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
Polypeptides and immunizing compositions containing gram positive polypeptides and methods of use
Electric train drive control device
Peered proctoring
Subscribing to content
Moulded tie strips
Polymer-encapsulated colorant nanoparticles
Method of making a CIG target by cold spraying
  Randomly Featured Patents
Heat exchanger and drain down for solar collector
Flexible pouch
Wire containment cap
Coherent blue/green optical source and other structures utilizing non-linear optical waveguide with quasi-phase-matching grating
Hair styling comb
Process for preparing thixotropic liquid detergent compositions
Method for producing thermosetting resin having benzoxazine ring
Wire bonding method
System for encapsulating Ethernet frames over very high speed digital subscriber lines
Apparatus for fabricating a fluid bearing