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
Inductive antenna coupling
Thermochromic microparticles, dispersions thereof, and manufacturing method thereof, as well as light-modulating coatings, light-modulating films and light-modulating inks
Base station device and wireless communication method
Plasmon generator includes three metal layers for thermally-assisted magnetic recording
Communication system, authentication device, control server, communication method, and program
Efficient file system metadata scanning using scoped snapshots
Timing and cell specific system information handling for handover in evolved UTRA
  Randomly Featured Patents
Disposable holder for surgical knife blade
Vibration device
End modified thermal responsive hydrogels
Visual navigation system and method based on structured light
System and method for analyzing exploratory behavior
Folding seat assembly having automatic seat cushion tip-up
Image pick-up assembly for a vehicle training simulator
Intermodal railway car
Wireless, frequency-agile spread spectrum ground link-based aircraft data communication system with wireless unit in communication therewith
Method for manufacture of process cheese