scholarly journals An AMC Backed Folded Dipole Slot Antenna Based on CMOS Process

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Guo Qing Luo ◽  
Lin Qi Wu ◽  
Xiao Hong Zhang
Keyword(s):  
Surface Wave ◽  
Dielectric Permittivity ◽  
Silicon Substrate ◽  
Slot Antenna ◽  
Cmos Process ◽  
Magnetic Conductor ◽  
High Dielectric Permittivity ◽  
On Chip ◽  
Folded Dipole ◽  
High Dielectric

A fold dipole slot antenna backed by artificial magnetic conductor (AMC) structure based on a standard 0.18 um CMOS process on chip application is firstly proposed in this paper. Conventional silicon antenna on chip (AoC) suffers from low radiation performance because the most electromagnetic energy is restricted in silicon substrate as surface wave for its high dielectric permittivity. The energy is dissipated as thermal for low resistivity of silicon substrate. AMC constructed by a periodic 6*6 square patch array is adopted as background to improve radiation performance of the proposed folded dipole slot AoC. Gain of the proposed AMC backed AoC is improved about 3.5 dB compared with that of the same AoC without AMC background.

Polyimide/nanosized CaCu3Ti4O12 functional hybrid films with high dielectric permittivity

2013 ◽  
Vol 102 (4) ◽  
pp. 042904 ◽  
Author(s):  
Yang Yang ◽  
Ben-Peng Zhu ◽  
Zhi-Hong Lu ◽  
Zi-Yu Wang ◽  
Chun-Long Fei ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Hybrid Films ◽  
High Dielectric Permittivity ◽  
High Dielectric

scholarly journals Thermoplastic Polyurethane/Lead Zirconate Titanate/Carbon Nanotube Composites with Very High Dielectric Permittivity and Low Dielectric Loss

2020 ◽  
Vol 4 (3) ◽  
pp. 137
Author(s):  
Gayaneh Petrossian ◽  
Nahal Aliheidari ◽  
Amir Ameli
Keyword(s):  
Dielectric Loss ◽  
Dielectric Permittivity ◽  
Lead Zirconate Titanate ◽  
Thermoplastic Polyurethane ◽  
Lead Zirconate ◽  
Low Dielectric ◽  
High Dielectric Permittivity ◽  
Tan Δ ◽  
High Dielectric ◽  
Very High

Ternary composites of flexible thermoplastic polyurethane (TPU), lead zirconate titanate (PZT), and multiwalled carbon nanotubes (MWCNTs) with very high dielectric permittivity (εr) and low dielectric loss (tan δ) are reported. To assess the evolution of dielectric properties with the interactions between conductive and dielectric fillers, composites were designed with a range of content for PZT (0–30 vol%) and MWCNT (0–1 vol%). The microstructure was composed of PZT-rich and segregated MWCNT-rich regions, which could effectively prevent the formation of macroscopic MWCNT conductive networks and thus reduce the high ohmic loss. Therefore, εr increased by a maximum of tenfold, reaching up to 166 by the addition of up to 1 vol% MWCNT to TPU/PZT. More importantly, tan δ remained relatively unchanged at 0.06–0.08, a similar range to that of pure TPU. εr/tan δ ratio reached 2870 at TPU/30 vol% PZT/0.5 vol% MWCNT, exceeding most of the reported values. This work demonstrates the potential of three-phase polymer/conductive filler/dielectric filler composites for efficient charge storage applications.

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