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
Cationic polymers for antimicrobial applications and delivery of bioactive materials
Managing job execution
Fragrance compounds
Bipolar transistor with diffused layer between deep trench sidewall and collector diffused layer
System and method for generating profile morphing using cephalometric tracing data
Removable case
Dynamic load profiling in a power network
  Randomly Featured Patents
Airflow sensor
Joining structure
Pepper hybrid BS02827989
Apparatus for the weighted dosing of granulated or pulverulent products
Foot warming pillow
Methods and compositions for the control of the flesh fly
Threaded connector
Method for determining the ignitability of a fuel
Self-aligning block
Removable vena cava filter comprising struts having axial bends