SE0501398L - Antenna efficiency measurement method and system therefore - Google Patents

Antenna efficiency measurement method and system therefore

Info

Publication number
SE0501398L
SE0501398L SE0501398A SE0501398A SE0501398L SE 0501398 L SE0501398 L SE 0501398L SE 0501398 A SE0501398 A SE 0501398A SE 0501398 A SE0501398 A SE 0501398A SE 0501398 L SE0501398 L SE 0501398L
Authority
SE
Sweden
Prior art keywords
sub
frequencies
band antenna
electrically small
complex
Prior art date
Application number
SE0501398A
Other languages
Swedish (sv)
Other versions
SE528829C2 (en
Inventor
Ermin Pasalic
Andrei Kaikkonen
Original Assignee
Amc Centurion Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amc Centurion Ab filed Critical Amc Centurion Ab
Priority to SE0501398A priority Critical patent/SE528829C2/en
Priority to PCT/SE2006/000705 priority patent/WO2006135322A1/en
Publication of SE0501398L publication Critical patent/SE0501398L/en
Publication of SE528829C2 publication Critical patent/SE528829C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G01R29/105—Radiation diagrams of antennas using anechoic chambers; Chambers or open field sites used therefor

Abstract

The present invention relates to a method for determining antenna efficiency for an electrically small multi band antenna, comprising the following steps: measuring a complex S<SUB>11,fs </SUB>parameter value of said electrically small multi band antenna, when said electrically small multi band antenna is arranged in free space, for a plurality of frequencies; measuring a complex S<SUB>11,c</SUB>(d) parameter value of said electrically small multi band antenna, when said electrically small multi band antenna is arranged in a cavity, for a plurality of volumes V(d) of said cavity, for said plurality of frequencies; determining, for each frequency of said plurality of frequencies, the outermost values of said complex S<SUB>11,c</SUB>(d) parameter values, wherein the imaginary part of the S<SUB>11,c</SUB>(d) parameter values are plotted against the real part of the S<SUB>11,c</SUB>(d) parameter values for said plurality of volumes V(d) of said cavity; fitting, for each frequency of said plurality of frequencies, said outermost values to a circle; and determining, for each frequency of said plurality of frequencies, said antenna efficiency based on said circle and said complex S<SUB>11,fs </SUB>parameter value.
SE0501398A 2005-06-17 2005-06-17 Antenna efficiency measurement method and system therefore SE528829C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0501398A SE528829C2 (en) 2005-06-17 2005-06-17 Antenna efficiency measurement method and system therefore
PCT/SE2006/000705 WO2006135322A1 (en) 2005-06-17 2006-06-14 Antenna efficiency measurement method and system therefore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0501398A SE528829C2 (en) 2005-06-17 2005-06-17 Antenna efficiency measurement method and system therefore

Publications (2)

Publication Number Publication Date
SE0501398L true SE0501398L (en) 2006-12-18
SE528829C2 SE528829C2 (en) 2007-02-27

Family

ID=37532583

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0501398A SE528829C2 (en) 2005-06-17 2005-06-17 Antenna efficiency measurement method and system therefore

Country Status (2)

Country Link
SE (1) SE528829C2 (en)
WO (1) WO2006135322A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102176219B (en) * 2010-12-29 2014-01-22 电子科技大学 Method for calculating transmission loss or coupling loss of leaky coaxial cable
CN105911369A (en) * 2016-06-07 2016-08-31 乐视控股（北京）有限公司 Rapid confirmation method of antenna efficiency anechoic chamber testing

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0217515Y2 (en) * 1987-06-03 1990-05-16
NL1010745C2 (en) * 1998-12-07 2000-06-08 Hollandse Signaalapparaten Bv Test room.
SE524833C2 (en) * 1999-10-28 2004-10-12 Integra Antennas Ltd Measuring device and method for measuring transmission and reception characteristics of a communication equipment
SE0002980D0 (en) * 2000-03-31 2000-08-23 Kildal Antenn Consulting Ab A method and apparatus for measuring the performance of antennas
WO2005003795A1 (en) * 2003-06-30 2005-01-13 Telefonaktiebolaget L M Ericsson Testing radiation efficiency of an antenna

Also Published As

Publication number Publication date
WO2006135322A1 (en) 2006-12-21
SE528829C2 (en) 2007-02-27

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