Abstract
In this paper, a new miniaturized wide-pass-band filter at U band based on composite right/left- handed transmission line (CRLH TL) is implemented. The CRLH TL contributed to a broadband filter is a balanced structure with a small size of only 1.428 mm*0.5530 mm. The frequency characteristics are simulated and the results show that the 3 dB band width of the proposed filter is about 13.5 GHz from 45.8 GHz to 59.3 GHz. The insertion loss is quite flat through the pass-band and the return loss is relatively low.
Highlights
Band-pass filters (BPF) are essential components in the modern radar and wireless communication system whose performance can greatly influence the behavior of the whole system
In 2003, a resonator based on composite right/left-handed transmission line (CRLH TL) [1] is proposed by Caloz [2] [3], having attracted great interest from the scientific and engineering field owing to its potential applications of negative effective permeability
CRLH TL metamaterials are composed of lefthanded (LH) and right-handed (RH) components [4] [5], which has been approved to be able to realize miniaturization of structure [6] [7] utilizing its dispersive phase properties [8]
Summary
Band-pass filters (BPF) are essential components in the modern radar and wireless communication system whose performance can greatly influence the behavior of the whole system. Small size, flat group delay, better frequency selection characteristic, and broadband filter are needed in practical Engineering. The resonator of the filter is the key device that determines the main characteristics of the filter. In 2003, a resonator based on composite right/left-handed transmission line (CRLH TL) [1] is proposed by Caloz [2] [3], having attracted great interest from the scientific and engineering field owing to its potential applications of negative effective permeability. CRLH TL metamaterials are composed of lefthanded (LH) and right-handed (RH) components [4] [5], which has been approved to be able to realize miniaturization of structure [6] [7] utilizing its dispersive phase properties [8].
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