求大神 2.4GHz混频器网格修改！！！急等！！！

446701197

MIXER CIRCUIT
6 w& I9 a  {0 W# g# dM1 6 4 14 0 NMOS L=0.6U W=170U
& H: r' Z& s& ZM2 7 5 14 0 NMOS L=0.6U W=170U
- b- I9 D/ }( s, i! I& QM3 6 5 15 0 NMOS L=0.6U W=170U
; J, T- K' U$ S4 a4 E$ D- WM4 7 4 15 0 NMOS L=0.6U W=170U
M5 14 18 13 0 NMOS L=0.6U W=277U
  h6 o- p  e; ~7 n# i* W2 L' iM6 15 19 13 0 NMOS L=0.6U W=277U
M7 13 1 0 0 NMOS L=2U W=400U
R1 8 6 900
6 Z; |% I: n" X4 `1 e0 n5 j/ n9 k: dR2 8 7 1200
R3 4 11 10K
: ]' z0 z0 I0 w  iR4 5 12 10K
R5 16 18 10K
R6 17 19 10K
VDD 8 0 5
Vref1 1 0 1.2
( a! Q# F( p3 r- j8 e6 Q5 L& [9 FVref2 11 0 2.8
Vref3 12 0 2.8
+ y( O6 u& j; J9 B$ HVref4 16 0 1.8
/ W2 a  L# f! ~6 d6 c: ^Vref5 17 0 1.8
C1 9 4 1n
- d! Z) m: |: }/ y8 U. |/ wC2 10 5 1n
C3 2 18 1n
4 Y: B( Z" j5 VC4 3 19 1n
c5 6 8 100p
9 N) E- ~6 z6 Y9 Y4 bc6 7 8 100p
VLO1 9 0  SIN(0 0.8 50MEG 0 0 0)
VLO2 10 0  SIN(0 0.8 50MEG 0 0 180)
* R( M$ ?/ Z+ n  R) i/ }: Y: b7 KV1 2 0 SIN(0 30m 50.1MEG 0 0 0)
V2 3 0 SIN(0 30m 50.1MEG 0 0 180)
+ I% e2 |1 Z5 |8 P8 U( D* v" r.MODEL NMOS NMOS(LEVEL=2 LD=0.250U TOX=365E-10
0 Y; J6 a2 v8 a/ z# N+NSUB=2.13818E+16 VTO=0.84898 KP=5.77900E-05
+ X& F% g! P" k9 D3 r+GAMMA=0.8905 PHI=0.6 U0=610.8 UEXP=0.244555
+UCRIT=128615 DELTA=2.0298 VMAX=92227.9 XJ=0.250U
+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
5 Z* T  N  T9 i3 n1 N9 h  B: ?+MJ=0.45890 CJSW=5.1360E-10 MJSW=0.36620 PB=0.800)
( o7 g  D9 X  M" f.TRAN 0.1u 100u 0 1n
3 I/ |6 ?7 Z0 @( H.PROBE
.OP
.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