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Antenna Array


Antenna array

Complex directional antenna consists of separate near-omnidirectional antennas (radiating elements) positioned in the space and driven by high-frequency …

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Matching waveguide radiators in antenna arrays with broadband and wide-angle scanning



We present a method for matching waveguide radiators used in wide bandwidth phased antenna arrays with wide-scanning angle. In order to achieve matching, the following parameters are used: the geometrical parameters of waveguides, the dielectric parameters of materials inside the waveguides, waveguide transformators and reactive waveguide at the aperture, and also a matching device in the form of inductive rods and capacitive diaphragm. Antennas

Modified: 04/06/2008
Tags: waveguide , radiator , antenna array , broadband , scanning
Path: Home / Publications / Archives / 2008 / Matching waveguide …



Broadband waveguide radiators in phased antenna arrays with circular polarization



It is presented the electrodynamics analysis of complex cross-section waveguide phased-array antennas with dual polarization. Energetic, polarization and frequency characteristics of cross-ridged circular and square waveguides as elements in phased-array antennas with dielectric covers and supports are studied. An analysis chart is introduced to aid the computation of their mode of operation with sector scanning and frequency band. Antennas

Modified: 04/05/2008
Tags: broadband , waveguide , radiator , antenna array , PAA , polarization
Path: Home / Publications / Archives / 2008 / Broadband waveguide …



Broadband waveguide radiators in phased antenna arrays with linear polarization



Phased antenna arrays (PAA) of waveguides with complex cross sections are analyzed in this work. Particularly, the analysis focuses on linearly polarized waveguides with dielectric matching units (inserts, covers and waveguide transformers). The study of power and frequency characteristics of these PAA in scanning sectors is included. An optimization method for the design of this kind of arrays in order to achieve broad frequency band and scanning sectors is also presented. Antennas

Modified: 04/04/2008
Tags: broadband , waveguide , radiator , antenna array , PAA , polarization
Path: Home / Publications / Archives / 2008 / Broadband waveguide …



Numeric modeling of microstrip array antennas out of longitudinal broadband oscillators



The mathematical model of longitudinal printed radiators phased antenna array is developed based on integral equations method of electrodynamics. Numerical results and measurements of broadband microstrip radiators of the phased antenna arrays characteristics are presented. The obtained results can be used at designing the flat phased antenna arrays containing longitudinal printed radiators. Antennas

Modified: 03/27/2008
Tags: modeling , microstrip , antenna array , broadband , oscillator
Path: Home / Publications / Archives / 2008 / Numeric modeling …



Some problems of synthesis of matching circuits of broadband radiators of phased antenna arrays



Partly systematizes the process of constructing of reactive chains of matching of broadband phased array radiators in the sector of angles and frequency band using Fano-Ula limitations. The given formulae can also be used when designing matching and correcting devices for wide application antennas.

Modified: 11/30/2006
Tags: synthesis , matching , broadband , radiator , antenna array
Path: Home / Publications / Archives / 2006 / Some problems …


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