Homework #3

Introduction to AWR and/or ADS;

Transmission Lines

1. ADS filter optimization

1. Result with L and C finals

1. MWO filter optimization

2. Appropriate line widths for TMLS

Source Impedance (Ohms)

Microstrip

width (mm)

Stripline

width (mm)

CPW

width (mm)

CPW

gap (mm)

TML

calculator 3.81 2.08 2 0.0001

50 1.143 0.63 2 0.08

100 0.3429 0.16 2 1

TXLine 20 3.92 2.03 No solution No solution

50 1.16 0.603 0.078 0.0150 1.16 0.603 0.078 0.01

100 0.327 0.145 0.055 0.05

100 na na 0.872 0.5

100 na na 2.03 1

Linecalc 20 3.91 2.028 105 0.008

50 1.16 0.603 0.0614 0.01

50 na na 0.249 0.02

50 na na 5 110

100 0.325 0.145 0.0097 0.002

100 na na 0.05 0.00895

2. Linecalc in ADS

CPWSUBCPWSub1

Mur=1Er=2.2H=1 mm

CPWSub

SSUBSSub1

T=10 umB=0.762 mmMur=1Er=2.2

SSub

MSUBMSub1

Cond=4.1e7Mur=1Er=2.2H=0.381 mm

MSub

S_ParamSP1

Step=1.0 GHzStop=15.0 GHzStart=1.0 GHz

S-PARAMETERS MLINTL3

L=5.25 mmW=3.912 mmSubst="MSub1"

SLINTL2

L=5.053 mmW=2.028 mmSubst="SSub1"

TermTerm4

Z=50 OhmNum=4

TermTerm3

Z=50 OhmNum=3

TermTerm2

Z=50 OhmNum=2

TermTerm1

Z=50 OhmNum=1

ADS, 20 Ohm design (mstrip, cpw, stripline)

2 4 6 8 10 12 140 16

-15

-10

-5

-20

0

freq, GHz

dB(S

(1,1

))dB

(S(3

,3))

dB(S

(5,5

))

2 4 6 8 10 12 140 16

-3

-2

-1

-4

0

freq, GHz

dB(S

(2,1

))dB

(S(4

,3))

dB(S

(6,5

))

Rough=0 umTanD=0.0002T=10 umCond=4.1e7Mur=1

TanD=0Cond=4.1e7T=10 um

Rough=0 umTanD=0.002T=10 umHu=1.0e+36 umCond=4.1e7

CPWCPW1

L=6.566 mmG=0.008 mmW=105 mmSubst="CPWSub1"

TermTerm6

Z=50 OhmNum=6

TermTerm5

Z=50 OhmNum=5

CPWSUBCPWSub1

T=10 umCond=4.1e7Mur=1Er=2.2H=1 mm

CPWSub

SSUBSSub1

TanD=0Cond=4.1e7T=10 umB=0.762 mmMur=1Er=2.2

SSub

S_ParamSP1

Step=1.0 GHzStop=15.0 GHzStart=1.0 GHz

S-PARAMETERS

SLINTL2

L=5.053 mmW=0.603 mmSubst="SSub1"

MLINTL1

L=5.458 mmW=1.159 mmSubst="MSub1"

TermTerm4

Z=50 OhmNum=4

TermTerm3

Z=50 OhmNum=3

TermTerm2

Z=50 OhmNum=2

TermTerm1

Z=50 OhmNum=1

ADS, 50 Ohm design (mstrip, cpw, stripline)

2 4 6 8 10 12 140 16

-60

-40

-20

-80

0

freq, GHz

dB

(S(1

,1))

dB

(S(3

,3))

dB

(S(5

,5))

2 4 6 8 10 12 140 16

-0.4

-0.3

-0.2

-0.1

-0.5

0.0

freq, GHz

dB

(S(2

,1))

dB

(S(4

,3))

dB

(S(6

,5))

Rough=0 umTanD=0.0002T=10 um

MSUBMSub1

Rough=0 umTanD=0.002T=10 umHu=1.0e+36 umCond=4.1e7Mur=1Er=2.2H=0.381 mm

MSub

CPWCPW1

L=6.310 mmG=0.020 mmW=0.249 mmSubst="CPWSub1"

TermTerm6

Z=50 OhmNum=6

TermTerm5

Z=50 OhmNum=5

CPWSUBCPWSub1

T=10 umCond=4.1e7Mur=1Er=2.2H=1 mm

CPWSub

MSUBMSub1

T=10 umHu=1.0e+36 umCond=4.1e7Mur=1Er=2.2H=0.381 mm

MSub

S_ParamSP1

Step=1.0 GHzStop=15.0 GHzStart=1.0 GHz

S-PARAMETERS

SSUBSSub1

T=10 umB=0.762 mmMur=1Er=2.2

SSub

SLINTL2

L=5.053 mmW=0.145 mmSubst="SSub1"

MLINTL4

L=5.66 mmW=0.325 mmSubst="MSub1"

TermTerm6Term

TermTerm4

Z=50 OhmNum=4

TermTerm3

Z=50 OhmNum=3

TermTerm2

Z=50 OhmNum=2

TermTerm1

Z=50 OhmNum=1

ADS, 100 Ohm design (mstrip, cpw, stripline)

Rough=0 umTanD=0.0002T=10 um

Rough=0 umTanD=0.002T=10 um

TanD=0Cond=4.1e7T=10 um

CPWCPW1

L=6.309 mmG=0.02 mmW=0.0097 mmSubst="CPWSub1"

Term6

Z=50 OhmNum=6

TermTerm5

Z=50 OhmNum=5

2 4 6 8 10 12 140 16

-15

-10

-5

-20

0

freq, GHz

dB

(S(1

,1))

dB

(S(3

,3))

dB

(S(5

,5))

2 4 6 8 10 12 140 16

-2.0

-1.5

-1.0

-0.5

-2.5

0.0

freq, GHz

dB(S

(2,1

))dB

(S(4

,3))

dB(S

(6,5

))

MWO, 20 Ohm design (mstrip, cpw, stripline)

S11S21

MWO, 50 Ohm design (mstrip, cpw, stripline)

MWO, 100 Ohm design (mstrip, cpw, stripline)