Rfic Project
-
Upload
srilekha-vallabhaneni -
Category
Documents
-
view
247 -
download
1
Transcript of Rfic Project
-
8/18/2019 Rfic Project
1/28
2.44 GHZ LOW
NOISE AMPLIFIERDESIGN
(LNA)
YASYA VALLABHANENI
DHARIT SURA
-
8/18/2019 Rfic Project
2/28
RFIC BLOCK
• Amplify very weak signals eg!"ap#$re% &y An#enna'• (ey ")mp)nen# pla"e% a# #*e fr)n# en% )f #*e ra%i) re"eiver "ir"$i#• N)ise fr)m #*e s$&se+$en# re"eiver "*ain is re%$"e% &y #*e gain )f LNA
APPLICATIONS: Use% in vari)$s appli"a#i)ns like IS, Ra%i)- .ell$lar/0.SHan%se#s- 10S Re"eivers- .)r%less 0*)nes- 2ireless LANs- 2ireless Da#a-
LNA
subsequent
LNA frontend G
NF NF NF
1−+=
-
8/18/2019 Rfic Project
3/28
OBJECTIVE OF DESIGN
3pera#e )ver 4566 1*7 2ifi
Appli"a#i)ns'
A"*ieve a g))% n)ise perf)rman"e
Have a g))% lineari#y perf)rman"e
.)ns$me minim$m p)wer
-
8/18/2019 Rfic Project
4/28
LNA DESIGN CONSIDERATIONS
N)ise perf)rman"e
0)wer #ransfer
Impe%an"e ma#"*ing
0)wer ")ns$mp#i)n Ban%wi%#*
S#a&ili#y
Lineari#y
-
8/18/2019 Rfic Project
5/28
REQUIRED SPECIFICATIONS OF OUR DESIGN
PARAMETER SPECIFICATIONS UNITS
8re+$en"y 4566 1*7
N)ise 8ig$re 945: %B 1ain ;: %B
S)$r"e/L)a% Impe%an"e := 3*ms
OBJECTIVE: To design an Ind!"o# So#!e Degene#a"ed LNA "o $ee""%e s&e!i'i!a"ions o"(ined 'o# IEEE)*+,--
Te!%no(og. Pa#a$e"e#s: /0*,12 30+,+2405,52 "o60-,56$2
70*,5889V,s2 V"%*0*,*);V26?F9$
-
8/18/2019 Rfic Project
6/28
BASIC SC@EMATIC OF LNA
COMPONENT DESCRIPTION
@Se# #*e res)nan"e fre+$en"y #) 45661*7
@,a#"*es inp$# impe%an"e
@T$ne% )$#p$# in"reases gain an% w)rks as Ban% 0ass 8il#er wi#*
@S)$r"e Impe%an"e
,@Nm)s #ransis#)r wi#* =5$m #e"*n)l)gy
Lg
-
8/18/2019 Rfic Project
7/28
DESIGN EQUATIONS
gs
sm
gs
s g inC
L g
sC L L s Z +++=
1)(
gs s g C L L )(120
+
=ω
Inp$# Impe%an"e ,a#"*ing e+$a#i)ns
in@Rs
s
gs
sm RC
L g =
Effe"#ive Trans")n%$"#an"e
)()(1
)(
2
s g gs sm gs s
m
in s
gsm
s
out eff
L LC s L g C R s
g
Z R
sC g
V
I G
++++
=
+
==22
22
2
)(1
)(4
41
0
sm gs s
m s
sm gs s
m
s
m
in
indevice
L g C R g R
L g C R
g kTR
g kT
N G
N G N NF
++=
+
+=
⋅
⋅+=
≈
ω γ
ω
γ
ω ω
N)ise 8ig$reWLC C ox gs
3
2=
s g
s
L L
L NF
++=
≈
γ
ω ω
41
0
-
8/18/2019 Rfic Project
8/28
Con"d,
)()(1
)(1
)(1
)(1
2
2
2
2*
11
s g gs gs s sm
s g gs
gs s sm s g gs
gs s sm s g gs
sin
sin
L LC sC R L g s
L LC s
C sR L sg L LC s
C sR L sg L LC s
Z Z
Z Z S
++++
++
=
++++
−+++
=
+
−=
)()(1
22
221
s g gs sm gs s
Lm Leff
L LC s L g C R s
R g RGS
++++
==
0)wer #ransfer in %egenera#e "ir"$i#
C$ali#y 8a"#)r
T s s R L ω =
In%$"#)r %esign e+$a#i)ns
-
8/18/2019 Rfic Project
9/28
Con"d
T gsox
V V V L
W C V I ! 2)(
2−==
µ
)/1(
132
0
22
s g s
s
L L L
R L
! +××∝ ω µ
1||2
||||||1
2112
22
11
2
22>
∆+−−=
S S
S S " S
0)wer .)ns$mp#i)n
S#a&ili#y 8a"#)r
?r% 3r%er In#er"ep# 0)in#
-
8/18/2019 Rfic Project
10/28
DISADVANTAGES OF BASIC SC@EMATIC
L)w s#a&ili#y
L)w gain
Self &iasing #ransis#)r *as w)rse inp$# refle"#i)n
S
-
8/18/2019 Rfic Project
11/28
CURRENT MIRROR CIRCUIT TO INCREASE
GAIN
Adan"ages o' sing
!##en" $i##o# • T*e $se )f "$rren#
mirr)rs in &iasing "an
res$l# in s$peri)r
insensi#ivi#y )f "ir"$i#perf)rman"e #)
varia#i)ns in p)wer
s$pply an%
#empera#$re
• Use% as a l)a%
elemen# in #ransis#)r
amplifiers- #*e *ig*
in"remen#al resis#an"e
)f #*e "$rren# mirr)r
res$l#s in *ig* v)l#age
gain a# l)w p)wer
-
8/18/2019 Rfic Project
12/28
SIMULATION RESULTS=NF2KT AND GT?
-
8/18/2019 Rfic Project
13/28
DESIGN OF CASCADE STAGE
Ini"ia( Ci#!i"
Diag#a$
-
8/18/2019 Rfic Project
14/28
SMALL SIGNAL ANALSIS AND B
ESTIMATIONUsing )pen "ir"$i# #ime ")ns#an# me#*)% we f)$n% #*e &an%wi%#* )f #*e "ir"$i#
fr)m #*e small signal e+$ivalen# m)%el
B2@
-
8/18/2019 Rfic Project
15/28
CALCULATION V9S SIMULATED
Pa#a$e"e#s Ca(!(a"ion Si$(a"ion
6FG$m 6==5=:$m
6FG$m :F:$m
5GnH 56:nH
G?Fp8 G:p8
:=)*ms 656nH 654:nH
Pa#a$e"e#s Ca(!(a"ion Si$(a"ion
6FG$m 6==5=:$m
6FG$m :F:$m
5GnH 56:nH
G?Fp8 G:p8
:=)*ms
-
8/18/2019 Rfic Project
16/28
SC@EMATIC VIE IN CADENCE
-
8/18/2019 Rfic Project
17/28
SIMULATION RESULTS
A. Resp)nse
w< w4
BAND2IDTH@w4>w
-
8/18/2019 Rfic Project
18/28
S
-
8/18/2019 Rfic Project
19/28
S443$#p$# Refle"#i)n .)effi"ien#'
-
8/18/2019 Rfic Project
20/28
NfN)ise 8ig$re'
-
8/18/2019 Rfic Project
21/28
(fS#a&ili#y'
-
8/18/2019 Rfic Project
22/28
1TTrans%$"er 1ain'
-
8/18/2019 Rfic Project
23/28
101ain 0)wer'
-
8/18/2019 Rfic Project
24/28
1A1ain Availa&le'
-
8/18/2019 Rfic Project
25/28
I0??r% 3r%er In#er"ep# 0)in#'
-
8/18/2019 Rfic Project
26/28
ADVANTAGES
Hig* S#a&ili#y
Hig* 1ain
.)ns$mes minim$m 0)wer
1))% lineari#y perf)rman"e
-
8/18/2019 Rfic Project
27/28
RESULTS
Pa#a$e"e#s Ta#ge" Si$(a"ed
8re+$en"y 456:1*7 45661*7
N)ise 8ig$re 945:%B G?:5m%B
1ain ;:%B >?5%B
-
8/18/2019 Rfic Project
28/28
FUTURE ORK
2e "an re%$"e #*e applie% V)l#age
T*ere&y re%$"ing #*e p)wer ")ns$mp#i)n
f$r#*er
In"rease 1ain
Use s*)r# "*annel ,)sfe#s
Lay)$# Design an% ")mpare #*e s"*ema#i"
parame#ers