These are some small BASIC programs I wrote for solving some common microwave engineering problems with the TI-84 Plus.
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29 lines
527 B

Disp "ENTER Z0"
Prompt Z
Disp "ENTER FREQ."
Prompt F
Disp "ENTER PCB"
Disp "THICKNESS"
Disp "IN M"
Prompt D
Disp "ENTER"
Disp "PERMITTIVITY"
Prompt E
Disp "ENTER"
Disp "PHASE"
Disp "IN DEG"
Prompt P
(Z/60)*[root]^2E+1)/2+((E-1)/(E+1))*(0.23+0.11/E)->A
(377*[pi])/(2*Z*[root]^2E))->B
(8*e^A)/(e^(2*A)-2)->W
If (W>2)
Then
(2/[pi])*(B-1-ln(2*B-1)+((E-1)/(2*E))*(ln(B-1)+0.39-0.61/E))->W
End
W*D->W
Disp "WIDTH",W
Pause
(E+1)/2+((E-1)/2)*(1/[root]^21+12*D*(1/W))->R
((3*10^8)/([root]^2R)*F))*(P/360)->L
Disp "LENGTH"
Disp "IN M",L