Circuit World: Volume 44 Issue 3

Frequency changing technique for efficient fast start-up RF energy harvesting

Sajjad Shieh, Mahmoud Kamarei

The purpose of the paper is to present a frequency-changing technique to realize a fast start-up radio frequency (RF) energy harvester.

Chaos in a second-order non-autonomous Wien-bridge oscillator without extra nonlinearity

Quan Xu, Qinling Zhang, Tao Jiang, Bocheng Bao, Mo Chen

The purpose of this paper is to develop a simple chaotic circuit. The circuit can be fabricated by less discrete electronic components, within which complex dynamical behaviors…

Design and experimental analysis of MEMS-based Ku band phase shifter

Prithivi Rajan V., Punitha A.

This paper aims to design a radio frequency micro-electro-mechanical system (RF MEMS)-based phase shifter using chamfered coplanar waveguide (CPW) transmission line (t-line) with…

Influential mechanism of printed circuit board properties on micro hole drilling temperature

Hongyan Shi, Xiaoke Lin, Qiuxin Yan, Xiong Liang

The purpose of this paper was to study the influence of properties of printed circuit boards (PCBs) on the temperature during micro drilling and obtain the influential mechanism…

Synchronization, anti-synchronization and circuit realization of a novel hyper-chaotic system

Yanjun Lu, Li Xiong, Yongfang Zhang, Peijin Zhang, Cheng Liu, Sha Li, Jianxiong Kang

This paper aims to introduce a novel four-dimensional hyper-chaotic system with different hyper-chaotic attractors as certain parameters vary. The typical dynamical behaviors of…

Improvement of plating uniformity for copper patterns of IC substrate with multi-physics coupling simulation

Jing Xiang, Yuanming Chen, Shouxu Wang, Chong Wang, Wei He, Huaiwu Zhang, Xiaofeng Jin, Qingguo Chen, Xinhong Su

Optimized plating conditions, included proper designs of insulating shield (IS), auxiliary cathode (AC) and different patterns, contribute to the uniformity enhancement of copper…