+- HP Forums (https://www.hpmuseum.org/forum)
+-- Forum: HP Software Libraries (/forum-10.html)
+--- Forum: General Software Library (/forum-13.html)
+--- Thread: (42) T3dB - Reflector antenna 3dB beamwidth (/thread-19114.html)
(42) T3dB - Reflector antenna 3dB beamwidth - Emilio Abud Filho - 11-10-2022 09:03 PM
Dear All
4th order approximation equation for solving the reflector antenna 3dB beamwidth, based on the antenna diameter, antenna efficiency and operating frequency; to be used with "HP Solver" built-in application.
Attachments:
- Program documentation, including example, math equations, how to use explanations, source code, etc; (pdf)
- RAW format file (zip)
Code:
00 { 147-Byte Prgm }
01 LBL "T3dB"
02 MVAR "FREQ"
03 MVAR "DIAM"
04 MVAR "N%"
05 MVAR "TETA3dB"
06 RCL "N%"
07 100
08 ÷
09 STO "NN"
10 CLST
11 RCL "NN"
12 4
13 Y↑X
14 15.512
15 ×
16 RCL "NN"
17 3
18 Y↑X
19 110.36
20 ×
21 -
22 RCL "NN"
23 X↑2
24 202.43
25 ×
26 +
27 RCL "NN"
28 170.1
29 ×
30 -
31 91.742
32 +
33 299792400
34 RCL÷ "FREQ"
35 ×
36 RCL÷ "DIAM"
37 2
38 ×
39 RCL- "TETA3dB"
40 ENDWarm regards,