Broad band antennas and feed methods

Patent · Tue Apr 18 00:00:00 EDT 2017

OSTI ID:1351814

Benzel, David M.; Twogood, Richard E.

Two or more Vivaldi antennas, consisting of two plates each, each with the antenna's natural impedance of approximately 100 ohms, are placed in parallel to achieve a 50 ohm impedance in the case of two antennas or other impedances (100/n ohms) for more than two antennas. A single Vivaldi antenna plate (half Vivaldi antenna) over a ground plane can also be used to achieve a 50 ohm impedance, or two or more single plates over a ground plane to achieve other impedances. Unbalanced 50 ohm transmission lines, e.g. coaxial cables, can be used to directly feed, the dual Vivaldi (four plate) antenna in a center fed angled center departure, or more desirably, a center fed offset departure configuration.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-07NA27344
• Assignee: Lawrence Livermore National Security, LLC
• Patent Number(s): 9,627,777
• Application Number: 13/572,234
• OSTI ID: 1351814
• Resource Relation: Patent File Date: 2012 Aug 10
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
24 POWER TRANSMISSION AND DISTRIBUTION