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In this paper, the low-profile radiation-pattern controllable antenna is presented. The diskloaded monopole antenna (DLMA) with four slits is designed for low-profile radiation element. And, planar CRLH-PE composited of the mushroom structures is designed. It is cleared that the DLMA and the CRLH-PE with the height of 0.03λ at 750 MHz can couple each other. The radiation patterns can be controlled...
The pattern-controllable novel small antenna with CRLH-PE has been proposed. The distance between the radiator and the parasitic element of the proposed antenna is 1/20 of wave length. The directivity in arbitrary direction is obtained by resonation of an appropriate PTLH-PE in the usable frequency band of the dipole antenna. The minimization of the radiator is future study.
In this paper, topology design optimization for electromagnetic materials, a left- handed leaky wave antenna for millimeter-wave applications, and left-handed dipole antennas have been presented along with some thoughts for future investigation. All have been the subject of recent metamaterial studies at TCRL and TEMA. Metamaterials will clearly open up a whole new field for automotive electronics...
We propose a novel structure of a CRLH LW antenna with 45-degree inclined linear polarization for automotive applications. The CRLH LW antenna has been examined in order to achieve high gain by changing the period of the unit cell. The peak gain of the CRLH LW antenna is improved by 1.8, 2.2, and 3.1 dB in the backward, broadside, and forward directions of radiation. Moreover, patches were added to...
We have proposed a novel structure of frequency-independent steerable composite right/left-handed (CRLH) leaky wave (LW) antenna in the millimeter- wave band. It has advantages of wide beam scanning. The proposed antenna has features that a movable dielectric slab is placed above the CRLH LW antenna, and the radiation angle can be steered by changing the distance between the slab and the antenna using...
A novel structure for a frequency-independent steerable composite right/left-handed (CRLH) leaky wave (LW) antenna in the millimeter-wave band is proposed. This has the advantages of wide beam scanning and low profile, and is a suitable structure for mass-production. The proposed antenna has features wherein a movable dielectric slab is placed above the CRLH LW antenna, and the radiation angle can...
The automotive antenna application using balanced composite right-left handed (CRLH) metamaterials is overviewed in this paper. The theoretical design issue for the CRLH leaky-wave antenna (LWA) design is digested focusing on the balanced CRLH LWA, and an application example of the CRLH LWA for automotive radar antennas with monochromatic beam steering functionality is presented
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