Results 231 to 240 of about 8,504 (267)

Antenna-on-Chip radiation pattern characterization

2019
Millimeter-wave antenna measurements severely rely on the use of on-wafer probes. For an Antenna-on-chip (AoC), due to the tiny size of the chip (1~2 mm2), the radiation pattern will still be influenced when the probe tip is near the AoC under test (AUT).
Liu, Q., Johannsen, Ulf, van Beurden, Martijn C., Smolders, A. B.   +3 more
openaire   +2 more sources

Improving radiation pattern of microstrip antennas

2006 First European Conference on Antennas and Propagation, 2006
It was shown in [1] that polarization currents in the dielectric substrate of microstrip antennas cause deterioration of the radiation pattern. We further study this effect analytically and numerically, with emphasis on techniques for improving the radiation pattern.
Marija M. Nikolic, Antonije R. Djordjevic   +1 more
openaire   +1 more source

Radiation patterns of interfacial dipole antennas

Radio Science, 1982
The radiation pattern of an infinitesimal electric dipole is calculated for the case where the dipole is vertically located on the plane interface of two dielectric half spaces and for the case where the dipole is lying horizontally along the interface.
N. Engheta, C. H. Papas, C. Elachi
openaire   +1 more source

Radiation Pattern Reconfigurable Horn Antenna

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
A radiation pattern reconfigurable horn antenna (RHA) capable of steering its main beam in three directions in the semi-sphere space corresponding to θ ∈ {−25°, 0°, 25°}, is presented. The RHA consists of a driven X-band (10 GHz-11.5 GHz) horn antenna, a reconfigurable parasitic layer and a dielectric loaded truncated pyramid (DLTP). The surface of the
Mehmet Tanagardi, Md Asaduzzaman Towfiq, Bedri A. Cetiner   +2 more
openaire   +1 more source

On Polarization Coloration of the Antenna Radiation Pattern

Journal of Communications Technology and Electronics, 2018
Problems arising in the course of practical implementation of the principles and of radio polarimetry are considered. It is shown how to ensure “polarization coloration” of the radiation pattern. The influence of various interferences and the noise, which inevitably exist during information transmission, is considered.
B. P. Eliseev, A. I. Kozlov
openaire   +1 more source

Radiation pattern control in microstrip antennas

Proceedings of 1996 Canadian Conference on Electrical and Computer Engineering, 2002
The far field radiation from a microstrip antenna is investigated numerically. Such an antenna has several electrical and geometrical parameters that can be used in shaping its radiation patterns. Among these the ground plane size and shape have the least effect on the antenna circuit parameters and may be used as the controlling parameters.
L. Shafai, S. Noghanian
openaire   +1 more source

Radiation Pattern Synthesis for Broadcast Antennas

IEEE Transactions on Broadcasting, 1972
Two computer programs that can be used for the synthesis of radiation patterns of linear and planar arrays are described. The programs are listed in the Appendix and were written for the GE-645 computer, in Fortran IV language, and in a time-sharing mode.
J. Perini, M. Idselis
openaire   +1 more source

Antenna Array Radiation Pattern Optimization

2026 25th International Symposium INFOTEH-JAHORINA (INFOTEH)
This paper presents the application of an optimization framework to the radiation pattern synthesis of a spherical antenna array. The Particle Swarm Optimization (PSO) algorithm is employed as a representative optimization technique; however, the proposed procedure is not restricted to PSO and can be extended to other global optimization methods.
Vanja Mandrić, Slavko Rupčić, Bogdan Pavković   +2 more
openaire   +1 more source

Scanning synthetic radiation pattern antennas

Radioelectronics and Communications Systems, 2010
It is proposed conception of development of new type transmitting-receiving scanning antennas, which are called antennas with synthetic radiation pattern. It is based on application of movement of radiating (receiving) element together with synthesizing of radiation pattern (RP) by means of SAR for processing of recorded information about radiated and ...
openaire   +2 more sources

Plotting satellite antenna radiation patterns

IEEE Antennas and Propagation Magazine, 1991
Approaches for visualizing satellite antenna radiation patterns are presented. Gain-level contours drawn over a geographical map give the clearest quantitative information. A three-dimensional surface plot displays the qualitative shape of the radiation pattern more naturally.
openaire   +1 more source