1、?94?PCB?EMC?(?)?2000/09/01?EMC?EMC?1.002000/09/01?EMCPCB0001PCB?EMC?2000-09-01?2?94?303.4.6?.293.4.5?.283.4.4?.273.4.3 ESL?.27?.253.4.2?.253.4.1?.253.4?PCB?EMC?.253.3.2?.243.3.1?.243.3?.233.2.5?.233.2.4?.233.2.3?.223.2.2?.223.2.1?.223.2?.213.1?.21?.192.2.5?.182.2.4?.182.2.3?.182.2.2?.172.2.1?.172.2?
2、.162.1.4?.162.1.3?.162.1.2?.162.1.1?.162.1?.16?.111.3.3?.111.3.2 Vcc?GND?.111.3.1 Vcc?GND?EMC?.111.3?.101.2?.101.1.2?.101.1.1 Vcc?GND?.101.1?.101?.10?.8?.?EMCPCB0001PCB?EMC?2000-09-01?3?94?605.1.2?.595.1?.595?.584?.563.5?.553.4.2?.543.4.1?.543.4?.533.3.3?25 mil?.523.3.2?13 mil?.513.3.1?5mil?.513.3?.
3、503.2?.483.1.3?.473.1.2?.473.1.1?.473.1?.473?.452.2?.432.1.3?.432.1.2?Stripline?.422.1.1?Microstrip?.422.1?.422?.401.3?.381.4?.371.3.3?.371.3.2?Stripline?.361.3.1?microstrip?.361.3?.361.2?.361.1?.361?.36?.344.4.3?.344.4.2?.344.4.1?.344.4?.344.3.4?.334.3.2?.324.3.1?.324.3?.324.2?.324.1?.324?.?EMCPCB0
4、001PCB?EMC?2000-09-01?4?94?782.1?.772?.771.2?.771.1?.771?.77?PCB?EMC?.76?.76?.75?.75?.75?.74?.74?.74?.742?EMC?.741.2.2?.721.2.1?.721.2?.721.1?.721?.72?EMC?.717.5 EMC?.707.4 EMC?.707.3 EMC?.707.2?.697.1 EMC?.697?EMC.676.3.6?.666.3.5?.666.3.4?.666.3.3?.666.3.2?PCB?.666.3.1?.66?.65?.64?.63?.63?.63?.63?
5、.63?.636?.61?.605.2.1?.605.2?.?EMCPCB0001PCB?EMC?2000-09-01?5?94?931.5?.931.4.5?.931.4.4?.931.4.3?.931.4.2?.931.4.1 PCB?.931.4?.921.3?.911.2.4?.901.2.3 PCB?.901.2.2?.901.2.1?.901.2?.901.1?.901?PCB?.90?.896?.885.8?.885.7?.865.6?.865.5?.855.4?.855.3?.855.2?.845.1?.845?.844.5?.844.4?.834.4?.834.3?.834.
6、2?.834.1?.834?.823.2?.813.1?.813?.802.5?.792.4?.782.3?.782.2?.?EMCPCB0001PCB?EMC?2000-09-01?6?94?PCB?EMC?EMC?EMI?PCB?EMC?PCB?EMC?PCB?EMC?PCB?EMC?EMC-Electromagnetic CompatibilityEMI?Electromagnetic Interference?High-Speed Digital Design?:?Emi Book?EMC?Training for EMC design)?IEC 60950?Safty of Info
7、mation Technology Equiment?GB4943-2000?PCB?EMC?PCB?EMCPCB0001PCB?EMC?2000-09-01?7?94?PCB?EMC?EMC?(EMC-Electromagnetic Compatibility)?GJB72-85?5.10?(?)?(?)?EMC?EMC?CAD?SI?EMC?EMC?EMI?PCB?CAD?EMC?EMC?QCC?CAD?PCB?EMC?CAD?PCB?EMC?PCB?EMC?CAD?EMC?SI?EMC?PCB?EMC?EMC?1?4?2?4?7?3?5?EMCPCB0001PCB?EMC?2000-09
8、-01?8?94?3?6?3?1?2?PCB?EMC?PCB?PCB?EMC?EMC?CAD?EMC?CAD?EMC?NOTES?09351?PCB?EMC?2000-09-01?EMCPCB0001PCB?EMC?2000-09-01?9?94?1?PCB?EMC?EMC?1.1?EMC?CISPR16 CLASS B?PCB?EMC?1.1.1 Vcc?GND?PCB?8260?IC?2?2?2?48V?BGND?1.1.2?CAD?EDA?CAD?EMC?1.2?EMCPCB0001PCB?EMC?2000-09-01?10?94?VCD?6?PCB?GSM?GSR?PCB?PCB?2.
9、0mm?4?2000?7?10.599.1216?7.656.47142.212.155.594.56121.621.623.973.35101.531.292.472.0381.030.821.761.4160.620.591.261?40.340.320.590.472?3.0mm?2.0mm?3.0mm?2.0mm?1.3?1.3.1 Vcc?GND?EMC?PCB?PCB?1.3.2 Vcc?GND?1.3.3?EMCPCB0001PCB?EMC?2000-09-01?11?94?EMC?a.?b.?c.?d.?e.?50MHZ?50MHZ?a.?b.?c.?d.?PCB?*?1?3?
10、SGPS2113PSSG2112SPGS21114321?1TOPGNDPOWERBOTTOM?CAD?PCB?TOP?EMCPCB0001PCB?EMC?2000-09-01?12?94?GND?POWER?TOP?BOTTOM?2?GNDPOWERS1S2?2?2?2?XX?XX?XXX?A?GND?PGND?B?C?1?2?3?PCB?GND?PGND?2?GND?S1?S2?PGND?S1?XX?2?EMCPCB0001PCB?EMC?2000-09-01?13?94?3?TOPGNDPOWERBOTTOM?1?BOTTOM?*?3?1?2?4S3PG2S2G1S13214S3G2PS
11、2G1S13213S4S3PGS2S14112S4PS3S2GS14111654321?3?S2?S3?S1?4?5?S2-P?P-G2?G1-S2?S2?1?S1?S2?S3?S4?1?2?S1?S2?S3?S4?S2?4?3?S2?*?2?3?1S4P2G2S3S2P1G1S14225S4G3S3P2P1S2G1S14224S4P2S3G2P1S2G1S14223S4G3S3PG2S2G1S14312S5G2S4PS3S2G1S1521187654321?2?1?3?3?S4?4?3-4?5-6?2-3?6-7?EMCPCB0001PCB?EMC?2000-09-01?14?94?5?4?
12、S2?S3?S4?P2?S2?S3?*?2?3?1?4S4G4S3G3P2P1G3S2G1S14424S5G3S4P2G2S3P1S2G1S15323S5G4S4PG3S3G2S2G1S15412S6G3S5S4PG2S3S2G1S1631110987654321?3?3-4?7-8?5-6?6?7?S2?S3?S4?S1?S5?S2?S3?4?EMC?3?EMC?S2?S3,?2?1?1?*?2?3?1?4?5S7G3S6P2S5S4G2P1S3S2G1S17325S5G5S4G4P2P1G3S3G2S2G1S15524S6G4S5P2S4G3P1S3G2S2G1S16423S6G5S5G4
13、S4PG3S3G2S2G1S16512S7G4S6S5G3S4PS3G2S2G1S17411121110987654321?2?4?EMC?1?3?14?EMCPCB0001PCB?EMC?2000-09-01?15?94?2?PCB?EMC?,?PCB?PCB?2.1?2.1.1?A/D?D/A?I/O?PCB?2.1.2?2.1.3?PCB?A/D?D/A?2.1.4?I/O?I/O?I/O?A/D?D/A?EMCPCB0001PCB?EMC?2000-09-01?16?94?1.?2.?3.?I/O?I/O?HEAD?4.?5.?,?6.?IC?7.?A/D?2.2?2.2.1?DC/D
14、C?EMI?300MHz?12?EMCPCB0001PCB?EMC?2000-09-01?17?94?EMI?12?2.2.2?PCB?2.2.3?EMI?PCB?2.2.4?16244?EMI?EMCPCB0001PCB?EMC?2000-09-01?18?94?2.2.5?PCB?IC?EMCPCB0001PCB?EMC?2000-09-01?19?94?LV?-?LV?DC/DCDC/DCDC/DC?LVLVLV ICCCCCC-?LV?LV?EMCPCB0001PCB?EMC?2000-09-01?20?94?3?3.1?PCB?3-1?3-1?3-1?IC1?0?1?VCC?C?dI
15、)?L?L?V?V=LDIDt?3-2IC1?V?3-3?EMCPCB0001PCB?EMC?2000-09-01?21?94?3-3?3-3?IC1?0?1?VCC?dI?C2?L?3.2?3.2.1?RC?3-4?ESL?3-4?3-4?3.2.2?EMCPCB0001PCB?EMC?2000-09-01?22?94?4?ESR?fc?fc?fc?3.2.3?3.2.4?1001500?3-5?3-5?muRata?3.2.5?EMCPCB0001PCB?EMC?2000-09-01?23?94?3-6?3-6?muRata?3.3?3.3.1?EMC?ZsZL?a?(b)(c)(d)(e
16、)(f)?3-7?3-7?a?3-7?b?EMCPCB0001PCB?EMC?2000-09-01?24?94?3-7?c?d?3-7?e?3-7?f?T?EMI?3-8?3-8?EMI?3.3.2?1?2?3?4?3.4?PCB?EMC?3.4.1?PCB?EMC?Decouple?Bypass?Bulk?3.4.2?3-9?3-9?EMCPCB0001PCB?EMC?2000-09-01?25?94?Muti-Layer Capacitor?PCB?5nH?30m?3-10?3-10?ESL?ESR?3-11?3-12?-?3-11?EMCPCB0001PCB?EMC?2000-09-01
17、?26?94?3-12?3-12?15MHz?175MHz?150MHz?3.4.2 ESR?3-12?ESR?ESR?PCB?1?ESR?2?n?ESR/n?3?4?ESR?ESR?3.4.3 ESL?ESL?ESL?3-1?3-1?ESL?EMCPCB0001PCB?EMC?2000-09-01?27?94?ESL?ESL?3.4.4?RF?EMI?X7R?Y5V?Z5U?3-13?EMCPCB0001PCB?EMC?2000-09-01?28?94?0805?0.01UF?0.1UF?50MHZ?MUSA?0.01UF?0.1UF?3.4.5?1?2?3-12?22nF?11 MHz?1
18、?6M40MHz?3?IC?4?IC?PCB?3-14?3-14?Vcc?Vcc?IC?3-14?5?3-14?6?2?1?3-15?1.5?1.5?3.25MHz?100MHz?IC?2?1?EMCPCB0001PCB?EMC?2000-09-01?29?94?3-15?3.4.6?A?1uf?10uf?22uf?33uf?B?1?4?1uf?10uf?22uf?33uf?Tantalum?10uf?22uf?33uf?2?EMCPCB0001PCB?EMC?2000-09-01?30?94?14?EMCPCB0001PCB?EMC?2000-09-01?31?94?4?EMC?EMI?4.
19、1?A?B?C?PON16?ESD?DMU?PGND?(?)?(?)?PGND?ESD?4.2?A?B?C?4.3?4.3.1?EMCPCB0001PCB?EMC?2000-09-01?32?94?1MHZ?1/4?1/20?4.3.2?10MHZ?EMI?B?C?D?E?F?A?Ig?Zg?Vi?B?E?Vi?Vi?I1?I2?I1?I2?V0?EMI?Vi?Vi=?E?dl=?t=?t?B?ds?EMCPCB0001PCB?EMC?2000-09-01?33?94?egII1I2V0zgIgviABCDEF?E?dl?B?I1?I2?4.3.3?4.3.4?4.4?L?1MHZ?10MHZ
20、?L?/20?1?10MHZ?3?4.4.1?4.4.2?10MHZ?BGND?BGND?GND?PGND?AGND?DGND?10G?4.4.3?PCB?0.1u(?0.01u)?EMCPCB0001PCB?EMC?2000-09-01?34?94?EMI?Pulse?A?B?100MIL?INTEL?IC?PCB?CAD?EMCPCB0001PCB?EMC?2000-09-01?35?94?1?1.1?PCB?20?6?PCB?:?EMC?EMC?EMI?1.2?CAD?1.3?1.3.1?microstrip?wrh t?FR-4?r=4.5?EMCPCB0001PCB?EMC?2000
21、-09-01?36?36?TPD=142.2(ps/inch)1.3.2?Stripline?PCB?t wh?)(017.1ftnsrPDt=)()8.0(67.04ln600+=wtwhZr)(100000ftpFZCPDt=)(0020ftpHCLZ=?)(85inchpsr?FR-4?,?r=4.5?TPD=180.3(ps/inch)1.3.3?EMCPCB0001PCB?EMC?2000-09-01?37?37?K?15mils?K=65?20mils?K=60?1.4?(?)?pinovershoot?0?1undershoot?Vcc?0.7V?RLRSZ0?EMCPCB000
22、1PCB?EMC?2000-09-01?38?38?ZRZRZRZRLLLSSS0000+=+=?EMCPCB0001PCB?EMC?2000-09-01?39?39?EMI?1.3?PCB?CSV?CSV?PCB?EMI?PCB?L?W?T?H?CSV?Cti?L?EMCPCB0001PCB?EMC?2000-09-01?40?40?EMCPCB0001PCB?EMC?2000-09-01?41?41?2?,?2.1?2.1.1?Microstrip?wrh t?FR-4?r=4.5?Tpd=142.2(ps/inch)?EMCPCB0001PCB?EMC?2000-09-01?42?42?
23、2.1.2?Stripline?PCB?t wh?)(017.1ftnsrPDt=)()8.0(67.04ln600+=wtwhZr)(100000ftpFZCPDt=)(0020ftpHCLZ=?)(85inchpsr?FR-4?,?r=4.5?Tpd=180.3(ps/inch)2.1.3?EMCPCB0001PCB?EMC?2000-09-01?43?43?1?38.1(ps/inch)?2?3?4?20DB?EMI?EMC?EMCPCB0001PCB?EMC?2000-09-01?44?44?18dB?EMC?1?2?Simense?Motorola?PCB?EMI?PCB?CAD?E
24、MC?EMC?PCB?2.2?A?EMCPCB0001PCB?EMC?2000-09-01?45?45?B?C?L L L?(?)GGGPPPD?PCB?EMC?PCB?CAD?S4G4S3G3P2P1G3S2G1S14424S5G3S4P2G2S3P1S2G1S15323S5G4S4PG3S3G2S2G1S15412S6G3S5S4PG2S3S2G1S1631110987654321?1?S2?S3?S2?S3?S4?S5?S2?S3?EMC?EMC?S4?S5?S2?S3?S5?G3?S4?S1?S6?TOP?PIN?BOTTOM?S6?S2=S3S5S4S6S1;?2?S2=S3S4S5
25、S1;?3?S2=S3=S4S5S1;?4?S2=S3=S4S1;?EMCPCB0001PCB?EMC?2000-09-01?46?46?3?3.1?3.1.1?Ui?1?:Zin=U/i?3.1.2?PCB?PCB?PCB?2?,?dU/dz=(R+jwL)I?1?dI/dz =(G+jwC)U?2?U=A?erz+B?erz I?A?erzB?erz?3?r=(R+jwl)?(G+jwc)?EMCPCB0001PCB?EMC?2000-09-01?47?47?4?Z=(R+jwL)?(G+jwC)?4?R?G?5?Z?L/C?6?(z)=U(z)U+(Z)=I(Z)I+(Z)?3.1.3?
26、3?V1?Z11?i1+Z11?k?i2?7?V2?Z22?i2?Z22?k?i1?8?k?i1=?i2,Zo=Z11=Z22?V1?Zo?1?k?i1?9?V2?Zo?1?k?i1?10?Zodd?Zodd=Zo?1?k?11?Zodd?Zo?2?Zodd?EMCPCB0001PCB?EMC?2000-09-01?48?48?Zdiff=2?Zodd?12?i1=i2?V1?Zo?1?k?i1?13?V2?Zo?1?k?i1?14?Zeven=V1/i1=Zo?1+k?15?4?L1?C1?L12?C12?L0?C0?,?Kc=C12/C1,?Kl?L12/L1,?1?dU1/dz=jwL1
27、1*I1+jwL12*I2?16?dI1/dz =jwC11*U1?jwC12*U2?17?L11?L1?C11?C1?C12?U1?U2?Uo,I1=?I2?Io?dUo/dz=jwL11(1?Kl)Io?18?dIo/dz=jwC11(1?Kc)Uo?19?20?Zo=L11(1KL)C11(1+KC)?21?Vo=1L11(1KL)(1+Kc)?EMCPCB0001PCB?EMC?2000-09-01?49?49?22?Ze=L11(1+KL)C11(1Kc)?23?Ve=1L11C11(1+KL)(1Kc)?TEM?Ve=Vo?V=1L0C0?Ve=Vo?Kl=Kc=K?K?24?Ve
28、=Vo=1L11C11(1K2)=V=1L0C0?L0?C0?L11?C11?1?K*K?25?26?L11?L1?L0?23?C11?C0/(1-K*K)?27?Z0=L0/C0Zo1=L11/C11?20?22?26?27?Kl =Kc=K?28?Zo=Zo11K1+K=Z0(1k)?29?Ze=Zo11+K1K=Z0(1?K)?(10b)?(13)?PCB?PCB?4075?10?33?EMC?EMC?EMC?3.2?PCB?PCB?PCB?PCB?EMCPCB0001PCB?EMC?2000-09-01?50?50?5?10?0.1mm?0.2mm?0.3mm?0.4mm?0.5mm?
29、0.6mm?0.7mm?0.8mm?0.9mm?1.0mm?1.2mm?1.5mm?1.6mm?2.0mm?2.4mm?1080?2116?7628?PCB?PCB?PCB?PCB?(),?()?Z0=L0/(C0+C?)V=1L0(C0+C?)3.3?3.3.1?5mil?EMCPCB0001PCB?EMC?2000-09-01?51?51?PCB?6?5mil?PCB?7?5mil?4mil?26mil?4?32?PCB?3.3.2?13 mil?PCB?8?13mil?PCB?EMCPCB0001PCB?EMC?2000-09-01?52?52?6?13mil?4mil?34mil?35
30、?55?20?5mil?3.3.3?25 mil?7?25mil?PCB?8?25mil?25mil?30mil?EMCPCB0001PCB?EMC?2000-09-01?53?53?4?10?EMI?3.4?guardline)?3.4.1?PCB?8mil?8mil?12.50mil?51.18mil?PCB?9?PCB?12.50 mil?10?12.50 mil?27.36 mil?EMCPCB0001PCB?EMC?2000-09-01?54?54?11?27 mil?50 mil?12?50 mil?1?2?10mil?4mil?26mil?27mil?4mil?26mil?48?
31、54?50mil?4mil?26mil?55?70?3.4.2?8mil?8mil?27.38mil?EMCPCB0001PCB?EMC?2000-09-01?55?55?6mil?12mil?9?XTK?A?4mil?PCB?B?6mil?4?5?12mil?1?3.5?,?GND1,GND2,GND3?VCC1,VCC2?VCC3?VCC1?+5V?,VCC2?+3.3V?,VCC3?1.5V?,?35?,?49?,?.?,SD535?GTL16923 B?,?EMCPCB0001PCB?EMC?2000-09-01?56?56?.?,?SD535?GTL1655?.?:?;.?,?.PC
32、B?2.2mm10%?PCB?8mil,?10mil?7mil?8mil?50 10%?10mil?45 10%?7mil?49 10%?8mil?46 10%?10mil?4110%?EMCPCB0001PCB?EMC?2000-09-01?57?57?4?PCB?EMC?I/O?EMCPCB0001PCB?EMC?2000-09-01?58?58?5?5.1?PCB?PCB?PCB?PCB?5.1.1?(?ANSOFT?TDR?D2:?:inch?D1:?:inch?T:PCB?:inch?C:?:pF?h:?inch;d:?inch;?EMCPCB0001PCB?EMC?2000-09-
33、01?59?59?L:?nH?pf?TDR?67?5.1.2?5.2?5.2.1?PCB?PCB?,?:?,?,?,?,?,?,?,?EMCPCB0001PCB?EMC?2000-09-01?60?60?1?PCB?2?67?0.055?50?5%?3?4?PCB?A?PCB?B?C?5.2.2?TDR?0.5 ns?1.0ns?500ps?1000ps?EMCPCB0001PCB?EMC?2000-09-01?61?61?ps?ps?PCB?1?2?3?1GHZ?EMCPCB0001PCB?EMC?2000-09-01?62?62?6?6.1?PCB?6.1.1?/?PCB?6.1.2?1?
34、1?2mm?1mm?6.2?PCB?EMC?PCB?EMC?6.2.1?EMCPCB0001PCB?EMC?2000-09-01?63?63?2?A?B?2?3?3?6.2.2?EMCPCB0001PCB?EMC?2000-09-01?64?64?PCB?6.2.3?4?4?EMCPCB0001PCB?EMC?2000-09-01?65?65?6.3?6.3.1?6.3.2?PCB?6.3.3?5?5?6.3.4?6?6?a?A?B?6?b?A?B?6.3.5?EMCPCB0001PCB?EMC?2000-09-01?66?66?2mm?1?PCB?7?7?6.3.6?I/O?8?RF?Qui
35、etInterfaceGround?8?8?PCB?I/O?EMCPCB0001PCB?EMC?2000-09-01?67?67?PCB?GND?9?RS-232?9?PON?GND?DMU?PGND?GND?ADM706?PCB?PCB?GND?ESD?6000V?DMU?PGND?GND?ESD?ESD?6000V?EMCPCB0001PCB?EMC?2000-09-01?68?68?7?EMC?EMC?EMC?7.1 EMC?EMC?Electromagnetic Compatibility)?EMC?1?2?3?EMC?1?2?3?PCB?EMC?1?2?3?PCB?EMI?Lucen
36、t?,?EMI?EMI?EMCPCB0001PCB?EMC?2000-09-01?69?69?7.2?CAD?EMC?PCB?7.3 EMC?EMC?EMC?EMC?EMI?7.4 EMC?EMC?1?EMC?ASIC?2?EMC?3?EMC?4?EMC?di/dt?1GHZ?EMC?EMCPCB0001PCB?EMC?2000-09-01?70?70?7.5 EMC?1?EMC?2?EMC?3?PCB?EMC?CAD?EMC?EMCPCB0001PCB?EMC?2000-09-01?71?71?EMC?1?1.1?PCB?EMC?EMC?XXX?XXX,?XXX?XXX?XXX?1.2?1.
37、2.1?T ra n s m is s io n L in e B e h a v io rR sZ OR LV ste pV ste p =Z O*V in(R S+Z O)p*V s te p(1+p)*V s te pp =(R L-Z O)(R L+Z O)V se tu p?EMCPCB0001PCB?EMC?2000-09-01?72?72?-1?+1?+1?-1?IC?T?-?-?,?T?-?EMI?EMCPCB0001PCB?EMC?2000-09-01?73?73?1?8?8?1?1?4?4?1?2000mil?1.2.2?100M?GTL+?EMI?TI?GTL1655?G
38、TL16923?LVDS?EMI?1GHZ?ECL?CML?2.5G?EMC?3W?2?EMC?2.1?EMC?2.1.1?2mmHM?2mmHM?A?B?C?A?(Function block)?(?)?B?C?2mm?EMC?AMP?HS3?2.1.2?EMCPCB0001PCB?EMC?2000-09-01?74?74?kkkkkkkkkk?2mmHM?L=5dln(d/w),L:inductance,nH,W:?inch d:?2.2?2.3?2.3.1?EMC?PCB?BGND?-48?,?-48V?-48V?COPPER?EMCPCB0001PCB?EMC?2000-09-01?7
39、5?75?10mm?2.3.2?BGND?PGND?GND?GND?PGND?GND?PGND?BGND?EMC?PGND?GND?EMC?2mm?15mm?2.3.3?1?PCB?20H?20?20H?20H?PCB?2-3?2?3W?3?/20?4?EMC?CPCI?EMCPCB0001PCB?EMC?2000-09-01?76?76?PCB?EMC?EMC?EMC?PCB?PCB?EMC?1?PCB?1.1?FR-4?1GHz?Er=4.25?0.2?Tg=135?UV?Tg=140?UV-BLOCKING?PCB?1.2?TACONIC?CER-10?10GHz?Er=10?0.05R
40、F-35?1.9GHz?Er=3.5?0.035TLX-0?10GHz?Er=2.45?0.04TLX-9?10GHz?Er=2.50?0.04TLX-8?10GHz?Er=2.55?0.04TLX-7?10GHz?Er=2.60?0.04TLX-6?10GHz?Er=2.65?0.04TLC-27?10GHz?Er=2.75?0.05TLC-30?10GHz?Er=3.0?0.05TLC-32?10GHz?Er=3.20?0.05ROGERS?PCB?FR-4?RO4350?10GHz?Er=3.48?0.05RO4003?10GHz?Er=3.38?0.052?EMCPCB0001PCB?
41、EMC?2000-09-01?77?77?2.1?1?AT?A1?A2?ATA1ATATA2?1?L?2?AT?A1?A2?Z?U?ATA1ATATA2?2?L?2.2?n?n?3dB?9dB?3dB?3(a)?3(b)?a?b?3?2.3?EMCPCB0001PCB?EMC?2000-09-01?78?78?PCB?50dB?,?30?50dB?PCB?30?50dB?PCB?2.4?PCB?PCB?PCB?PCB?/20?PCB?EMCPCB0001PCB?EMC?2000-09-01?79?79?0.5mm?1mm?4?1mm0.5mm?4?2.5?PCB?PCB?PCB?5?F C1+
42、(L/a)2KL?K?K?11?(h/b)(1?1/Er?2?F?MHz?L?a?h?PCB?mm?L?a?b?mm?Lab?C?3?1011 mm/s?rPCB?EMCPCB0001PCB?EMC?2000-09-01?80?80?Lhba?5?b?h?PCB?h?PCB?b?PCB?a?a3WWb?8?R3W?8(b)?5.3?PCB?9?3W?3W?2W?W?3W3WW?9?5.4?EMCPCB0001PCB?EMC?2000-09-01?85?85?20dB?PCB?10(a)?L?L=/4?50?LDWa?b?R=100 ohmZ0=50 ohmZ1=70.7 ohmZ1=70.7
43、ohmACCZ0=50 ohmZ0=50 ohmB?10?5.5?PCB?10(b)?Z0=50Z1=21/2 Z0=70.7?B?C?LBC?LBC=/4?100?5 5 5 5.6.6.6.6?EMCPCB0001PCB?EMC?2000-09-01?86?86?11?a?d?jL=jZosin jC=j(1/)tg(/2)?Zo?b?e?Zop=-j(1/Zo)ctgp?p90?g/4?c?f?Zsh=j(1/Zo)tgsh?sh90?/4?90?/4?100?/4?EMCPCB0001PCB?EMC?2000-09-01?87?87?/4?/4?12?PCB?/4?/4?12?/4?5
44、.7?PCB?13?3W?3W?W3W3W?13?5.8?EMCPCB0001PCB?EMC?2000-09-01?88?88?1.5W?/20?6?RF?PCB?PCB?PCB?EMCPCB0001PCB?EMC?2000-09-01?89?89?1?PCB?1.1?PCB?PCB?1.2?1.2.1?PCB?PCB?15?15?1.2.2?PCB?PCB?ELV?1.2.3 PCB?EMCPCB0001PCB?EMC?2000-09-01?90?90?slow?fast?time lag?Low-breaking?high-breaking?T2.5AL,250V F3.15AH,250V
45、?6?F1 F10AH,250VAC,“CAUTION:For Continued Protection AgainstRisk of Fire,Replace Only With Same Type and Rating of Fuse.”1.2.4?EMCPCB0001PCB?EMC?2000-09-01?91?91?1.3?PCB?1?2?1?150V-300V?6.33.0600V4.0400V2.50.7250V3.21.7300V2.00.7200V2.5250V1.60.7150V2.0200V1.50.7125V1.61.4150V2.01.20.771V1.21.050V4.
46、0?mm?mm?mm?V?mm?mm?V?mm?EMCPCB0001PCB?EMC?2000-09-01?92?92?2?300V-600V?6.35.8600V4.03.5400V2.51.7250V3.22.5300V2.01.7200V2.52.0250V1.61.7150V2.02.0200V1.5125V1.6150V2.51.271V1.250V 6.3?mm?mm?mm?V?mm?mm?V?mm?1.4?CAD?PCB?1.4.1 PCB?PCB?1.4.2?V-2?1.4.3?GB4943-2000?IEC60950?1.4.4?GB4943-2000?IEC60950?1.4.5?GB4943-2000?IEC60950?1.5?PCB?EMCPCB0001PCB?EMC?2000-09-01?93?93?3?3?MIL-STD-275 Printed Wiring for Electronic Equipment?Inch?EMCPCB0001PCB?EMC?2000-09-01?94?94?