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为您找到包含“光子带隙(PBG)”的内容共2

Liang Yan,Tang Bihua,Li Shulan,Yu Cuiping,Wu Yongle

In this paper, a novel compact microstrip low-pass filter with nonuniform microstrip resonant cells is designed. The proposed filter is formed by cascading the four nonuniform 1-D microstrip photonic bandgap (PBG) cells, while each unit cell was designed with different cutoff frequency etched on the 50Ω microstrip line. The demonstration low-pass filter with the cutoff frequency of 2.2GHz is designed, fabricated and measured. The measurement results show that the band rejection level is more than 20dB from 2.8GHz to 10GHz, the insertion is less than 2dB, and the length of it is 5.6cm. Compared with the conventional filter, this method overcomes the problems of narrow stop-band, low harmonic suppression and has an advantage of miniature circuit size. Moreover, it does not need to consider the impedance matching.

2010-10-22

School of Electronic Engineering, Beijing University of Posts and Telecommunications,School of Electronic Engineering, Beijing University of Posts and Telecommunications,School of Electronic Engineering, Beijing University of Posts and Telecommunications,School of Electronic Engineering, Beijing University of Posts and Telecommunications,School of Electronic Engineering, Beijing University of Posts and Telecommunications

#Electrics, Communication and Autocontrol Technology#

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Feng Xu,Hongyuan Zhou

In this letter, the microstrip antenna with square patch array on the front surface and two-dimensional photonic band gap (PBG) on the ground has been proposed. The ground etching structure can suppress the resonance of the harmonic frequencies effectively of the antenna while the square patch array can increase the gain comparing with the normal microstrip patch antenna. The simulation and measurement results of this novel antenna are illustrated. The comparison of radiation patterns between this novel antenna, the microstrip antenna only with ground etching structure and the normal microstrip antenna is also presented.

2014-05-13

School of Electronic Science & Engineering, Nanjing University of Posts and Telecommunications,School of Electronic Science & Engineering, Nanjing University of Posts and Telecommunications

#Electrics, Communication and Autocontrol Technology#

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