The effects of tuning the parameters of an annular-ring circular patch antenna with a cross-slot are analyzed and discussed. Then, based on this structure, a novel antenna with an electromagnetic bandgap cell system, which consists of a 4×4 annular-slot array in the groundplane, is designed and both numerically and experimentally evaluated. When compared to the annular-ring patch antenna on a g...

A new type of spoof surface plasmon polaritons (SSPPs) developed from conventional substrate integrated waveguide (SIW) using ring slots and vias is proposed in this paper. The asymptotic frequency lower cutoff the SSPP structure can be easily tuned by changing width SIW walls radius slot, respectively. trapezoidal microstrip line a small slot are used for efficient mode conversion to smoothly ...

A new band-pass narrow-band, miniaturized and single resonance within a wide range of frequency band frequency selective surface structure with lumped capacitors suitable for low frequency and narrowband waveguide filter applications is presented. The filter structure consists of five unit cells in one direction with notch square ring elements each consists of two lumped capacitors placed on th...

This paper presents an investigation conducted on annular ring slot loaded microstrip antenna operating in triple band and it is found to exhibit frequency tunability with the slot angle. Return loss of the proposed antenna has been investigated as a function of slot angle ? with fixed coaxial feed location. It is found that the said parameter of antenna depends heavily on the slot angle ?. Res...

In this paper, a compact ultra-wideband microstrip-fed annular ring antenna with band notch characteristics for wireless local area network (WLAN) and dedicated short-range communication (DSRC) is proposed. The proposed antenna comprises an annular ring patch and a partial ground plane with a rectangular slot. The notched frequency band is achieved by etching a partial annular slot in the lower...

New design of obtaining a dual frequency bands antenna operate on the dual frequency bands of the Global System for Mobile Communications (GSM) (Lower band = 900 MHz, Upper band = 1.9 GHz) with a single-feed square micro-strip antenna are proposed and experimentally studied. The proposed designs are based on the same patch dimensions configured with one rectangular slot in the form of cut insid...

A novel frequency reconfigurable antenna based on substrate integrated waveguide (SIW) for S-band and C-band applications is proposed. The employs a SIW resonant cavity structure with rectangular-ring slot long slit etched the top surface. An extra via post introduced to adjust resonance of low-frequency mode independently without affecting impedance matching high-frequency or decreasing gain. ...