Achieving Ceramic-like RF Capacitor Requirements with Organic-based Materials

2010 ◽  
Vol 2010 (1) ◽  
pp. 000072-000075 ◽  
Author(s):  
Jin-Hyun Hwang ◽  
John Andresakis ◽  
Bob Carter ◽  
Yuji Kageyama ◽  
Fujio Kuwako
Keyword(s):  
Dielectric Constant ◽  
Form Factor ◽  
High Dielectric Constant ◽  
High Volume ◽  
Electrical Performance ◽  
Frequency Range ◽  
Large Area ◽  
Low Loss ◽  
Capacitance Variation ◽  
High Dielectric

New and novel organic-based composite materials for the use of embedded RF capacitors have been developed to address the important material issues by means of functional filler and resin chemistry. Combining different fillers with appropriate chemistries, the net composite can be made thermally stable while retaining the high dielectric constant and low loss. These composites attained dielectric constant of above 7 without compromising the quality factor in GHz frequency range. In addition, measurement of capacitance variation as a function of temperature (TCC) showed flatter TCC profile, resulting in TCC of ±30 ppm/°C over the temperature range −55°C to 125°C. It can be incorporated into organic chip package and, unlike ceramic-based LTCC they can utilize large area processing that is typical, and available in high volume manufacturing. This material is formulated for RF module designers to successfully implement embedded RF capacitors into their organic chip package designs and thus improve form factor, electrical performance and possibly reduce overall costs.

Structure-induced high dielectric constant and low loss of CNF/PVDF composites with heterogeneous CNF distribution

2010 ◽  
Vol 21 (30) ◽  
pp. 305702 ◽  
Author(s):  
L L Sun ◽  
B Li ◽  
Y Zhao ◽  
G Mitchell ◽  
W H Zhong
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Loss ◽  
High Dielectric

Compact antenna using ZST low-loss high dielectric constant material

2014 ◽  
Author(s):  
Dragos C. Geambasu ◽  
Tuta Leontin ◽  
Marian G. Banciu ◽  
Liviu Nedelcu ◽  
Ioan Nicolaescu
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Low Loss ◽  
Compact Antenna ◽  
High Dielectric

Constructing a segregated carbon nanotube network in polyamide-based composites towards high dielectric constant and low loss

2019 ◽  
Vol 245 ◽  
pp. 204-207 ◽  
Author(s):  
Wei Li ◽  
Mao Wang ◽  
Ting Huang ◽  
Nan Zhang ◽  
Jinghui Yang ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Carbon Nanotube ◽  
High Dielectric Constant ◽  
Low Loss ◽  
Carbon Nanotube Network ◽  
High Dielectric

High dielectric constant and low loss in polymer composites filled by self-passivated zinc particles

2012 ◽  
Vol 72 ◽  
pp. 9-11 ◽  
Author(s):  
Ye Zhang ◽  
Yao Wang ◽  
Yuan Deng ◽  
Mao Li ◽  
Jinbo Bai
Keyword(s):  
Dielectric Constant ◽  
Polymer Composites ◽  
High Dielectric Constant ◽  
Low Loss ◽  
High Dielectric

High-Dielectric Constant Insulators and the AMLCD Process: Is Amorphous BST a Candidate?

1999 ◽  
Vol 558 ◽  
Author(s):  
P. Andy ◽  
D. Neumayer ◽  
P. Duncombe ◽  
C. Dimitrakopoulos ◽  
F. Libsch ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Charge Compensation ◽  
Electrical Performance ◽  
Coupling Coefficients ◽  
Active Matrix ◽  
Aperture Ratio ◽  
Visual Artifacts ◽  
High Dielectric ◽  
And Storage

ABSTRACTAs the active matrix flat panel market continues to grow, manufacturers are constantly looking for ways of gaining an advantage in the marketplace typically through increased performance, expanded functionality and/or reduced cost. The continuing trend of larger panel sizes and higher resolution poses interesting challenges for manufacturers in the areas of image quality and brightness. In particular, it has been clearly shown that as pixel dimensions shrink, relative crosstalk coupling coefficients increase while the area available for pixel electrodes and storage capacitors (Cδ,t) decreases, so that charge compensation drive schemes must be employed to eliminate visual artifacts. One approach to minimizing crosstalk and flicker is to increase Cδ,t, however this requires increased pixel area, usually at the expense of brightness due to smaller aperture ratio. Depending on design and process flow, it may be possible to replace the typical Cδ,t, insulator, SiNx:H, with a material of higher dielectric constant thereby vastly improving electrical performance without sacrificing brightness.

A new single/few-layered graphene oxide with a high dielectric constant of 106: contribution of defects and functional groups

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14768-14779 ◽  
Author(s):  
K. Santhosh Kumar ◽  
Suresh Pittala ◽  
Srinath Sanyadanam ◽  
Pradip Paik
Keyword(s):  
Dielectric Constant ◽  
Graphene Oxide ◽  
Dielectric Permittivity ◽  
Functional Groups ◽  
High Dielectric Constant ◽  
Frequency Range ◽  
Temperature Range ◽  
High Dielectric Permittivity ◽  
High Dielectric

In this study, we introduce a single/few-layered graphene oxide (GO) synthesized with ultrasonication, and demonstrate its high dielectric permittivity in the frequency range of 20 Hz to 2 MHz and temperature range of 30 °C to 180 °C.

Polytypic intergrowths in barium polytitanate dielectric ceramics

1986 ◽  
Vol 44 ◽  
pp. 456-459
Author(s):  
P. K. Davies
Keyword(s):  
Dielectric Constant ◽  
High Dielectric Constant ◽  
Ceramic Materials ◽  
Microwave Filters ◽  
Potential Candidate ◽  
Low Loss ◽  
The Past ◽  
Communications Industry ◽  
Dielectric Ceramics ◽  
High Dielectric

Over the past ten years several new ceramic materials have been developed for incorporation in high quality microwave integrated filters. A suitable ceramic dielectric microwave resonator material must have low loss in the microwave region, a low temperature coefficient of dielectric constant, and a high dielectric constant, typically 35-40. Most of the research conducted on the ceramic systems has focused upon phases in the BaO-TiO2 system. Many of the barium polytitanates have dielectric properties suited toward their use in microwave filters. Ba2Ti9O2O and BaTi4O9 are used commercially in the communications industry, and BaTi5O11 may also be a potential candidate for use in these systems.

High dielectric constant and low loss of polymeric dielectric composites filled by carbon nanotubes adhering BaTiO3 hybrid particles

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29017-29021 ◽  
Author(s):  
Z. D. Liu ◽  
Y. Feng ◽  
W. L. Li
Keyword(s):  
Carbon Nanotubes ◽  
Dielectric Constant ◽  
Chemical Vapor Deposition ◽  
Polymer Composites ◽  
Vapor Deposition ◽  
High Dielectric Constant ◽  
Chemical Vapor ◽  
Hybrid Particles ◽  
Low Loss ◽  
High Dielectric

We reported the preparation of carbon nanotubes adhering BaTiO3 nanoparticles (BT@CNTs) via chemical vapor deposition (CVD) and the method to obtain the polymer composites with high dielectric constant and low loss.

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