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Title: Broad band antennas and feed methods

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1351814
Patent Number(s):
9627777
Application Number:
13/572,234
Assignee:
Lawrence Livermore National Security, LLC
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01Q - ANTENNAS, i.e. RADIO AERIALS
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Aug 10
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 24 POWER TRANSMISSION AND DISTRIBUTION

Citation Formats

Benzel, David M., and Twogood, Richard E. Broad band antennas and feed methods. United States: N. p., 2017. Web.
Benzel, David M., & Twogood, Richard E. Broad band antennas and feed methods. United States.
Benzel, David M., and Twogood, Richard E. Tue . "Broad band antennas and feed methods". United States. https://www.osti.gov/servlets/purl/1351814.
@article{osti_1351814,
title = {Broad band antennas and feed methods},
author = {Benzel, David M. and Twogood, Richard E.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {4}
}

Works referenced in this record:

Antenna with a reflector of open construction
patent, May 1985


Broadband notch antenna
patent, June 1989


Discontinuous mobile antenna
patent, July 1990


Wideband antenna with tapered surfaces
patent, August 2004


Ultra-wideband antennas
patent, June 2005


Vivaldi antenna
patent, August 2006