CASIO
PROGRAM SHEET
Program for Minimum loss matching
No.
4
Description
Calculate Ri and R2 which match Z0 and h with loss minimized. (Z0>Zi)
Ri
O-nWA-T— O
Zo—► > ^—‘
o
------------
» o
1. Z,
r2=
z,
IS.1 — ¿.o i —
---
'\ Zo
y Zo
Minimum loss Lmin = 20 log ( /— + -
z, >/ z,
1^ [dB]
Example
Calculate the values of Ri, R2 and Lmi„ for Zo = 500i2 and Zi
= 200fl.
Preparation and operation
•Store the program written on the next page.
• Execute the program as shown below in the RUN mode (® {T |).
Step Key operation Display
Step Key operation
Display
1
fPröilOİröj
Z0 = ? 11
2 5 0 0 ® Z1 = ?
12
3
2 0 0 ® R1
= 13
4 ® 3 8 7.2 9 8 3 3 4 6
14
5 ®
R2 =
15
6
®
25 8 .19 8 8 8 9 7
16
7
®
LMIN=
17
8
® 8 .96 1 3 9 3 3 2 8
18
9 19
10 20
- 1 4 6 -