Resources Contact Us Home
Browse by Category: Main > Communications
Class Information
Number: 342/406
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Directive > Beacon or receiver > With transmisson of bearing or position determinative signals > Tacan > Vor > Doppler > With circular array of antennas
Description: Subject matter wherein the antennas are arrayed in a ring shaped pattern.

Patents under this class:

Patent Number Title Of Patent Date Issued
8704712 System and method of generating a radio frequency signal Apr. 22, 2014
8031118 Phase correction apparatus, DVOR apparatus, and phase correction method Oct. 4, 2011
7428450 Method and system for using a database and GPS position data to generate bearing data Sep. 23, 2008
6329945 System for improved GPS accuracy using a sky map Dec. 11, 2001
6094166 Conical omni-directional coverage multibeam antenna with parasitic elements Jul. 25, 2000
4954835 Radiodirection finding method and apparatus using doppler effect frequency modulation Sep. 4, 1990
4434423 Doppler VOR Feb. 28, 1984
4382259 Device for supplying a radionavigation system of the Doppler VOR type and a Doppler VOR system comprising said device May. 3, 1983
4005427 Facility for monitoring the carrier-frequency and sideband signals radiated by a DVOR ground station Jan. 25, 1977
3999187 Doppler VOR beacons Dec. 21, 1976
3972044 Antenna system for Doppler VOR ground stations Jul. 27, 1976

  Recently Added Patents
Portion of display panel or screen with an icon
Tandem electric machine arrangement
Efficient paging in a wireless communication system
Method and apparatus for prioritizing data transfer
Memory management configuration
Double diffused metal oxide semiconductor device and manufacturing method thereof
Accordion bioreactor
  Randomly Featured Patents
Hardware assisted non-volatile memory-to-input/output direct memory access (DMA) transfer
Electronic musical instrument utilizing data processing system
Medical device including light energy emitting contact tip with means for raising temperature of the tip
Display screen with a group of icons
Apparatus and method to provide a functional and more user-friendly interface for downloaded ISDN telephony features
Photographic printing paper and method of making same
Aminopropyltrimethoxy silane primer composition and coated articles made therewith
Configurable input/output interface for an application specific product
Method and system for designing a cellular communication system
Acid-curable cellulose esters containing melamine pendent groups