Various complementary split ring resonators (CSRRs) are used as defected ground structures (DGSs) in the bandpass filter (BPF) design for different communication applications. In this paper, a hybrid CSRR has been introduced as a DGS in the ground plane of a dual-mode microstrip BPF to produce a new compact filter with dual band response. The proposed CSRR structure is essentially based on the ...

the aim of this study was to use ahp method to rank the obstacles to improving professional ethics in sport media. in the first step, the existing obstacles were identified by review of literature, searching the authentic websites and finally interview with sport media experts. after this step, the hierarchy tree was portrayed to rank the obstacles and then the analytical hierarchy process (ahp...

A step-impedance bandpass filter is presented for multimode wireless LANs. The filter has a new dual-band feature of two tunable passbands at desired frequencies and high out-of-band suppression, generated by incorporating step-impedance resonators in a comb-filter topology. It saves more than half the circuit size compared with the switch-type dual-band topology. The simulation and measurement...

A novel compact microstrip dual-band bandpass filter(BPF) is developed with remarkably improved stopband characteristics. Two square open-loop resonators are embedded in a U-shaped resonator to achieve a significant size-reduction of the filter. Meanwhile, a cross-coupling between nonadjacent resonators is exploited to produce multiple transmission zeros in the stopbands of the filter. As a con...

This paper presents a new ultra-wideband (UWB) bandpass filter (BPF) with sharp roll-off and dual-notched bands. The filter consists of a triangle ring multi-mode resonator (MMR) with the stub-loaded resonator (SLR) for controlling the two transmission zeros at 2.8 / 11 GHz, the embedded open-circuited stub and the asymmetric tight coupled input/output (I/O) lines for introducing the dual notch...

A novel method is proposed to synthesize dual-band bandpass filters (BPFs) from a prototype lowpass filter. By implementing successive frequency transformations and circuit conversions, a new filter topology is obtained which consists of only admittance inverters and series or shunt resonators, and is thereby easy to be realized by using conventional distributed elements. A microstrip dual-band...

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...

Fenomena yang ada bahwa air tanah di daerah komplek kampus terpadu UPN Veteran Yogyakarta berbau dan berwarna coklat kemerahan, apabila tersebut juga menimbulkan endapan pada bak penampung air. Berdasarkan fenomena tersebut, maka diduga mengandung zat besi (Fe) Mangan (Mn) cukup tinggi. Guna mengatasi hal diperlukan upaya mereduksi kadar sesuai dengan peraturan disyaratkan. Fokus utama dari pen...

electrospinning is a method of nanofiber filter media production. by this method, it is possibleto produce media with nanofiber in the range of nanometer to micrometer. nanofibrous media provide a large specific surface area in a finite volume thus they are suitable for filtration applications. in this study, nanofiber non-woven membranes production of nylon-6 by electrospinning method is inves...