The antenna is a communication, used to transmit & receive signals to represent some information. The first antenna was invented by Germans in the year 1888 and used forwireless communicationpurposes. These antennas can broadcast both microwave & radio signals. There are differenttypes of antennasava...
Low-cost dielectric lensSpherical lensMillimeter-wavePrinted dipole array (PDA) antennaHigh-gain antennasIn this paper, two different millimeter-wave printed dipole array (PDA) antenna prototypes for high-gain applications are proposed. The antenna prototypes are designed, simulated, fabricated, and ...
4475109Inflatable antenna1984-10-02Dumas343/797 4287518Cavity-backed, micro-strip dipole antenna array1981-09-01Ellis343/795 4218685Coaxial phased array antenna1980-08-19Ellis343/789 3836976CLOSELY SPACED ORTHOGONAL DIPOLE ARRAY1974-09-17Monser et al.343/797 ...
Linearly polarized beam with highly directional far-field emission can be realized from an array of Yagi-Uda optical antenna2,12. Besides the Yagi-Uda antenna, a practical transmitting antenna consists of single nanoaperture surrounded by shallow grooves in gold film has been demonstrated to ...
Design of V-band high-gain printed log periodic dipole array (PLPDA) antenna loaded with a low-cost spherical dielectric lens is introduced. The proposed antenna consists of microstrip-line-fed log-periodic dipole antenna designed to ope... OM Haraz,AR Sebak,S Alshebeili - 《International Jou...
Antenna arrays are normally characterized in terms of their far-field radiation patterns, beam width and directive gain. However, for some applications the array is required to act as a lens and is focused in the near-field zone. The focusing is done by adjusting the phase of the array elem...
The reflection measurements of the arrays in the anechoic chamber were made using the vertical arch, moving simultaneously and symmetrically the source antenna and the receiver from the normal of the array (close to the “vertical” configuration in ref.39, see also FigsS7andS8). The arrays wer...
A. Skalare, Th. De Graauw, and H. van de Stadt, "A planar dipole array antenna with an elliptical lens," Microwave Opt. Technol. Lett., vol. 4, no. 1, pp. 9-12, 1991.A. Skalare, Th. de Graauw, y H. van de Stadt, ―A Planar Dipole Array Antenna with an Elliptical Lens...
The presented photoconductive dipole array antenna improves the gain as well as directivity; therefore, it is useful to enhance the imaging capabilities to address the considerations such as limited depth-of-field (DoF), that is, the distance over which an object is considered in focus, and ...
The multiple layer dipole phased array of the present invention may also employ a feed-through lens arrangement to simplify the feed network.KUAN M. LEERAYMOND TANGNAM S. WONGWong, N. S., Lee, K. M., & Tang, R. (1996). Multi-frequency band phased-array antenna using multiple layered...