The design of microstrip coupled resonator filters includes determination the coupling coefficients between filter units. In this paper a novel modeling procedure exploiting prior knowledge neural approach is proposed as an efficient alternative to standard electromagnetic (EM) simulations and models based purely on artificial networks (ANNs). It has similar accuracy EM requires less training d...

In this work the usage of a composite right/lefthanded (CRLH) metamaterial transmission line resonator as a transmit/receive coil for 7 Tesla magnetic resonance imaging (MRI) is investigated. On the basis of zeroth-order resonant antennas (ZORAs) a zeroth-order resonant coil (ZORC) was designed. Due to a constant current distribution along the element, a homogenous magnetic field is achieved in...

This letter presents a miniaturized dual-mode compositeright/left-handed line resonator with wide harmonic suppression. The pure right-handed microstrip transmission line adopt 36◦ electrical length instead of 90◦, thus the size of the dual-mode filter can be reduced significantly meanwhile the spurious response suppression are improved effectively. A prototype filter is designed and implemente...

Design, simulation, and measurement of a compact filtering microstrip antenna is presented. A feed line, two hairpin resonators, and a rectangular patch are integrated to form the filtering antenna. The elements together function as a third order bandpass filter with Chebyshev equal ripple response of 0.043 dB at midband frequency of 2.0 GHz. The rectangular patch acts not only as a radiating e...

High performance CPW and novel microstrip ring resonators at 30 GHz and 40 GHz have been fabricated on Si substrates, using an optimized proton-implantation process. Very good insertion loss and resonator characteristics, close to those from ideal electromagnetic simulations, were measured. In contrast, the ring resonators on VLSI-standard Si, without implantation, have worse transmission and r...

A novel microstrip coupled-line directional coupler is proposed in this paper. It is based on the introduction of a complementary split ring resonator and dumbbell-like defected ground structure on the coupled lines to strongly enhance the designed backward coupling. The designed frequency band is from 1.2 to 1.5GHz. The coupler is fabricated and tested. The insertion loss is less than 3.5 dB. ...

This paper demonstrates that it is possible to find an ideal filter response (Chebyshev, Butterworth,..) considering the antenna as the last resonator of a filter under certain circumstances related with the antenna performance and the bandwidth of the filtenna device. If these circumstances are not accomplished, we can achieve excellent performance as well, by means of an iterative process the...

In this letter, a compact wideband bandpass filter (BPF) with wide stopband is proposed based on the substrate integrated defected ground structure (SIDGS) and folded stepped-impedance resonator (FSIR). Such SIDGS can not only allocate specific resonance size but also introduce different harmonic positions compared traditional microstrip line resonator. Meanwhile, due to discrepant of FSIR, res...

In this paper, authors present an optimized reconfigurable electrically small planar microstrip patch antenna loaded with square shaped split ring resonator metamaterial with micro-splits. In this the length of SRR is optimized so that the loaded antenna resonant at a frequency that lies in frequency regime in which the isolated SRR shows the metamaterial properties. To achieve the frequency tu...