3. OMF000004 RF Parts and Antenna ISSUE2.0

8/21/2019 3. OMF000004 RF Parts and Antenna ISSUE2.0

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HUAWEI TECHNOLOGIES CO., LTD.

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OMF 000004

Radio Frequency Part and

Antenna

ISSUE 2.0


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HUAWEI TECHNOLOGIES CO., LTD. Page 2All rights reserved

RF components are widey used in

wireess system! and e""ect per"ormanceo" networ#


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Upon competion t$is course! you wi %e a%e to&

Understand t$e structure and "eatures o"

com%ination unit

Master t$e #ey speci"ications o" antenna

'e a%e to c$oose t$e suita%e type o" RF

component


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Chapter 1Cha

pter 1 RF Part in BTSRF Part in BTS

Chapter 2Chapter 2 AntennaAntenna

Chapter 3Chapter 3 Feeder and TTAFeeder and TTA


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RF (e)ice o" '*S Antenna

**A

Antennastand

+umper %etweenantenna and **A

+umper %etween**A and "eeder

Feeder

,i-$tenin-

arrester

+umper %etweeni-$tenin- arresterand ca%inet

'*S./2

ca%inet

SWITCH BOX

FAN BOX

AIR BOX

P

S

U

P

S

U

P

S

U

P

S

U

P

S

U

P

S

U

P

M

U

*

M

U

*

E

S

*

E

U

*

E

U

C

D

U

C

D

U

T

RX

T

RX

T

RX

T

RX

C

D

U

C

D

U

T

R

X

T

R

X

T

R

X

T

R

X

C

D

U

C

D

U

TDU

FAN BOX

AIR BOX

P

S

U

P

S

U

P

S

U

P

S

U

P

S

U

P

S

U

P

M

U

T

R

X

T

R

X

T

R

X

T

R

X


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Introduction

RF de)ice in '*S incudes two parts

Indoor& com%iner and spitter unit

For eampe& 1(U modue! S1U modue and E(U modue

Outdoor& antenna! "eeder! **A tower top ampi"ier3! umper and

i-$tnin- arrester


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Function o" 1om%iner and (i)ider

Use one antenna to support mutipe *56R5

si-nas! decreases t$e amount o" antenna and

"eeder

1ompete dupeer o" *56R5 and com%ine *5

si-na "iter! ampi"y and spit t$e R5 si-na

Pro)ide power "or **A


8/55HUAWEI TECHNOLOGIES CO., LTD. Page 8All rights reserved

1(U 1om%inin- and (i)ider Unit3

*/

*2

*71om%

*7(up

com%iner dupeer

di)ider

di)ider

ampi"ier

"iter

R/R2

RR4

R8

R9

R:

R;


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S1U Simpe 1om%iner Unit3

*5/

*52

*5

*54

*5 >1om%

combiner

combiner

combiner


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E(U En$ance (upeer Unit3

*/ dupeer

di)ider

ampi"ier

R/

R2

*6R7A=*/

di)ider

ampi"ier

R/

R2

dupeer *6R7A=*2*2


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1omparison amon- (i""erent 1om%inin- Units

co!ine

ode

t"pica# #o$$%a#&e o'

TX(dB)

pricecopari$on

(per TRX)

1(U

com%ine two*5 si-na

one step d'com%iner

4.8 midde

S1Ucom%ine "our*5 si-natwo step d'

com%iner

9.; ow

S1U?1(U

com%ine "our*5 si-na

two step d'com%iner

; ow

E(U no com%iner dou%e dupe

/ midde

(ou%e 1(U wit$ com%iner3

no com%iner dou%e dupe

/ $i-$

(ou%e 1(Uwit$out com%iner3

com%ine two*5 si-na

dou%e dupe4.8 midde


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=ew *ype 1(U@ES1U

E1(U

*$e structure is t$e same as 1(Us! %ut increase MA5. input

power. It can %ear up to/00B input RF power

ES1U

*$e structure is t$e same as 1(Us! %ut increase MA5. input

power. It can %ear up to/00B input RF power


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Chapter 1Chapter 1 RF Part in BTSRF Part in BTS

Chapter 2Chapter 2 AntennaAntenna

Chapter 3Chapter 3 Feeder and TTAFeeder and TTA


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B$at is AntennaC

Radiate and recei)e radio wa)e !con)ert $i-$ "requency current

to eectroma-netic wa)e w$en transmittin-! and con)ert

eectroma-netic wa)e to $i-$ "requency current w$en recei)in-

B l a h " l a h

b l a h " l a h


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1assi"ication

1assi"y %y wor#in- %and& U


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omni directiondirectiona Antenna

Radiate Pattern


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Outine


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)ertica poariation

Omni antenna

dua poariation

directiona antenna

Poariation

)ertica poariation

directiona antenna


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Function

1on)ert $i-$ "requency current to eectroma-netic wa)e w$en

transmittin-

1on)ert eectroma-netic wa)e to $i-$ "requency current w$en

recei)in-

Antenna can not ampi"y t$e transmission power! ust concentrate

RF power to one direction

$orionta section Dertica section


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Radiate Pattern

Omni antenna

lobe

Direction

antenna lobe


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Radiate pattern


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(ipoe and Isotropic

(ipoe

1*+ ,a%e #en-th

1*+,a%e #en-th

1*2,a%e #en-th

Isotropic

Ideal radiator with same ability on all direction!


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ain

*$e radiation a%iity o" certain antenna o)ertop dipoe or isotropic

Indicates t$e antenna "eature o" eectroma-netic radiation in speci"ic

directions

Unit& d'i6d'd

t$eory source

l#$ antenna

(irection antenna

d'd

d'i

dBi .dBd/201


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Forward to 'ac# Ratio

*$e ratio o" main o%e si-na stren-t$ to %ac# o%e

*$is )aue is wit$in /;G48d'. In ur%an! it is su--ested to use

t$e antenna wit$ $i-$ F6' ratio


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'eam An-e


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(own tite

*o contro co)era-e

*o decrease inter moduation

Reaiation& eectron and mec$anism


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mec$anism

eectron

(own tite


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E""ect o" Eectron (own tite

=o (own tite Eectron (own tite


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E""ect o" Mec$anism (owntite

=o (owntite Eectron (owntite


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E""ect o" di""erent met$ods

/0HE3 /0HM39HE3? 4HM3


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Poariation

*$e direction o" eectro > )ector radiated %y antenna. *$e

)ertica poariation wa)e is )ertica wit$ t$e pane o" -round!

and t$e $orionta poariation wa)es parae wit$ t$e pane o"

-round

Sin-e antenna $as ony one poariation direction.

(ua poaried antenna contains two sin-e > poaried antenna

in one entity. (ua poariation antenna usuay adopts ?486 48

de-ree ort$o-ona poariation.

>


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Poariation

78RTICA9 HORIAONTA9

/ + 5 +


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(ua Poariation

7*H /*5 +4


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Port Isoation

*$e isoation amon- ports s$oud %e more t$an 0 d'. "or muti>portsantenna! Suc$ as dua %and! dua poariation antenna

1W (1W) 1W

1#o-(1W*1W) . 3dB


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=u Fied

It s$a appy nu "ied tec$noo-y w$en ero dept$ is ess t$an

main %eam "or 29d'.


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:ain to #o,er $ide

:ain to &pper $ide

Upper Side ,o%e Suppression


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1oupin- 'etween Antennas

main o%e

8 .. /0λ

/0

Antenna patterns %ecome superimposed i"

distance is too cose

Dertica separation (ecoupin- distance&/ can pro)ide %etter

R5 6*5 decoupin-

Minimum coupin- oss


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Instaation Eampes Recommended decoupin-

*5 > *5& J0d'

*5 > R5& J40d'


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Antenna Instaation

Coupling loss (dB):

,)2;?40o-#63 )ertica instaation3

,)22?20o-d63>/?23>S/?S23 $orionta instaation3

N& wa)e en-t$

& distance at )ertica

(& distance at $orionta

/ 、 2& -ain

S/ 、 S2& Reati)e -ain at ine connected two antenna


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(istri%uted Antenna System

"'*SPower

spitter Powerspitter

Power

spitter

coupin-

coupin-

coupin-

coupin-

Sma

antenna

Sma

antenna

Sma

antenna

Sma

antenna

Sma

antenna

Sma

antenna

Sma

antenna

coupin-

(ua direction

ampi"ier

(ua direction ampi"ier


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Symmetry and Asymmetry =etwor#

*6R

*6R

/.9

0.8/0

/00.8

(ua direction ampi"ier

(ua direction

ampi"ier


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Optica Fi%er (istri%uted Antenna

*$e optica "i%er repeater is mainy adopted in t$e case

o" wide co)era-e and on- distance transmission

signal

#$tical transcei%er # $ t i c a l t r a n s c e i % e r

#$tical transcei%er

# $ t i c a l t r a n s c

e i % e r

transcei%er

transcei%er


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,ea#y 1a%e

1oaia ca%e wit$ per"orated eads

It is mainy adopted "or tunne! metro and wit$ $i-$ cost o"

equipment and instain-

*6R

&atching load

&atching load

'(al direction am$li)ier

'(al direction am$li)ier

Power s$litter


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,ea#y ca%e

1oaia ca%e wit$ per"orated eads

Produce constant "ied>stren-t$ aon- ca%e runs

Bor# at wide>%and

Radiatin- oss %ecome $i-$er wit$ $i-$ "requency

Dery ar-e %endin- radius

Formery o"ten used "or tunne co)era-e

Epensi)e


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Feature o" ,ea#y 1a%e

*ransmission oss per $undred meter

*ypica )aue & /0J40 d' per /00m

1oupe ,oss at / meter distance

*ypica )aue 88 d' at /m3


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1omparison wit$ (istri%uted Antenna

type ea#in- "i%er coaia "i%er optica

desi-n a-iity -ood -ood not -ood

cost $i-$ ow $i-$

1ompeity o"instain-

$i-$ ow ow

oss o"transmission

$i-$ $i-$ ow

power suppy not needed not needed needed

reia%iity $i-$ $i-$ ow

appica%iity metro! tunne$i-$ %uidin-!

commerciaarea

"ar areaco)era-e


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Chapter 1 RF Part in BTSChapter 1 RF Part in BTS

Chapter 2 AntennaChapter 2 Antenna

Chapter 3 Feeder and TTAChapter 3 Feeder and TTA


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*ower *op Ampi"ier

Ampi"y upin# wea# si-na! t$en&

'aance upin# and downin#

1ompensate oss o" "eeder

"im$le* + d($le* + tri$le* +


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*ripe *ower *op Ampi"ier

,ow noise ampi"ier

*5 "iter

%ypass'ias *ee'*S

trip#e; TTA

antenna

(1

,- )ilter ,- )ilter


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(ata 1on"i-uration o" 1(U *urn on power o" **A in 1(U %e"ore instaation

**A switc$ is in rear pane o" 1(U

1on"i-uration aarm t$res$od o" **A current %e"ore instaation

**A current switc$ is in rear pane o" 1(U

1on"i-uration attenuation "actor o" recei)e si-na on conso attenuation "actor o" recei)e si-na

**A -ain "eeder oss

Simpe **A -ain&/4d'! tripe **A -ain&/2d'

(onQ t use **A i" not necessary

For t$e con)enience o" instaation

*o -et %etter i-$tin- >proo" e""ect


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Power Switc$ and 1urrent ,imit

Rear pane o" MB 1(U

**AM **A(

OFF OFF

**AM **A(

/

2

**AM **A(

OFF OFF

/2

**AM& power switc$ o" main **A switc$

**A(& power switc$ o" di)ersity **A

seect current imit**AM **A(


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Power Switc$ and 1urrent ,imit

M A I =

0 / 2

0/2

( I D E R S E

=ote&

MAI=：main **A switc$

(IDERSE ：di)ersity **A switc$

Rear pane o" 1OM (ED 1(U

0/ 2

0/2

0/ 2

0/2


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Feeder

Feeder selection

*ype & /62L、 :6;L、 864L

Seect 864L in t$e case o" "eeder en-t$ is more t$an ;0 m

and ot$erwise seect :6;L in 00M


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In t$is course! we $a)e earned&

1U( structure and oss

S1U structure and oss

Antenna type and "eature

**A

S&ar"S&ar"


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*$an# ou

3. OMF000004 RF Parts and Antenna ISSUE2.0

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Transcript of 3. OMF000004 RF Parts and Antenna ISSUE2.0