Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Direct fed spiral antenna










Image Number 3 for United States Patent #3949407.

A direct fed spiral antenna element array is disclosed for radiating electromagnetic energy. Each antenna element is a multi-arm spiral element having inner and outer ends. Phase shifting is obtained with internal phase control wherein switching means serve to interconnect selected ones of the inner arm ends. Each such antenna element is directly fed by a feed network which feeds currents directly to the outer ends of the spiral arms.








 
 
  Recently Added Patents
Electronic hand-held device
Cooling method and device for cooling a medium-voltage electrical installation in a protective sheath
Surfcraft fin
Display panel and gate driving circuit and driving method for gate driving circuit
Integrated circuit with electromagnetic intrachip communication and methods for use therewith
Organic light emitting display apparatus
Defected ground plane inductor
  Randomly Featured Patents
Optical waveguide coupler for whispering-gallery-mode resonators
Steam washing method for washing machine and washing machine with the same
Waist change purse with ornamental chain
Slide valve
Vibratory parts-feeding unit
Hybrid air-conditioning system and method for controlling the same
Method for managing usage authorizations in a data processing network and a data processing network
Light valve device using semiconductive composite substrate
Miktopolymer compositions
Rubber composition for tire treads