Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Leaky wave antenna with radiating structure including fractal loops










Image Number 10 for United States Patent #7250916.

An antenna is provided for acquiring RF signals from various satellite ranging systems including GPS, GLONASS, GALILEO and OmniSTAR.RTM.. The antenna configuration includes a radiating structure of multi-arm spiral slots terminated with fractal loops. A leaky wave microstrip spiral feed network is used to excite the radiating structure of the antenna. The fixed beam phased array of aperture coupled slots is optimized to receive a right hand polarized signal. The proposed antenna is made out of a single PCB board. The antenna has a very uniform phase and amplitude pattern in the azimuth plane from 1.15 to 1.65 GHz, therefore providing consistent performance at GPS, GLONASS, GALILEO and OmniSTAR.RTM. frequencies. The antenna also has a common phase center at the various frequencies from 1175 MHz to 1610 MHz and substantially the same radiation pattern and axial ratio characteristics.








 
 
  Recently Added Patents
Methods for forming patterned structures
High performance adaptive switched LED driver
Fabric care compositions comprising front-end stability agents
For a given cell in a spreadsheet, evaluating an unlimited number of conditional formatting rules and applying multiple corresponding formats to the cell
High density molecular memory storage with read and write capabilities
Security patch update processor
Universal tablet and smartphone holder
  Randomly Featured Patents
Aqueous-aqueous emulsions comprising a dispersed phase and a continuous surfactant phase with rod-like surfactants
Independent control of one of normally interdependent light transmission characteristics of optical fiber
Rosin emulsion sizing agent for paper making and method for paper sizing using the same
Connector housing assembly for discrete wires
Apparatus for the continuous winding-up or winding-off of substantially flat structures into a package and from a package, respectively
Process for producing catalyst supports or catalyst systems having open pores
Adapter mount for microphones and the like
Optical fiber cable
Washable acrylic paint
Coplanar mounting member for a MEM sensor