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
Human renal disease marker substance
Sense-amplifier monotizer
Guitar strap attachment means
Clothes hanger
Under bump passive components in wafer level packaging
Node and wireless sensor network comprising the node
Compound semiconductor device and manufacturing method therefor
  Randomly Featured Patents
Efficient method of providing symbol data from demodulator to a processor
Publishing a network address in a computer network
Motor
Multiple terminal passive multiplexing apparatus
High pressure, high temperature (HPHT) fluid loss control aid for drilling fluids
Zinc and manganese pigments
Semiconductor device and method of fabricating the same
Two-part adjustable connector assembly
Light management films with zirconia particles
Method and apparatus for high rate packet data transmission