.MCAD 306000000 Z  docDocument<mcObjectI (d2_graph_format graphData axisFormatLLtrace2D      dim_formatCmasslengthtimecharge temperature luminosity substanceNumericalFormat@djj shpRectE/mcDocumentObjectStateJ mcPageModel:{?{???mcHeaderFooter99 |P ComputeEngine=BuiltInsBQ SerialAnyvalH@R@H @S@HT@HMbP?U@H units_classA TextState0 TextStyle/@ ArialNormal/@ArialHeading 1/@ ArialHeading 2 /@ ArialHeading 3 /@ ArialParagraph /@ ArialList /@ ArialIndent /@Times New RomanTitle/@Times New RomanSubtitle font_style_list> font_style?  VariablesTimes New Roman?  ConstantsTimes New Roman? TextArial? Greek VariablesSymbol? User 1Arial? User 2 Courier New? User 3System? User 4Script? User 5Roman? User 6Modern? User 7Times New Roman? SymbolsSymbol? Current Selection FontArial? Undefined Font? HeaderArial? FooterArial? Rotated Math FontTimes New RomanG TextRegion docRegion7shpBoxD^$ T+VV CharacterMapRangeMap,'Single turn small square receiving loop ChrPropMap(' ParPropMap*' RangeElem-' ParPropData+ RangeData.EmbedMap"-LinkMap '-'LinkData!@ Heading 1Arial@D'# wooV1.04 OD 21/06/05(*-+"- -!@NormalArial @DCQSPCopyright: Owen Duffy 2005(*-+"- - !@NormalArial !@DIr[X?Tjj Assumptions:( * "- #+"$-  %- &!@ Heading 2Arial '@Dkx@+``@1. uniform current distribution; 2. loop side < 0.03l; 3. free space conditions; 4. circular homogenous conductor; 5. non magnetic conductor; 6. single turn.(O.(-.) ChrPropData)'*-+)'@ Arial(,--)'*.-/)'@ Symbol,0-1)'@ Arial.2-3)'@ Arial04-5)'@ Arial26-7)'@ Arial48-9)'@ Arial6:-;)'@ Arial8<-=)'@ Arial:>-?)'@ Arial<@@-@A)'@ Arial>@B-@C)'@ Arial@@@D-@E)'@ Arial@B@F-@G)'@ Arial@D@H-@I)'@ Arial@F@J-@K)'@ Arial@H@L-@M)'@ Arial@J@N-@O)'@ Arial@L@P-@Q)'@ Arial@N@R-@S)'@ Arial@P@T-@U)'@ Arial@R@V-@W)'@ Arial@T@X-@Y)'@ Arial@V@Z-N@[)'@ Arial@X@Z**@\-@]+"@^- @_-@`!@ListArial @a@D\+TT Constants:( * @b- @c+"@d-  @e- @f!@ Heading 2Arial @g@D wTooPhysical constants(@h-@i)@ggArial@j-@k)@ggArial@h*@l-@m+"@n- @o-@p!@NormalArial @qeqRegion3@DX9 0@rtree1 p@s1 @r@t1d@s\m.0@u1@s@v15@@u@w1t@v4@x1@v\p@y1@u@z1t@y10@{1K@y@|1@{7@}3@DU90@~1 p@1@~@1d@\m.0@1@@1+@@Serial_DisplayNodeF@1@@3@D>YP@1 p@1 @@1d@\e.0@1@@1t@ 8.854187817@1@@1t@10@1K@@1@12@3@D<ZYP@1 p@1@@1d@\e.0@1@@1+@@@F@1@@3@DbAtp@1 p@1 @@1d@\h@1@@1t@120@1@\p@3@Db]tpZ@1 p@1@@1d@\h@1@@1+@@@F@1@:J@3@D~P@1 p@1 @@1d@c@1@@1t@2.998@1@@1t@10@1@8@@Dm+eeLoop parameters:(@-@)@gArial*@-@+"@- @-@!@NormalArial @3@D/\@1 p@1 @@1d@a@1@0.6@@D``]44 loop side( * @- @+"@-  @- @!@NormalArial @3@D!^@1 p@1 @@1d@E@1@@1t@1@1@@1t@10@1K@@1@6@@D@@_yyincident E field (V/m)(*@-@+"@- @-@!@NormalArial @3@DB`@1 p@1 @@1d@b@1@0.0007@@D``a>> wire radius( * @- @+"@-  @- @!@NormalArial @3@D+b@1 p@1 @@1d@Z.l@1@@1t@50@1@0j@@D@@c loop load impedance (rx input z)( * @- @+"@-  @- @!@NormalArial @3@DBd@1 p@1 @@1d@f@1@@1t@7.1@1@@1t@10@1@6@@D``e<< frequency ( * @- @+"@-  @- @!@NormalArial @3@D&f@1 p@1 @@1d@\s@1@@1t@5.7@1@@1t@10@1@7@@D@@gconductivity of loop material(*A-A+"A- A-A!@NormalArial A3@D/A1 pA1 AA1dAAA 1AA 1dA aA 1A 2A 3@D #A 1 pA1A A1dAAA1AA1+@A@FA1AA@D@ @CC area of loop( * A- A+"A-  A- A!@NormalArial A@D17C@h+//Calcs:(*A-A+"A- A-A!@ Heading 2Arial A@DK[X+Calculate open circuit voltage:(A -A!)AgArial*A"-A#+"A$- A%-A&!@NormalArial A'3@Dc-xA(1 pA)1 A(A*1dA)HA+1A)A,1dA+EA-1A+\hA.3@DdM|xA/1 pA01A/A11dA0HA21A0A31+@A2@FA41A2A5@Dpk{pxmagnetic field strength(*A6-A7+"A8- A9-A:!@NormalArial A;3@D@A<1 pA=1 A1dA=BA?1A=A@1dA?\m.0AA1A?HAB3@DRAC1 pAD1ACAE1dADBAF1ADAG1+@AF@FAH1AFAI@Dpp{{magnetic flux density(*AJ-AK+"AL- AM-AN!@NormalArial AO3@D9AP1 pAQ1 APAR1dAQ\yAS1AQAT1dASBAU1AS AAV3@DGAW1 pAX1AWAY1dAX\yAZ1AXA[1+@AZ@FA\1AZ3JA]@DppMM magnetic flux( * A^- A_+"A`-  Aa- Ab!@NormalArial Ac3@D7Ad1 pAe1 AdAf1@AeAg1dAfV.ocAh1pAfAi1AhfAj1AeAk1p@AjAl1AkAm1@AlAn15@AmAo1dAn2Ap1An\pAq1AmfAr1Al\yAs1Aj1jAt3@DoAu1 pAv1AuAw1@AvAx1dAwV.ocAy1pAwAz1AyfA{1AvA|1+@A{@FA}1A{A~@Dpp>> o/c voltage( * A- A+"A-  A- A!@NormalArial A@D# +.Calculate antenna equivalent source impedance:(.A-.A)AgArial*.A-.A+"A- .A-.A!@NormalArial A3@D3YHA1 pA1 AA1dAL.aA1AA1@AA1@AA1tA2A1A\m.0A1AA1dAaA1A\pA1pAA1AA1@AA1dAlnA1pAA1AA1dAaA1AbA1A0.774A3@D4NQHA1 pA1AA1dAL.aA1AA1+@A@FA1AA@Dx;1[xH 'inductance of square loop (from Grover)('*'A-'A+"A- 'A-'A!@NormalArial A3@Dft-A1 pA1 AA1@AA1dAR.lA1pAA1AfA1AA1@AA1@AA1dA4A1AaA1AA1dA2A1AbA1{AA1AA1@AA1dAfA1A\m.0A1AA1dA\pA1A\sA3@D{= A1 pA1AA1@AA1dAR.lA1pAA1AfA1AA1+@A@FA1AA@Dx{xXXloss resistance(*A-A+"A- A-A!@NormalArial A3@D.A1 pA1 AA1@AA1dAR.rA1pAA1AfA1AA1@AA1@AA1dA\hA1AA1tA8A1A3A1AA1dA\pA1A3A1AA1p@AA1AA1dAAA1AA1p@AA1AA1dAcA1AfA1A2A1A2A3@Dc A1 pA1AA1@AA1dAR.rA1pAA1AfA1AA1+@A@FA1AA@Dxxqqradiation resistance(*A-A+"A- A-B!@NormalArial B3@D0B1 pB1 BB1@BB1dBR.aB1pBB1BfB1BB 1@BB 1dB R.lB 1pB B 1B fB 1BB1dB R.rB1pB B1BfB3@D@B1 pB1BB1@BB1dBR.aB1pBB1BfB1BB1+@B@FB1BB@DxxYYtotal resistance(*B-B+"B- B-B !@NormalArial B!3@D*A08B"1 pB#1 B"B$1@B#B%1dB$Z.aB&1pB$B'1B&fB(1B#B)1@B(B*1dB)R.aB+1pB)B,1B+fB-1B(B.1@B-B/1@B.B01@B/B11tB02B21B0\pB31B/fB41B.L.aB51B-1jB63@D+}A8B71 pB81B7B91@B8B:1dB9Z.aB;1pB9B<1B;fB=1B8B>1+@B=@FB?1B=B@@D+/;8equivalent source impedance(*BA-BB+"BC- BD-BE!@NormalArial BF@Dcsp ++Calculate load (receiver terminal) voltage:(+BG-+BH)BFgArial*+BI-+BJ+"BK- +BL-+BM!@NormalArial BN3@D~-WBO1 pBP1 BOBQ1@BPBR1dBQV.lBS1pBQBT1BSfBU1BPBV1@BUBW1dBVZ.lBX1pBVBY1BXBZ1dBYZ.lB[1BYB\1dB[Z.aB]1pB[B^1B]fB_1BUB`1dB_V.ocBa1pB_Bb1BafBc3@D XBd1 pBe1BdBf1@BeBg1dBfV.lBh1pBfBi1BhfBj1BeBk1+@Bj@FBl1BjBm@D+Calculate Antenna Factor:(Bn-Bo)BmgArial*Bp-Bq+"Br- Bs-Bt!@NormalArial Bu@D/TT''@e(Antenna Factor is the ratio of the incident electric field strength to the terminal voltage in dB/m)(e*eBv-eBw+"Bx- eBy-eBz!@NormalArial B{3@D-KUB|1 pB}1 B|B~1@B}B1dB~AntFactB1pB~B1BfB15B}B1tB20B1BB1dBlogB1pBB1BB1{@BB1BEB1{BB1BB1dBV.lB1pBB1BfB3@D i2B1 pB1BB1@BB1dBAntFactB1pBB1BfB1BB1+@B@FB1B3JB@DO*d`"""Plot(*B-B+"B- B-B!@ Heading 1ArialB@D{ @DRange for plot, two decades up to the frequency where side is 0.03l.(C!DB-!B)BB-B)B@ ArialBB-B)B@ ArialBB-B)B@ ArialBB-B)B@ ArialBB-B)BBB-B)B@ SymbolBB-B)B@ ArialBBB*DB-DB+"B- DB-DB!@NormalArial B3@D{B1 pB1 BB1dBfB1BB1 @BB1@BB1dBcB1BB1@BB1tB100B1B33B1BaB1BB1@BB1dBcB1BB1@BB1tB100B1B33B1BaB1B1.01B1BB1dBcB1BB1tB33B1BaB3@D6JB1 pB1BB1@BB1@BB1@BB1fB 58.872056B1B 33.741791B1BB1@BB1BB1BB1dBAntFactB1pBB1BfB1BB1@BB1@BB1BBB1dB 1.514141B1BB1dB10B1B7B1BB1dB 1.514141B1BB1dB10B1B5B1BB1@BB1BB1BfB7) OFrequency (Hz)NAntenna Factor (dB/m)Antenna Factor vs Frequency