We propose a novel plasmonic Bragg reflector (PBR) based on graphene with multiple-step silicon structure. The monolayer graphene bears locally variable optical properties by modulation of electric fields, and the periodical change of effective refractive index on graphene can be obtained by external bias voltage in the mid-infrared region. Through patterning the PBR units into multiple-step st...

This paper presents a wideband dual-polarized filtering antenna with high suppression level and wide stopband. In the proposed antenna, driven patch operates in TM10 mode an inherent radiation null caused by higher TM12. Four dual-strip structures connected feeding probes are placed below to achieve capacitive coupling, thus resulting low-frequency sharp roll-off rate. The introduction of paras...

Design of a novel triband bandpass filter is presented for wireless communications systems. The based on inter-coupled stepped impedance resonators and inter-digitally coupled to the input/output ports. configuration circuit consists open-loop that are electromagnetically each other using inverted T-shaped open stubs. intrinsic characteristics structure generates five transmission zeros results...

In this decade, compact bandpass filters are essential components in microwave systems for passing desired signals and suppressing unwanted signals. Microstrip bandpass filter is rapidly going up in the design and fabrication in RF front-ends of wireless communication systems. The microstrip structure is well-known because of its light weight and simple design method. As knowing, the bandpass f...