求大神 2.4GHz混频器网格修改！！！急等！！！

446701197

MIXER CIRCUIT
$ x3 E. m+ U$ [! V. A* m! ?1 AM1 6 4 14 0 NMOS L=0.6U W=170U
, G! {3 x' i( M& ^; SM2 7 5 14 0 NMOS L=0.6U W=170U
6 p# F3 `- R9 J; R! P$ M; T4 XM3 6 5 15 0 NMOS L=0.6U W=170U
/ n9 |, Y. e7 }( H4 u- x% v+ H/ _M4 7 4 15 0 NMOS L=0.6U W=170U
3 y8 M1 `. Z% }' x- |/ `! u0 Z; dM5 14 18 13 0 NMOS L=0.6U W=277U
( k) T1 q# S% J) m) c3 ^# FM6 15 19 13 0 NMOS L=0.6U W=277U
# N5 `; j. Y8 k) s9 eM7 13 1 0 0 NMOS L=2U W=400U
R1 8 6 900
R2 8 7 1200
R3 4 11 10K
R4 5 12 10K
+ x1 Z2 w" B; q# Z; q0 T5 P/ k3 l! X& qR5 16 18 10K
R6 17 19 10K
( X/ H# F4 j4 o4 JVDD 8 0 5
  m4 W% a! e" N) W! b9 I+ a! fVref1 1 0 1.2
Vref2 11 0 2.8
Vref3 12 0 2.8
Vref4 16 0 1.8
Vref5 17 0 1.8
  v0 u, l+ `8 pC1 9 4 1n
C2 10 5 1n
C3 2 18 1n
6 f4 h+ f5 i& z% X  xC4 3 19 1n
c5 6 8 100p
" F5 D% H. N1 U5 E. }& bc6 7 8 100p
& C: |9 M& q( k& l/ V- l0 _VLO1 9 0  SIN(0 0.8 50MEG 0 0 0)
0 D& A9 h3 |7 t+ t8 J; xVLO2 10 0  SIN(0 0.8 50MEG 0 0 180)
V1 2 0 SIN(0 30m 50.1MEG 0 0 0)
V2 3 0 SIN(0 30m 50.1MEG 0 0 180)
.MODEL NMOS NMOS(LEVEL=2 LD=0.250U TOX=365E-10
+NSUB=2.13818E+16 VTO=0.84898 KP=5.77900E-05
( O, J5 C" i/ a) z% i2 w; R+GAMMA=0.8905 PHI=0.6 U0=610.8 UEXP=0.244555
4 l" r5 z) s8 w5 ?+UCRIT=128615 DELTA=2.0298 VMAX=92227.9 XJ=0.250U
& H. q0 Y4 ]8 J' T& L3 k. c1 }/ F+LAMBDA=1.956049E-02 NFS=2.307838E+12 NEFF=1
+NSS=1.0E+12 TPG=1.0 RSH=22.730 CGDO=3.54775E-10
+CGSO=3.54775E-10 CGBO=6.354506E-10 CJ=3.7740E-04
+ W  `9 i& Y! ?& V+MJ=0.45890 CJSW=5.1360E-10 MJSW=0.36620 PB=0.800)
0 s) @+ G0 Q0 g' ~+ ]* X.TRAN 0.1u 100u 0 1n
.PROBE
.OP
/ t# }, R, @1 ^* c  ^) G5 ~.END


这个怎么修改成2.4GHz的啊 并仿真出噪声系数 附有电路图   求各位大神帮忙