Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 342/447
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > Direction-finding receiver only > Having a spiral antennas
Description: Subject matter wherein the direction finding receiver is coupled to an antenna which has the form of a helix.










Patents under this class:

Patent Number Title Of Patent Date Issued
8305265 Radio-based direction-finding navigation system using small antenna Nov. 6, 2012
8185162 Electrically tilted antenna system with polarisation diversity May. 22, 2012
7898477 Volumetric direction-finding using a Maxwell Fish-Eye lens Mar. 1, 2011
7688263 Volumetric direction-finding system using a Luneberg Lens Mar. 30, 2010
7613482 Method and system for steering antenna beam Nov. 3, 2009
4591862 Monopulse receiver for a four arm log spiral antenna May. 27, 1986
4366483 Receiver and method for use with a four-arm spiral antenna Dec. 28, 1982
4309706 Wideband direction-finding system Jan. 5, 1982
3949407 Direct fed spiral antenna Apr. 6, 1976











 
 
  Recently Added Patents
Coffee cup stationery tab
Method for building taxonomy of topics and categorizing videos
Method and apparatus for communications
Processing data using information embedded in a data request
Spectral measurement device
Vibration power generator and vibration power generation device, and communication device and electronic equipment with vibration power generation device
Phosphonate compounds
  Randomly Featured Patents
Rimless spectacles for correction purposes
Wedge
Position flag for manually usable means
Cushioning mechanism for stair-climbing wheelchair
Device for detecting the type of ballast of a discharge lamp
Method for the devolatilization of thermoplastic materials
Variable width die and method for extruding sheet products
Firearms noise suppressor
Fractional-spurs suppression scheme in frequency tracking multi-band fractional-N phase lock loop
Golf club head