of the unknown complex permittivity of the materials. Our purpose is to try and take the air gap into account in these measurements.


2019 ◽  
Vol 44 (15) ◽  
pp. 3765 ◽  
Author(s):  
Yayun Cheng ◽  
Fei Hu ◽  
Yan Hu ◽  
Ziran Zhao ◽  
Yingxin Wang

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