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In this work, a chipless tag antenna employing retro-reflective array for ultrawideband radio-frequency identification (UWB-RFID) application is demonstrated. Different from conventional RFID tags, by using retro-reflective antenna, the proposed antenna is not sensitive to its relative direction to the reader, leading to longer reading range in practice. Folded slots are etched in the transmission...
A modified Vivaldi antenna is proposed with improved gain and phase centre stability. By applying a high permittivity dielectric substrate, the realized gain is enlarged while maintaining the compactness of the designed antenna. With a redistributed comb-shape corrugation the phase centre stability of the antenna is significantly improved. The designed modified Vivaldi antenna covers the lower UWB...
A miniaturized dual port multiple-input multiple-output (MIMO) antenna, operating in ultrawideband (UWB) frequency band communication is presented in this paper. The antenna elements are located in side-by-side configuration. The suggested antenna exhibits a good impedance match (VSWR ≤ 2) covering frequency band of 2.5 GHz–10.4 GHz, while exhibiting high isolation. A structure consisting of a strip...
This paper presents characterization of Ultra-wide band diamond shaped patch monopole (DSM) antenna based on the singularity expansion method (SEM) model. The diamond shaped patch is designed to provide Ultra-wide bandwidth (UWB) of 12 GHz (3 to 15 GHz). To extract the complex poles in the SEM based model, Matrix Pencil method (MP) is used to provide the accurate complex poles and residues for the...
A new low profile ultra-wideband (UWB) monopole-type antenna is present in this paper. It is top-loaded with the metal plate to reduce its height. The feed point is located at the bottom of cylinder. Three shorting stubs on the edge and the central metallic circular truncated cone connected to the ground are used to further reduce the size of the antenna. The antenna has a 56% relative bandwidth covering...
With the rapid development of communication capacity, the demand for ultra-wideband (UWB, 3.1–10.6 GHz, allocated by the Federal Communications Commission of the United States, FCC) antenna has been increasing in wireless communication system. However, some other narrow band such as WLAN band (5.15–5.825 GHz), WiMAX band (3.4–3.6 GHz) and C-band satellite communication system (3.7–4.2 GHz) will inevitably...
The design of a microstrip monopole antenna with extra ultra-wide band performance, small size and enhanced radiation gain is presented. For sake of progress research in modern antennas, looking at the current research trend in broadband (BB), wideband (WB), ultra-wide band (UWB) antennas as well as their role to the emerging nanotechnology of electronics engineering, the motivation is to furthermore...
A novel ultra-wideband (UWB) antenna with dual band-notched characteristics is proposed. Which based on Complementary split ring resonator (CSRR) structure. The antenna is based on circle patch monopole antenna. This paper introduce the Monopole ultra-wideband antenna etched CSRR structure, and by turning the size of CSRR, it's easily achieved dual band-notched characteristics. As the significant...
In this paper, a compact multiple-input-multiple-output (MIMO) antenna is proposed for Ultra-wideband (UWB) applications. The proposed MIMO antenna is comprised by two symmetrically placed half slot antenna elements which one side of the slot is open to the air. Two antenna elements share the same ground plane, and each opening of the half slot gapes to the opposite directions. For covering the entire...
Ultra wide band system is a short-haul wireless communication with advantages of low power consumption, high data rate, resistance to interference, co-existence with narrowband systems and so on. A new-type ultra wide band antenna is proposed to solve the problems of miniaturization and integration. To realize on-chip system and combine with other functional microwave monolithic integrated circuits,...
In this talk, we will propose a filter-integrated method to improve the stability of the radiation patterns of the compact planar UWB antenna, especially increasing the broadside realized gain values at the higher portion of the UWB frequency range. As is known, with the rapid development of UWB technology for commercial communication applications, many practical applications, such as portable devices,...
The optimized metasurface layer is introduced into antenna design, which is generated by dividing a 2-D rectangular area into some grids, then the initial 2-D chromosome population is produced randomly. The size of population is the number of grids, “1” represent the metallized areas and “0” represent the areas without metal. Based on this model, we optimized two parasitic metasurface layer under...
This paper provides a printed anti-interference antenna with excellent wide tunable and reconfigurable multiple filtering bands for ultra-wideband applications. The anti-interference characteristics are realized by the use of stubs and resonators to filter out unwanted narrowband signal interferences. Also, the wide tunable filtering function is implemented by adjusting the dimensions of these designed...
In this paper, a microstrip-fed multi-band antenna is proposed for wireless communication applications. The proposed multi-band characteristics are implemented by etching ratio period defected microstrip structures (RP-DMSs) into a 50Ω microstrip line to construct desired stop bands in a wide-band antenna. As a result, a multi-band antenna is realized for S-band, C-band and X-band communication systems...
A conformal elliptical tapered slot antenna has been designed and developed for urtrawideband (UWB) wireless communications. It is studied mounted on a cylindrical surface and is proven to operate equally well compared to its planar rival. Return loss, gain and E and H plane radiation pattern simulations are presented covering the whole ultrawideband. The antenna has demonstrated good performance...
A novel ultra-wideband (UWB) antenna with tri-band-notched characteristics is proposed. Which based on Complementary split ring resonator (CSRR) structure and slots structure. The antenna is based on circle patch monopole antenna. This paper introduce the Monopole ultra-wideband antenna etched CSRR structure and return type slot, and by turning the size of CSRR, it's easily achieved tri-band-notched...
The design and realization of a low-profile linearly ultra-wideband (UWB) antenna array operating across 2–10 GHz with wide scan has been presented. The array element consists of a pair of identical inverted-L shaped patches and is excited by an external wideband balun to achieve low cross-polarization. Each inverted-L shaped patch is comprised of a horizontal patch and a vertical trapezoidal patch...
In this paper, we have proposed a compact, planar dual-polarized slot antenna for ultra-wideband (UWB) applications. Two orthogonal polarizations are realized by employing different feeding techniques which lead to achieving high isolation. The horizontal polarization is excited by an elliptically tapered slot while the vertical polarization is obtained by a monopole with a half-circle slot. The two...
In this paper, a compact dual-resonator loaded ultra-wideband (UWB) multiple-input-multiple-output (MIMO) antenna, which has a bandstop-filter-like response (second-order rejection band) with high frequency selectivity and controllable bandwidth at the aimed notched band, is proposed. The MIMO antenna consists of two rectangular printed monopole (PM) elements and a simple stepped ground stub to enhance...
This paper proposes a novel heart-shaped band-notched UWB antenna with compact and simple structure. The antenna comprise of a microstrip feeding line, a heart-shaped patch to achieve UWB characteristic, and a defected ground with bevels to obtain good impedance match and stable gain in the operating band. The band-notched characteristic is achieved by a U-shaped slot on the patch. The measured results...
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