In-situ active impedance characterization of scanned array antennas

Loui, Hung; Christian, Thomas Edward

Title: In-situ active impedance characterization of scanned array antennas

Abstract

Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.

Inventors:: Loui, Hung; Christian, Jr., Thomas Edward

Issue Date:: 2020-07-21

Research Org.:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1735059

Patent Number(s):: 10720703

Application Number:: 16/247,932

Assignee:: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01Q - ANTENNAS, i.e. RADIO AERIALS

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01Q - ANTENNAS, i.e. RADIO AERIALS
H01Q3/34 - by electrical means
H01Q3/267 - {Phased-array testing or checking devices}
H01Q1/523 - {between antennas of an array}

G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
G01R29/10 - Radiation diagrams of antennas

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DOE Contract Number:: AC04-94AL85000

Resource Type:: Patent

Resource Relation:: Patent File Date: 01/15/2019

Country of Publication:: United States

Language:: English

Citation Formats


                    Loui, Hung, and Christian, Jr., Thomas Edward. In-situ active impedance characterization of scanned array antennas.  United States: N. p., 2020. 
        Web.

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                    Loui, Hung, & Christian, Jr., Thomas Edward. In-situ active impedance characterization of scanned array antennas.  United States.

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                    Loui, Hung, and Christian, Jr., Thomas Edward. Tue .  
        "In-situ active impedance characterization of scanned array antennas".  United States.  https://www.osti.gov/servlets/purl/1735059.

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@article{osti_1735059,

  title        = {In-situ active impedance characterization of scanned array antennas},

  author       = {Loui, Hung and Christian, Jr., Thomas Edward},

  abstractNote = {Various embodiments presented herein relate to determining mutual coupling between a pair of antennas in an array antenna. Various operations presented herein enable comparison between a magnitude and phase of a signal transmitted from a first feed network (via a first antenna) and a magnitude and phase of a portion of the signal received at a second feed network (via a second antenna). Electrical effects engendered by any of the first feed network, a first switch, a first local circuit, the second feed network, a second switch, and a second local circuit can also be determined and their effects mathematically removed. Based upon the foregoing, a mutual coupling between the pair of antenna is determined.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2020},

  month        = {7}

}

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Works referenced in this record:

Base station equipment and a method for steering an antenna beam
patent, July 2000

Keskitalo, Ilkka Antero; Muszynski, Peter; Laiho-Steffens, Jaana
US Patent Document 6,091,788
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6091788

Phased array antenna calibration system and method
patent, March 2001

Sikina, Thomas V.; Bedigian, Oscar J.
US Patent Document 6,208,287
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=6208287

Method of achieving ultra-wideband true-time-delay beam steering for active electronically scanned arrays
patent, October 2016

Loui, Hung; Brock, Billy C.
US Patent Document 9,479,232
URL: http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=9479232

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Title: In-situ active impedance characterization of scanned array antennas

Abstract

Citation Formats

Base station equipment and a method for steering an antenna beam patent, July 2000

Phased array antenna calibration system and method patent, March 2001

Method of achieving ultra-wideband true-time-delay beam steering for active electronically scanned arrays patent, October 2016

Base station equipment and a method for steering an antenna beam
patent, July 2000

Phased array antenna calibration system and method
patent, March 2001

Method of achieving ultra-wideband true-time-delay beam steering for active electronically scanned arrays
patent, October 2016