This paper presents a stacked dielectric resonator antenna with a drilled hollow cylinder. The antenna has thirteen dielectric layers with different permittivity ( r 1 =12 and r 2 =4.4) on a FR4 epoxy substrate having a dielectric constant of 4.4 with 0.8mm thickness. It uses one hollow ...
High-performance FR4 Dielectric Constant 370HR dielectric constant is an FR-4 Micro Printed wiring network with an elevated 181°C to in which high thermal conductivity and durability are requested. 370HR composite and prepreg products are produced of a unique multipurpose epoxy high-performance resi...
The following is the dielectric constant of some typical materials (at 1Mhz): Vacuum 1 Pure PTFE 2.1 GY PTFE 2.2-2.3 GX-PTFE 2.55 Cyanate ester / glass 3.2 Cyanate ester / quartz 2.8-3.4 Polyimide quartz 3.5-3.8 Polyimide glass 4.0-4.6 Epoxy resin - glass (FR4) 4.4-5.2 Non-woven ...
Considering the dielectric constant of a material is important forsignal integrityandimpedanceconsiderations, which are critical factors for high-frequency electrical performance. The Er for most PCB materials is in the range of 2.5 to 4.5. The dielectric constant varies with frequency and generally dec...
Compared to arrays fabricated from Cu-clad FR4 board, the screen-printed arrays are resonance shifted owing to the magnitude of the dielectric constant and... T Kistenmacher,S Francomacaro,B Brawley,... - Meta-materials at the Milli-, Micro, & Nanoscale: November 27-december 1, Boston, Ma...
The dielectric constant of the cylindrical pellet is measured to be 49.3. The dielectric resonator has a diameter of 14 mm and height of 1.17 mm. The resonator is energized with a 50 惟 microstrip line etched on FR4 epoxy performing as a Cylindrical Dielectric Resonator Antenna (CDRA). The ...
of the grounding plate, the microstrip feeder line, the parasitic patches and an SMA connector are pec; the material of a dielectric substrate is FR4-epoxy; the input coaxially feeds the SMA connector; and the dielectric resonator is made from a material with a dielectric constant of 12. By...
By utilizing the new technologies, the world's first ceramic film formed at room temperature on an FR4 printed circuit board was successfully created (Figures 1 and 2). The maximum dielectric constant of the newly created ceramic film was 400, ten times the dielectric constant of ceramic combine...
介电常数说明(The dielectric constant shows).doc,介电常数说明(The dielectric constant shows) http: / / / blog / static / 96466020101124111515344 / (介电常数网址) pcb介电常数知识 2010 - 12 - 24 11: 15: 15 | 分类: 電子設計 | 标签: 介电常数 阻抗 电容 谐
Also, the substrate is formed by using two layers of substrate of FR4 epoxy (e(r) = 4.34) and RF35 (e(r) = 3.4) to achieve three degenerate orthogonally modes TE111, TE113 and TE115. Antenna is hexagonal in shape with the material alumina having dielectric constant (e(r) = 9.92)...