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Unlike conventional filters and antennas that are separated, a filtering antenna with 3rd-order Chebyshev response is presented in this paper. At first, a 3rd-order Chebyshev bandpass filter is designed by utilizing coupling matrix. Then, an aperture is etched on the narrow wall of the last resonator of the filter for energy radiation. As demonstration, an example of the filtering antenna with center...
In this paper, a bandpass filter with good suppression of both the second and third harmonic is designed and implemented. To reduce the size of the filter, quarter-wavelength stepped-impedance resonator (SIR) is used, the filter consists of four SIR resonators and a narrow line between the two resonators in the middle. One transmission zero is introduced in the upper stopband by mixed electric and...
In this paper, a novel ultra-wideband (UWB) bandpass filter (BPF) with excellent passband performance and skirt selectivity is designed and fabricated. The proposed UWB filter consists of dual symmetric multiple-mode resonators (MMRs) and four defected ground structures. Six modes, including three odd modes and three even modes, could be designed within UWB band, and two transmission zeros are at...
In this paper, a compact quarter-wavelength stepped-impedance resonator bandpass filter is proposed, two extra transmission zeros are implemented by source-load coupling between the feedlines, a filter with two resonators is designed, each resonator consists of a low-Z section and a high-Z section, good performance is achieved both in passband and stopband. Demonstrator filter is designed on the Rogers...
The grounded guard trace ring is usually utilized to suppress the crosstalk noise interference in high-speed printed circuit boards or IC packages. Although the guard ring can reduce crosstalk, its performance is greatly affected by the effectiveness of its design. This paper first investigates the mechanism of the crosstalk noise cancellation with a grounded guard ring. The paper then discusses and...
In switching-mode power converters, planar transformers are one of the most important near magnetic field sources and CM chokes is one of the most important victims. This paper first analyzes the near magnetic field distribution of planar transformers and the effects of near magnetic field couplings on CM chokes. Based on these analyses, three techniques to suppress near magnetic field coupling's...
A novel compact microstrip line ultra-wideband (UWB) bandpass filter (BPF) using the proposed stub-loaded multiple-mode resonator (MMR) is presented. This MMR is formed by loading three hourglass stubs in shunt to a high impedance microstrip line in center and two symmetrical locations, respectively. By properly adjusting the dimensions of the stubs, the first four resonant modes of this MMR can be...
This paper investigates whether dynamics in key macroeconomic indicators in China significantly explain stock returns. The dataset covers the period from January 1996 to December 2006. Using the impulse response, the study finds that in terms of magnitude, persistence, and significance, the transmission of shocks emanating from industrial production and money supply to stock market are more pronounced...
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