m I o o Fl. -t o I J II o o IT - o tr II t+\ a U o a II GI I J ,Ar C.) V a 9,. @ 6[ - f-=o) ?D!o gd- r-- .^. ;.i O J, lll A 19=6 1- - Ee o f t! s) ; o o p
mI
ooFl.-toIJII
ooIT
-otrIIt+\aUoaII
GIIJ
,Ar
C.)V
a9,.@6[
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1-
-Eeof
t!s)
;oop
o
j rYl \ c.zss /,'a,k
P*&,ientj
,e dBTJBN'o'tJ dBm i^
,(:rc) dB=JBtl :
. eBr- : dBbJ
, (x\ dBrn : \o L'3 @I ),,nUatf
, ''.
\o L.J ( dBu roLg7D-
U; .,ts--oa-t4)2
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,utt )J-JI
. J B r?L *, \' t'-Jl.*ra^raJ*)J
rl),L*t
Dx t-
+ 3a
X: I uto{f'
--- Xla/,J= \oL'3
\o 3
)-
f,\ l,J *9-l-
o JAU a,,, o JB
I lag^ = \,L'3 ('o'm*H-)- 3o JBm
(t
| -- x-lx\darc tJBu+ Jo
safe Jlife link Budge_f
@
flans p orh-ale I-
c*.L-
Lb" ,! t(P;,At
D.L.
Er*f
@uc-l-rOP-@
@
G)
G)at
@ Eb=@ N.F
@A/":
)/o
@ ea l/,@ D-L
= Ar + Alrua +--
G
u
a
sC
e),I
- P +. - L 6o
EIIP: P'
( Lu+L P)
Lfr + t+ PA ,^(t Ll = LL+ L/)
+AL A+--rc,L'3 k-t+r):Ef-it t'-Lp - Lu
=C = e-L?
c . Tb 4 o-i- Aec- 2* (c-: S)
= 2t/oise /i3nr._ (l+TqtT)
c-*rrie/- h Noise =--l k --
R!:5,
=gi /ffi :"iii ro€-')<
(Ett,rt,lq* (ttlr{it({ut tt.)n + (EL l^/") D
Lo
)'/ rt rr-D1-lrrLp= 1"L.3
At!, @ H-L=
f|, --+: ol P po uer '/* '*'- /-t=-'s' /' o-nj-enn-q
Lu"-> bou./< - ,// La gse s
Lvl*= brz,".hiry g- /-"-Jfnq Lass : (LrhL tlra){
At ----+ *rc-r,.s- onLeru1e* go/n'
p- = roJrofeJ /oder /**, /t=,'sd/-kr
s1--+ A*oi"-v*J /ouer itt soL' /*'-'*
*p/trruk = P."* = TPt* ' Aue-F /" D'L
L"l -- Jo u-trt- lt rt K L o 5 s as
:
o
(sof" e-qwn%'afts)1F @
Ea.= btf *e,vsrg1 - C. Tb : C/{b
Culaa = clas +TISaE TR,
@ S f/".%,,/e is,*rc/i. tad tn*eJ pouer
-i tn- c)A :- f- + A t"
rodir*fed pouter \rrl-err.o- 'cLfr.
'
aa Twts - /oul€rPrt)vZ 'ol;fiful e' lr)
dt**eJ ,1oure'r /..J eJ orr*e./l/l*q
--- E rR? lro : p_l,T A+ lu_ P*l; Lr" [r,*
ot lr; Lt P Ilte
@ equiva-l.of N,ise mp tolr^re r- (E)
No fi-,{sNA;,r
N"{ *a
J'( rBkrBA
JNA.ttNF
NiT-
Ni -
Aawr€
l
t N" = r klr4 BA = tBA(T* r*)
@
-r AlF: NoASi I N, A-Nt
tT-+ l<-) : I+ TA
LN.F - rlTL1 :T<*:
CQ No I se J*nsf*.Y i-
nI V/\./ o L- f( T=-I
:,N,lb
O ca-rFiet* l- No' se deruslbr-
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kEt ; c ----.+ ca- rri er ,lruter(c = d +Ar- Lb*L,tL NA)
@ Bi f-erwr;) h Ns ised e'tsi\ F
e/ Ft c/ Ft = (*)-(%)Eu=rJ" /!lB N,
,=L n ; A- NA* FSh B''- As'tb,9*/{
zFa,l*Sr-*
H fuin- +" €{t.tlva-lenf Mnise-
TZ,*-prv**/fE* fz h^, t-c)
- G Ialtt
G = Ar-lf. ALL,vAllru
= Ar las + h(LN'+)l,u T" Iru
ts) Lp = P*/-L
c'l aa =
1,3(#)z* Lplrrt
Lo sS :
ETR
la
P lro
(il An- tertn*o* gc*irur on^ter?aa. 4/.,fur1.. u/A."rua*- y' L'-,L',, ( l: J
@ qrd1): q--sr ( =W*&3 ^4)l <=f =*aL. c--'i
)k 'Je h'ava
s.rl *ll i /-e
Pft
3-*VP 4s , y'
r.,,irz- p)vblens )-
O Li n k Bn4ef, (uL-) o r(|.-L,),F (u-L', D-L')
trL
,.4 e.H*a/- \-,
Ps,vt *--J
VA^ #-\ (*)t-r)
@ Eb I --l
1/ , *-e
a-L B,*clge-l* 1 ( El t No ) vL-1 . E c-
D -1. S*/Set + (H/No) r-r-- (--
) *-r-(tu /1>ulrll* L ,Jo lo-L.
*x r-
complete the link budget for 1 satetlil.l -system
with the following
pa-rameters.
uP-lint<
1.
2.3.4.
Earth station transmitter output power at
Earth station back-off loss
Earth Station branching and feeder losses
Earth station transmit antenna gain(from.Figure 10.19, 15 m at L4 GHz,)
Additional up-link atmospheric losses
Free-space path loss
33 dBW v"3dB /4dts u
64 dB0.6 dB /
t,'
v0dB120 Mbps8 PSK
t0 dBw0.1 dB0.5 dB
30.8 dB0.4 dB -t;Jl.--, a 7?
205.6 dB E-/;t D.L i
--$, rtAn -- -<
tEr l rr\ u'L' -tJ
ln"- = l{6 H?
Lp=.roL,J(*)"'(-D= 3690ot<n
+l
rl N,f Sivetr
5.
6
)3.4.
:) at 14 Ghz)
7. Satetlite riceiver G/T" ratia8. Sateltite krranctrirtg and feed,er losses
9. Bit rate10. Modulation sclteme
Down-link1. Satellite transmitter outptrt porYer
at saturation 10 WSatellite back-off Ioss
Satellite branching and feecler losses
Satellite transmit antenna gain(from Figure 10.[9, 0.37 rn at 12 GHz)
5. Additional dor+'nlink atrnospheric losses
6. Free-space path loss
, at2'). Ghz)7. Earth station receivc antenna gain
(15 m, 12 Ghz)8. Earth station branching and feeder-losses
9. Earth station eqtrivalent noise ternperature10. Earth. station G/Tn ratio11. Bit rate12.Modulation schertre
v,tote- 1* fb-* D.L.+ u.r, -r,* (r, *Esl
62 dB0dB270 K37.',7 dBIK-l120 Mbps8 ['SK
Tf ^/" I giv en
ar i-r. | ,*h
@ ?L-L. B wdie)-O .)6r ,lpi)-"t
-L4;qpt tff
14
oP- Lb" LuL + H?AP+
33 ^3
@ EfRP: Dl/-
2-6
: GrRP_C-=l-i
= I o 0'6
+
+ 6 Y _ ?o JB
Lp Lq
tLp : llvtldB
D = ?ersoo
-: Lp =
- \o L3 r{o,)'7 +t 68
tLt *ldftr-. = 365*lo
Zct d'Z J B
F .E{: ttll- tM' l.p L" I
-: .' I * lod''Lt) By'o | "t
B
cltru
(.rt.,r'r)
totr-Z-1oL"3 (lz')kto") ,,
LS,N JB
: Eb - l-:t\/ o
? s q JB +*Jt
B-+f*3
lP,
CIN las
-: (c-(N) : 3o-LJB
L"j (+)/ I Lo
lo LoJ /-T-t lLo
(srs k)
x lo{ \I
# 16 { J* [6 {
?-k (Z"3E _= '(T)\- B *k:
.7-J- t-*
(k.
LJ."-
- S--t\: q--/
N"-= t"
@ D.Lr \- (G/!).
ETrq,P= P+t-A+ Lb'-LuF
= \o dbt^l '+ lo- BcJB -6'I
: Lto-L JBU
c)B - o-sd8
.-\ EfAP-LP-Ld =4'o'Lt-
*LoS- d -
Lt t{ s' B 'l'B u/o- l, -
C,...#1 *l EFr4
)ou - ro
Tzl
L,s (t ): L oo- 5JB
Et...'l-/a lo, - \o LoJ Pt
PL
\oo*5 * \o L'J
Le-? dB 3
(tzo *lof, )
BT = 2r{_j d0
trP : \oL,$ (Zl-S ) - Lg.-Td B
:73-S
l{)- ,'1 alllCliiie s"r.,itcr-n {)ilil:i!rli:s :it l4i i2{il:{.r, lr:ii rll antr;ri'rlr:j ir.;'r rif-rit:er-tin'c cliicierlrl,or'Si'),,,, rr,rnpjl'i,-.iii i'i,ji,:',i ilg lir: ji lliiii.^;'l:lip-link puranrt:tcr.i: {iistnuril {lf r50{i{iK}x" rtrt}r starion {ji P i:ower'lK\Y, e:irtir ri:rrir)ri lliri)..-of'f luss 3.5rii3, eirrth statior hr',tncititt.1 lnri {'ce tler- ioss .13d l}, r.ar-th s*atiur-r altenrta ot' I llnpa:'rrbolie disir ttntennrr. tilLlitir,inal upiinL losses 1.2r'iii, sate liite ret:eil,ing irntenilit oi'0.5mparab0lic c.lish rrnt*lnnrr,:satrllite re cejyer etlrrivalent nujse ttrmpei'ature 350K, sate llitc receiyerLilA gain of 5118, trirnsmission bit r:rte 120ITpbs, QPSK rnorluiirtirin sche me.Iiorvn-litrk pai'l'rmeter-r; ili:tancr -18{)tlLjlinr, srrteliitc trunrsmitter Oi P p{)!yer 15W, seteiliteirttrsmit antennt of 0.8rn palabolil: dir;Ltnlenn:i, saiellite ilroriulrltion bacli-trJf Joss 1rjlJ,i:ririiticnal rli>wn linl; iossrc rti'0.fidli, e:lrth stniir.;rl rcceivrr nlrirnn:1 ut 1?in. i-rlr::rbolic rlish;lttfenn;1.- rai'th st;ltion ccir:iv;r)eiri noi:;r: temi;tt-rririre zlli{lJir,iarth.stlrtion r-ecei-"rr 1,HA g:rin oi"10d8, eirrth stltion hr;rnchii-rg;i;rti *ertitr loss ol'$.5r1'll" hit rrte oi l2{iMbps, {l}'5i(.i. r, iL.i rr l'l ti"n.
looot^):3"d8P+:O u,-L. r-
Lb" =-3-sdB
df =o-S t*-r"
Lul:3dB J + : lLm-r ls-=ldB
-f.q: jSo"k Ar,u* : SdB Ft*lzoNb{S
Z.N = o-ss : , G. Psh- )u1'et*)^'hV'
-= L=-t.tG Yrz3 x-\o I
R rLr"L.j ery-)
tt,rTf *3Sooo+\o) 2 zod.z-\d'B3 /(\,' )
Ar = ro 1,3 (t,u (''*" )'){l-_-3\ dB
3-| 'to[t *\oe
LP=
= \o 1,3 ("'tt(tffi
2a L,3
\v L'S (
et) =
)):
Ar= \c L*3 (,-ss(sff|)') : 3't-7JB I
p,,* ftjo
Lb,
3-5
L
3
brL3- SJE
rt? pft/at
P- , AE:/I-l-'/\--23.5
8 s .81
+- {z-- 3
JB
ef,q'P*Bs.Bl
,li /) -
{-t4+t
C: g + r i"rlil=1
(-*+x:-^-** )
-Bt?/toc-: - 8l-9 dl3 = \o : tr-'l *\oB G,
*: Ea / ---r"Jo lq.L-
c- -1-6F-T<q K-r*4 Ft
(;-*rs "qt(Ga *tr") (3s,) fi2"*la{ )
=* \t\i3e^*5 *: Sa tS CB
-*lo. 3'1. ed$ :: 3"2o j C : *8d-9d9
Etll-
/u. I av(rrl3)d-e) ( \r,3r'
s/'' )
(tt ltlr. r)+(tast'e/r")
3 oa
_____Azimuth ongle referenced ro lgoo (degreeil i
15
20
25
30
35.
40
70
65
60
55
50 ;45E
o!E
Icg.,gU
45
50
55
60
65
70
75
80
85
4oo!f
:s "Eqo
JU;
--tf
20_
l5
10
5
05 lo is zc 15 30 3s 4a ,rs - sffi#-*"-snoAL (degreesl
G14. Comptete the following link budget:
UP-LINK PARAMETERS
t. Earth station transmitter output power at saturation, 1 kW2. Earth station back-olT loss, 3 dB.3. Earth station total branching and feeder losses, 3 dB4. Earth station transmit antenna gain for a 10-m parabolic dish at 14
GHz5. Free-space path loss for 14 GHz6. Additional up-link losses due to the earth's atmosphere, 0.8 dB7. Satellite transponder G/T", -4.6 dBK8. Transmission bit rate, 90 Mtrps, I PSK
DO'W.LTNK PARAMETERq1. Satcllite transmitter output power at serturation, l0 W2. Satellite transmit :rntenna gaiu for a 0.5-m parabolic dish at 12 GHz3. Satellite rnodulation track-off loss, 0.8 dB4. Free-space path loss for 12 Gl[r5. Additional down-link losses due to enrth's atmosphere, 0.6 dB6. Earth station receive antcnna gain for a I0-rn parabolic dish at 12
GHz7. Earth station equivalent noise tenrperature, 200 K8. liarth statiom ]-rranehing and fi:eiler fiosses. 0 rtl]9. Transmissiocr bit rate, 90 ivli:ps, I tr'SK
,r;' // L' sa /r-=J t\'-r 5e-<'9'n
R"P, -f Y(-
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I ocBDY7+
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rnl"-x
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P'
fFa-rl-lloI
rs).-"P-llb&,
qNIl
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tt\tF'\uh
6Fr\)
a_)Its]
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N.s\bh\
ll\bCI
)u.
\VI
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ttA
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$Nl"+-etll;a,b
t=tsLorlo,ss-6
CD\i'l.sTsltn
$
rfI
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{-rll
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r+ll F r--tw (1"'a_ilbH
arb
14
lu
Ir
nr
O LLp ltn}t 6
oP- - %*r{,+ PP/a-tLr-/= / I I3o dB u lag
,!o n -sJB
(frh)
= Z( dB^)
D -rt*
zr+dBtl
+r lorn
-d8wfra: *Y/ed6/
o -BdB
. eL- C1- t- AJ" )l
dg trlto(4(b)
l-3grUff
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I
3"6I
, €a-rrier fu /'Jrise rfuur srylzo)
ff:Z* beA= Pe
=*
.7L---
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q- lt'lY g D= ?{Soa ht"^.aS
Lutl
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aL
52-:9=L A-Jq
C.z: {oq r8/ to
: u*'fLT*t