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1. 2. 3. 4. 5.
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3

/
? mWWkW ? dBm 1mW ? (dBm)=10lg(mW?1mW) 5W?10lg5000=37dBm; 10W??10lg10000=40dBm. 3dB ?
4

dB
? D dB ? dB=dBm?dBm




5

dB
? dB ? dB=dBmCdBm




6


? BWK0.1 ? BW-3dB ? K0.1-20dB(-40dB -60dBBW 1 3dB K 0.1=BW 0.1/BW

20dB

BW BW0.1

fC
7

f


? ?

8


? VSWR ? RLdB) =dBmC dBm
SWR 1.2 dB -21 1.25 -19 1.3 -17.6 1.35 -16.6 1.4 1.5

-15.6 -14.0

9


? ?1?2 |p ?1 q ?2 | p+q2 ?1C?22 ?2 C?1 ? M3P3 ?1?2P 12M3 M3=10lgP3/P1 (dBc)M3
?P1 ?2? 1C?2 ?? 1 ?? 2 ?P3 ?2? 2C?1 f
10

NF
? NF dB ? NFdB=dBCdB ? NFdB NF=0dB1

11


? dB ? dB=dBm? dBm 20dBm 10dBm 19dBm

10dB 1dB
12


? dB ? dB=dBm? dBm ? LC1 2 L12 12
L1 1 2

LC

13


? ? 0.7072?0.5 ? E]T ? H]
14


0.707Emax



2?0

2?0.5

Emax



0.707Emax

15

dBF/B
? D EmaxE0 Ga=Emax / E02 ? GadB=10lg GadB ? F/B dB
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ODP-085/V11-NG

17


? ? ? MS MS ۨ
18

2

19

Amplifier
? Amp. LNAPA ? (ALC

LNA

PA

20

FilterDuplex
? ? BW ? ?
DUP

21


? ?

DUP

22

Attenuator
? Ǧ dB ?
23


R-9110AC
ATT

DT

LNA

PA

MT

ATT
PA LNA



232
Note Book

24


GSM/CDMA

RM-NKC1/RM-NKC2

FD-U900D1850B200NNOO
25

Coupler
? ? 5101520 ?dB 300W60~65dB N
20dBm 10dBm 19.3dBm

10dB 0.7dB
26


900MHz

RC-5NK/NK/NK-05C2.2dB
RC-5NK/NK/NK-30C0.4dB 800~2500MHz

RC-5NK-06F
RC-5NK-20F

1.8dB
0.7dB

800~2300MHz RC-5NK/NK/NK-06F11.8dB RC-5NK/NK/NK-20F10.7dB
27

Power splitter
? ۧ N 50?SMA50 ?F75 ? NSMA ?
10dBm
3.5dB
28

6.5dBm 6.5dBm


900MHz

RD-52N/NP-C03.5dB
RD-53N/NP-C05.2dB RD-54N/NP-C06.5dB 800~ 2400MHz RD-52N/NP-F13.5dB RD-53N/NP-F15.2dB RD-54N/NP-F16.5dB
29


? H ? ? ? SMA/N/BNC/TNC/F/DIN JK
30


N-J8C
8D
NJ-1/2C NK-1/2C 1/2 NJ-7/8C NK-7/8C 7/8

N-50KK
N-50JJ
N/SMK-JK

N-JN-J

N-KN-K
N-KSMK-J

31


? Antenna ? dB

32


ODP-090/V14-NG ODP-030/V18-NG

33


ORA-010-V18-NG 1.2 ORA-008-V21-NG 1.8

ORA-010-V25-NG 2.4

34


IXD-360/V03-NW

IWH-090/V08-NG

IWH-085/V09-NG
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8D()1/2()7/8() 14dB/ 8dB/ 4.5dB/

36






ANT n-mF




PS n-mF
CB n-mF

T n-mF



LD n-mF




AT n-mF



HUB n-mF PA)n-mF



RP (
37




HS n-mF
OPS n-mF

RS n-mF

FROM TO
38

3

39


? dBm ? ߧ / E/O/ĥO/E

40


? E/O ? O/E

41

/
? / /

42

WDMer
? WDMerDeWDMer 1310nm/1550nm 1310nm1550nmܡ ?
1.31?m+1.55 ?m 1.31?m 1.55?m
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? 3 5101520dB ? FCSC

44


? ? 10?m8.3 ?m/125 ?m 1.31 ?m/1.55 ?m ? 50 ?m62.5 ?m/125 ?m 0.85 ?m/1.31 ?m



(A) 3~3.5dB/km

850nm

1310nm
?0.35dB/km 0.6~2.0dB/km

1550nm
?0.25dB/km

45


? ߧ ? §ۧ 25101530m

46

4

47

*
Total Access Communication System
General Packet Radio Switch

2.5G GPRS

1G TACS AMPS
(NMT HCATS)

2G GSM CDMA IS-95A/B DAMPS 80-2000

EDGE IMT-2000 3G
W-CDMA cdma2000 1x/3x MC( TD-SCDMA

70-80
Phone System

2001
Code Divided Multi Access

Advanced Mobile



48

*
PSTN PLMN
2 1

MSC1



MSC2




BS
MS
1

BS BS

MS

BS
MS

MS

MS

MSC

BS

MSC
49

*
1987.11 900MHzTACS 1994-1995 GSM900ؕ, ۧ 1997 DCS1800 1996 CDMAIS-95Qualcomm 1997 CDMA 133 2001 GPRSD 2001 CDMACDMA ABGCDDJABTACS A21B15GGSM900MHz CCDMA800MHz ۧDDCS1800 GSM
50

*
1 2 3
51

*
4
PLL 5 ˧ݦ 6


52

*
1 FDMA TDMAGSMDAMPSPDC CDMAIMT-2000 3G

SDMA3G
2 QPSK?/4-QPSK MSKGMSK MSKGSM
53

*
3 PCM?M16-64kbps16kbps 2-4.8 kbpsLPC 8-16kbps RPE-LPT 13bps GSM CELP 8bps

4
5˧ۧ
54

*GSM900
? 2G ? 900MHz890915MHz935 960 MHz25MHz200 kHz 45MHz=890/935+0.2?MHZ ? 890909MHz935954 MHz 19MHZ ? 909915MHZ954960 MHZ 6MHZ ? GMSK200kHz 270.83 kbps ? RPE-LTP13 kbps ? FDMA200kHz TDMA8
55

*GSM
MS
MS

BSS

BSS BTS BTS
MS

No.7 Sddp

MSS



MSC
SP

PLMN
PSTN ISDN

BSC
SP

SP

BSS
MS

HLR EIR AC

PDN
VLR OMC



GSM
OMC HLR˨ VLR˨ EIR AC MSC PLMN PSTN ISDN PDN
56

BSS BSC BTS MS SP

*GSMMSS
MSSMSCHLRVLREIROMCACSP MSCITU No.7 HLRVLREIR HLRI VLR˨VLR VLRHLRVLR AC EIRMSC
57

*GSMBSS
MSCMSި SAT(SR) BTS BSC BSSBSCBSCBTS BSC MSCBTS BTS BTS BTS
58

*DCS1800
? GSM ? GSM 700m~1200m ? 1800MHz1710~1755MHz 1805~1850MHz45MHz 95 MHz ? 1710~1745MHz 1805 ~ 1840MHz 35MHz ? 1745~1755MHz 1840~ 1850MHz 10MHz
59

5

60


A. B. Cost/Walfish/Ikegami C. Okumura-hata

61

A
? Lb=32.4+20log(d)+20log(f)
d km
f MHz 900MHz Lb=91.5+20log(d) (dB)

(dB)

?

?

62

BCost-231/Walfish/Ikegami
?1

Lb=42.6+26log(d)+20log(f)
f MHz

(dB)

d km1km
?f = 800~2000MHz, d = 0.02~5km; hb=4~50m; hm=1~10m;


63

Cost-231/Walfish/Ikegami
?2

Lb=Lo+Lrts +Lmsd (dB)
Lo Lrts Lmsd

?

64

COkumura-hataOM
?1

Lb=69.55+26.16log(f)-13.82log(hb)
-a(hm)+[44.9-6.55log(hb)]log(d)
d km1~20km;
f MHz a(hm)0

?2

Lb()= Lb-2[log(f/28)]2-5.4
65

Okumura-hataOM
?3

Lb(= Lb-4.78(logf)2+18.33logf-40.94 ?GSM900MHz,
d=1~20km; hb=30~200m; hm=1~10m;
66


? 1~20km 40dB/dec50~60dB/dec ? ? ? ? ? 3dB ? 8~10dB ? 0.2dB/m900MHz) 0.3dB/m(1800MHz) 20dB/dec10dB ?
67


A. B. C.

68

A
? PL(d) = PL(do)+10nSFlog(d/do)+FAF
nSF1.6~3.3 FAF10~20 dB ?d=15GSM900MHz) doڅ1 PL(do)= PL(1m)=91.5+20log(0.001)=31.5 dB nSF2.8, FAF=0dB PL(15m) = PL(1m)+102.8log(15/1)+0 =31.5+32.9= 64.4 (dB)

(dB)

PL(do) do=3~10?

?10 dB
69

B
?

PL(d) = PL(do)+20log(d/do)+?d
?-0.2~1.6dB/m)

(dB)

PL(do) do=3~10? ?d=15GSM900MHz)
doڅ1 PL(do)= PL(1m)=91.5+20log(0.001)=31.5 dB

?0.6dB/m
PL(15m) = PL(1m)+20log(15/1)+0.615 =31.5+23.5+9= 64 (dB)

?10 dB

70

C
?
= + \+
Lb=32.4+20log(d)+20log(f) =91.5+ 20log(d) (900MHz) \\ \5~20dB \20dB \2~15dB

30~40dB
10dB

? 7~10dB
71


15GSM900
? APL(15m) = PL(1m)+102.8log(15/1)+0
=31.5+32.9= 64.4 (dB) ? BPL(15m) = PL(1m)+20log(15/1)+0.615

=31.5+23.5+9= 64 (dB)
? C: PL(15m) =91.5+20log(0.015)+10() =55+10=65 (dB) 5dBm2.1dBi 15: 5dBm + 2.1dBi - 64dB - 10dB()=-66.9dBm
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