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きゅうたひきぎ
5 years ago
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3 khz18 GHz CATV MATV IEC A B (ITE) 2 (3) 4.1

4 (1) 3 (CISPR) 1 (CISPR ) (CISPR ) (CISPR ) (CISPR ) 30 MHz 1000 MHz (CISPR ) (2) (CISPR) 12 (CISPR ) (3) (CISPR) 1 (CISPR ) (4) JIS C EMC IEV (5) IEC (6) ITU-R BT JIS C

5 (1) D/A (2) (3) AM CATV ITE ITU-R MATV RF RF

6 % 80 % (6 ) MHz db(µv) ) ) ) (1) (2) (3) ( ) ( ) ( )

7 2 75 Ω 75 Ω L Z = L log(z/75) db(µv) db(µv) 75 Ω MHz 1) 30 MHz 1 GHz ) RF 1) 1 GHz ) RF RF 5.5 RF RF RF RF RF - 5 -

8 MHz RF ( ) 1) 1GHz db(µv) 75 1) MHz db(pw) ( ) ) ) 1) m MHz db(µv/m) - 6 -

9 ) ( ) ) MHz 57 MHz 300 MHz 70 db(µv/m) 90 MHz 300 MHz 200 MHz 66 db(µv/m) GHz db(pw)

10 (6) RF ( ) ( ) a) 1 khz 37.5 khz b) 1 khz 50

11 a) : 1 khz b) : khz c) : khz d) : 523Hz e) : khz30 MHz RF 0.15 MHz30 MHz 2 (1) 12 mm

12 MHz 30 MHz µh RF 2 cd/m 2 30 cd/m 2 80 cd/m 2 30 cd/m 2 30 cd/m 2 ( ) ( ) ( )

13 RF RF RF MHz 30 MHz µh RF 8 1

14 (1) 0.8 m m RF RF RF MHz 2.15 GHz RF RF db(µv) 70 db(µv)

15 db ) m db(µv) MHz2.15 GHz RF RF

16 5.5.1 RF RF RF RF RF 1 RF RF MHz 300 MHz MHz MHz 300 MHz

17 (1) (2) m 0.8 m 1 RF 2 30 MHz 5 m 2

18 ) db(pw) 2 (1) MHz 1 GHz 3 m (1) 2 (3) mm 11 6

19 m 9 m 3 m 80 MHz1 GHz 4 m 4 m A db A = Pt Pr Pt db(pw) Pr db(pw) A = Va Vb at ar db Va Vb Vg db Vr a) b)

20 at ar db a) b) 3 db 1.5 db m 0.3 m 0.4 m m 6 m 1 2 V 45

21 m 4 m 80 MHz 1 GHz λ/2 30 MHz80 MHz 80 MHz λ/2 30 MHz80 MHz 4 m m m 1 4 m 2 4 m

22 GHz m 10 db 0.3 m 0.4 m

23 d d 2b 2 / λ b λ h=1 m d cm 15 cm 1.5 db 1 GHz 4 GHz 4 GHz

24 db db(pw) % 80 % a) 6.2 b) 1 b)

25 6.2 5 t 5 3 Xn ksn L Sn n Sn 2 x ix 2 n xn n xi k 80 % 80 % t k n L xxnsn L db(µv)db(µv/m) db(pw) n k

26 A C D D C C D B (%) 0 W Y C G M R B BK 100/0/75/0 W A: Y C B: G M C: R B D: BK ITU-R BT ( )

27 a ( )

28 50 µh 250 nf 1 2 S 50 Ω 1 µf 1 µf P 1 kω 1 kω 1 Zo=50 Ω 50 Ω 50 µh 250 nf 2 S P 50 Ω - 50 µh µh 1.2 µf 10 Ω 50 µh 8 µf 5 Ω P 0.25 µf 1 kω 1 2 S 50 Ω 10 Ω 1.2 µf 5 Ω 8 µf 1 kω 1 Zo= 50 Ω 50 Ω 250 µh 50 µh 0.25 µf 2 S P 50 Ω - 50 µh - 5 Ω

29 80 cm 80 cm 80 cm 80 cm 40 cm 80 cm 80 cm cm 20 cm 40 cm 80 cm 80 cm

30 RF

31 m 6.0 m 9.0 m m h = 1 m 4 m 0.8 m

32 40 A = 20log f A (db) f (MHz) 3 1 h = 1 m 4 m 0.8 m 14 3 m

33 A ( ) A.1 2 (3) A.2 A.3 A.3.1 A.3.2 A.3.3 RF A.3.4 RF

34 B A.4 4 A.5 A.5.1 A A pf 30 MHz 700 A.2A.3 A.4 A.5.3 A db(µv) A db(µv) 1 khz 6 db A

35 54 db(µv) 60 db(µv) 60 db(µv) Mbit/s 1 khz 6 db A cm 80 cm 80 cm 80 cm 40 cm 80 cm A khz 30 MHz ( )

36 50 Ω T 510 Ω T 1000 pf 75 Ω N-R 50 Ω 75 Ω NC-R 1:1 510 Ω 1:1 46 MHz 1.5 GHz 30 db 50 N-R 75 NC-R A.2 46 MHz 1.5 GHz

37 50 N-R 125 NC-R 65 (mm) A.3 46 MHz 1.5 GHz 0 Isolation Loss 0-10 Loss (db) (db) (MHz) Freq (MHz) A.4 46 MHz 1.5 GHz

38 B B.1 MPEG-2 MPEG-2 1 khz -6 db 1 khz 6 Mbit/s 192 kbit/s B.2 TV ARIB STD-B21 ARIB STD-B31 34 db(µv) 89 db(µv) 75 Ω 470 MHz 770 MHz, 5.7 MHz OFDM 8 k, 4 k, 2 k QPSK, DQPSK, 16 QAM, 64 QAM 1/4, 1/8, 1/16, 1/32 1/2, 2/3, 3/4, 5/6, 7/ Mbit/s

39 B.3 TV 1 IF ARIB STD-B1 48 db(v) 81 db(v) 75 Ω 1000 MHz 1550 MHz, 27 MHz 12.5 GHz GHz QPSK 1/2, 2/3, 3/4, 5/6, 7/ Mbit/s 1 IF ARIB STD-B20 ARIB STD-B21 48 db(v) 81 db(v) 75 Ω 1032 MHz 1489 MHz, 34.5 MHz 11.7 GHz 12.2 GHz TC8PSK, QPSK, BPSK 2/3(TC8PSK), 1/2, 2/3, 3/4, 5/6, 7/8(QPSK, BPSK) Mbit/s B.4 TV JCTEA STD-002 JCTEA STD db(v) 81 db(v) 75 Ω 90 MHz 770 MHz, 6 MHz 64 QAM or 256QAM Mbit/s (64QAM) Mbit/s (256QAM) Mbit/s (64QAM) 38,883 Mbit/s (256QAM)

40 B.5 ARIB STD-B1 CS CS ARIB STD-B20 ARIB STD-B21 ( ) ARIB STD-B31 JCTEA STD-002 JCTEA STD

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untitled 164 2.1 C/N 165 2.2 3 CTB 170 2.3 172 2.4 C/N BER 174 3.1 179 3.2 182 1. 1 () 2.1 C/N 2.2 3 CTB 2.3 2.4 C/N BER 2 () 3.1 3.2 2. (OFDM)(64QAM) C/N 2.1. C/N 2.1.1. ( 2 2.3)() C/N C/N C/N CW C/N (C/N ) 2.1.2.