Broadband Microwave Dielectric Properties of Polymers

1990 ◽  
Vol 214 ◽  
Author(s):  
W. M. Robertson ◽  
Y. Pastol ◽  
G. Arjavalingam ◽  
J.-M. Halbout ◽  
G. V. Kopcsay
Keyword(s):  
Dielectric Properties ◽  
Conducting Polymers ◽  
Microwave Dielectric Properties ◽  
Electromagnetic Transients ◽  
Frequency Range ◽  
Single Experiment ◽  
Broad Frequency Range ◽  
Microwave Dielectric ◽  
Properties Of Materials ◽  
Transient Spectroscopy

ABSTRACTThe recently developed coherent microwave transient spectroscopy (COMITS) technique is capable of determining the complex dielectric properties of materials over a broad frequency range (15–140 GHz), in a single experiment. COMITS is based on the radiation and detection of picosecond duration electromagnetic transients by optoelectronically pulsed antennas. The essential features of the COMITS technique are described and representative results on dielectric and conducting polymers are presented.

scholarly journals Preparation, crystal structure, and dielectric characterization of Li2W2O7 ceramic at RF and microwave frequency range

2017 ◽  
Vol 07 (01) ◽  
pp. 1720001 ◽  
Author(s):  
Jinwu Chen ◽  
Chunchun Li ◽  
Dan Wang ◽  
Huaicheng Xiang ◽  
Liang Fang
Keyword(s):  
Dielectric Properties ◽  
Single Phase ◽  
Microwave Dielectric Properties ◽  
Microwave Frequency ◽  
Solid State Reaction Method ◽  
Frequency Range ◽  
Conventional Solid State Reaction ◽  
Dielectric Characterization ◽  
Microwave Dielectric

Single phase Li2W2O7 with anorthic structure was prepared by the conventional solid-state reaction method at 550[Formula: see text]C and the anorthic structure was stable up to 660[Formula: see text]C. The dielectric properties at radio frequency (RF) and microwave frequency range were characterized. The sample sintered at 640[Formula: see text]C exhibited the optimum microwave dielectric properties with a relative permittivity of 12.2, a quality factor value of 17,700[Formula: see text]GHz (at 9.8[Formula: see text]GHz), and a temperature coefficient of the resonant frequency of [Formula: see text]232[Formula: see text]ppm/[Formula: see text]C as well as a high relative density [Formula: see text]94.1%. Chemical compatibility measurement indicated Li2W2O7 did not react with aluminum electrodes when sintered at 640[Formula: see text]C for 4[Formula: see text]h.

Crystal structure, bond energy, Raman spectra, and microwave dielectric properties of Ti‐doped Li 3 Mg 2 NbO 6 ceramics

2020 ◽  
Vol 103 (8) ◽  
pp. 4321-4332 ◽  
Author(s):  
Gang Wang ◽  
Dainan Zhang ◽  
Jie Li ◽  
Gongwen Gan ◽  
Yiheng Rao ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Dielectric Properties ◽  
Raman Spectra ◽  
Bond Energy ◽  
Microwave Dielectric Properties ◽  
Microwave Dielectric

Effect of water content on microwave dielectric properties of building materials

2020 ◽  
Vol 263 ◽  
pp. 120107
Author(s):  
Romain Damez ◽  
Philippe Artillan ◽  
Arthur Hellouin de Menibus ◽  
Cédric Bermond ◽  
Pascal Xavier
Keyword(s):  
Dielectric Properties ◽  
Water Content ◽  
Building Materials ◽  
Microwave Dielectric Properties ◽  
Effect Of Water ◽  
Microwave Dielectric
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