Critical coupling of the inverted-F antenna by increasing effective inductance

2011 ◽  
Vol 53 (4) ◽  
pp. 737-740 ◽  
Author(s):  
Sinhyung Jeon ◽  
Hyeongdong Kim
Keyword(s):  
Critical Coupling ◽  
Effective Inductance

scholarly journals Critical behavior of the 2d scalar theory: resumming the N8LO perturbative mass gap

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Gustavo O. Heymans ◽  
Marcus Benghi Pinto
Keyword(s):  
Perturbation Theory ◽  
Critical Behavior ◽  
State Of The Art ◽  
Critical Coupling ◽  
Scalar Theory ◽  
Perturbative Series ◽  
Supercritical Region ◽  
Mass Gap ◽  
Perturbative Result ◽  
Symmetric Phase

Abstract We apply the optimized perturbation theory (OPT) to resum the perturbative series describing the mass gap of the bidimensional ϕ4 theory in the ℤ2 symmetric phase. Already at NLO (one loop) the method is capable of generating a quite reasonable non-perturbative result for the critical coupling. At order-g7 we obtain gc = 2.779(25) which compares very well with the state of the art N8LO result, gc = 2.807(34). As a novelty we investigate the supercritical region showing that it contains some useful complimentary information that can be used in extrapolations to arbitrarily high orders.

scholarly journals High-Q-Factor Tunable Silica-Based Microring Resonators

Photonics ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 256
Author(s):  
Yue-Xin Yin ◽  
Xiao-Pei Zhang ◽  
Xiao-Jie Yin ◽  
Yue Li ◽  
Xin-Ru Xu ◽  
...  
Keyword(s):  
Optical Communications ◽  
Microring Resonator ◽  
Microring Resonators ◽  
Q Factor ◽  
Notch Depth ◽  
Critical Coupling ◽  
Practical Application ◽  
Coupling Condition ◽  
High Q ◽  
Racetrack Resonator

A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator. Then, 40 mW electronic power was applied on the microheater on the arm of MZI, and a maximal notch depth of about 13.84 dB and a loaded Q factor of 4.47 × 106 were obtained. The proposed MRR shows great potential in practical application for optical communications and integrated optics.

Quasi‐Bound States in the Continuum with Temperature‐Tunable Q Factors and Critical Coupling Point at Brewster's Angle

2021 ◽  
pp. 2000290
Author(s):  
Bing‐Ru Wu ◽  
Jhen‐Hong Yang ◽  
Pavel S. Pankin ◽  
Chih‐Hsiang Huang ◽  
Wei Lee ◽  
...  
Keyword(s):  
Bound States ◽  
Critical Coupling ◽  
Coupling Point ◽  
Q Factors ◽  
The Continuum

Bandwidth tunable lter based on ideal quasi-critical coupling state in WGM cavity

2021 ◽  
pp. 1-1
Author(s):  
Jiwei Li ◽  
Yue Hu ◽  
Xufan Gan ◽  
Feng Gao ◽  
Wending Zhang ◽  
...  
Keyword(s):  
Critical Coupling

scholarly journals Stereocontrolled total synthesis of (+)-vinblastine

2003 ◽  
Vol 75 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Satoshi Yokoshima ◽  
T. Ueda ◽  
S. Kobayashi ◽  
A. Sato ◽  
Takeshi Kuboyama ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Coupling Reaction ◽  
Radical Cyclization ◽  
Critical Coupling ◽  
Efficient Manner ◽  
Complete Control ◽  
Highly Efficient ◽  
Indole Synthesis

Stereocontrolled total synthesis of (+)-vinblastine (1) has been achieved using a novel radical-mediated indole synthesis developed in our laboratories. The isothiocyanate 18, prepared readily from quinoline 17, underwent a facile addition of the malonate anion to give 19. The o-alkenylthioanilide 19 was then converted to indole 20 by radical cyclization and protection. (−)-Vindoline (2) was prepared from this key intermediate 20 in a highly efficient manner. The indole core of the 11-membered intermediate 3 was constructed similarly from quinoline. The critical coupling reaction between 2 and the chloroindolenine derived from 3 proceeded with complete control of stereochemistry to give the desired product 66 in 97 % yield, which could be successfully converted to (+)-vinblastine (1).

Total absorption by degenerate critical coupling

2014 ◽  
Vol 104 (25) ◽  
pp. 251110 ◽  
Author(s):  
Jessica R. Piper ◽  
Victor Liu ◽  
Shanhui Fan
Keyword(s):  
Total Absorption ◽  
Critical Coupling

scholarly journals Complete optical absorption in hybrid halide perovskites based on critical coupling in the communication band

2020 ◽  
Vol 28 (9) ◽  
pp. 14151 ◽  
Author(s):  
Zi-qiang Cheng ◽  
Xin Luo ◽  
Liang Xu ◽  
Xiang Zhai ◽  
Ling-ling Wang
Keyword(s):  
Optical Absorption ◽  
Critical Coupling ◽  
Halide Perovskites
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