New effective dielectric constant model for ultra-high speed microstrip lines on multilayer dielectric substrates: effect of conductor-dielectric interphase

2003 ◽  
Author(s):  
H.T. Vo ◽  
C. Davidson ◽  
F.G. Shi
Keyword(s):  
Dielectric Constant ◽  
High Speed ◽  
Effective Dielectric Constant ◽  
Dielectric Substrates ◽  
Microstrip Lines ◽  
Ultra High Speed ◽  
Multilayer Dielectric

scholarly journals Modeling and Measurements of Novel Monolithic Filters

2008 ◽  
Vol 2008 ◽  
pp. 1-8
Author(s):  
Aly H. Aly ◽  
Badawy El-Sharawy ◽  
Adalbert Beyer
Keyword(s):  
Dielectric Constant ◽  
Quality Factor ◽  
Bandpass Filter ◽  
Narrow Band ◽  
Dielectric Materials ◽  
Ferroelectric Materials ◽  
Dielectric Substrates ◽  
High Dielectric Materials ◽  
High Dielectric ◽  
Multilayer Dielectric

This paper presents novel multilayer tuneable highQ-filters based on hairpin resonators including ferroelectric materials. This configuration allows the miniaturization of these filters to a size that makes them suitable for chip and package integration and narrow-band applications. The main focus was miniaturizing filters with coupled loops using multilayer dielectric substrates. A further goal was to increase the quality factor of these distributed filters by embedding high dielectric materials in a multilayer high- and low-k(dielectric constant) substrate that is supported by LTCC technology. An improved W-shape bandpass filter was proposed with a wide stopband and approximately 5% bandwidth.

New Analytical Model for the Dielectric Loss of Microstrip Lines on Multilayer Dielectric Substrates: Effect of Conductor-Dielectric Interphase

2006 ◽  
Vol 3 (2) ◽  
pp. 61-66
Author(s):  
Hung T. Vo ◽  
Frank G. Shi
Keyword(s):  
Dielectric Loss ◽  
Closed Form ◽  
Finite Thickness ◽  
Dielectric Substrate ◽  
Thickness Effect ◽  
Closed Form Expression ◽  
High Frequencies ◽  
Dielectric Substrates ◽  
Microstrip Lines ◽  
Multilayer Dielectric

The existing CAD formulae for dielectric loss of microstrip lines on substrate are complicated and inaccurate at high frequencies. In particular, no closed-form expression has been obtained for the dielectric loss of microstrip lines on multi-layer dielectric substrate by including the conductor-substrate interphase effect, although attempts have been made to study the finite thickness effect of the conductor and dielectric substrate. The present work represents the first attempt to obtain a closed-form CAD formula for the dielectric loss of microstrip lines on dielectric substrates by considering the effect of conductor-substrate interphase. Our simple and accurate model systematically considers the effect of the interphase between the microstrip line and substrate by using a quasi-TEM approach and is shown to be supported by the available experimental data.

scholarly journals THE FREQUENCY CHARACTERISTICS OF COUPLED MICROSTRIP LINES / SUSIETŲJŲ MIKROJUOSTELINIŲ LINIJŲ DAŽNINĖS CHARAKTERISTIKOS

2013 ◽  
Vol 5 (2) ◽  
pp. 173-180
Author(s):  
Audrius Krukonis ◽  
Šarūnas Mikučionis
Keyword(s):  
Dielectric Constant ◽  
Transmission Lines ◽  
Characteristic Impedance ◽  
Frequency Characteristics ◽  
Effective Dielectric Constant ◽  
Matching Layer ◽  
Microstrip Lines ◽  
Signal Conductor ◽  
Voltage Current Characteristic ◽  
Difference Time

The article deals with the use of the finite difference time domain method and uniaxial perfectly matching layer for analysis of frequency characteristics of coupled microstrip transmission lines. It describes calculation techniques for voltage, current, characteristic impedance and effective dielectric constant of each signal conductor. Besides, it analyses the frequency dependencies of characteristic impedance and the effective dielectric constant. Article in Lithuanian. Santrauka Straipsnyje aptariamas baigtinių skirtumų laiko srities metodo taikymas ir absorbuojančio sluoksnio taikymas susietųjų mikrojuostelinių linijų analizei. Sudaryti ir išnagrinėti baigtinių skirtumų laiko srities metodu grįsti susietųjų mikrojuostelinių linijų matematiniai modeliai. Pateikiamos kiekvieno iš laidininkų įtampos, srovės, charakteringojo impedanso ir efektyviosios dielektrinės skvarbos skaičiavimo metodikos. Aptariami skaičiavimo metodikų pranašumai, trūkumai, pateikiamos jų tobulinimo kryptys.

Recent Advances in Ultra-High-Speed Waveguide Photodiodes for Optical Communication Systems

2009 ◽  
Vol E92-C (7) ◽  
pp. 922-928 ◽  
Author(s):  
Kikuo MAKITA ◽  
Kazuhiro SHIBA ◽  
Takeshi NAKATA ◽  
Emiko MIZUKI ◽  
Sawaki WATANABE
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Recent Advances ◽  
Ultra High Speed ◽  
Optical Communication Systems

Interior Winding Synchronous Motor for Reducing Iron Loss at Ultra-High-Speed

2020 ◽  
Author(s):  
Ryoken Masuda ◽  
Manabu Horiuchi ◽  
Mitsuhide Sato ◽  
Yinggang Bu ◽  
Masami Nirei ◽  
...  
Keyword(s):  
High Speed ◽  
Synchronous Motor ◽  
Iron Loss ◽  
Ultra High Speed
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