Do It Yourself
Accessories
2.4GHz 4 to 1 Power Splitter.
This is a 4 to 1 power splitter work at 2.4GHz. I will use it for stack 4 pieces of 2.4GHz helical antenna for get 6 dB more gain on AO-40 satellite down link receive.
¡@
 |
| PCB |
¡@
 |
 |
| Top view | Bottom view |
¡@
 |
 |
| Device under test | Path insertion loss |
¡@
 |
 |
| Input impedance | Output impedance |
 |
 |
| Input SWR | Output SWR |
¡@
Specifications and Details :
| a) | Input & Output Terminal | : | SMA |
| b) | Input & Output Impedance | : | 50 ohms each |
| c) | Operating Frequency | : | 2401MHz to 2481MHz |
¡@
Measuring Result :
| fo = 2401MHz | fo = 2441MHz | fo = 2481MHz | ||||
| Z (ohms) | SWR | Z (ohms) | SWR | Z (ohms) | SWR | |
| Input 1 | 52.64 - j 7.9 | 1.17 | 52.60 - j 6.6 | 1.15 | 53.00 - j 5.7 | 1.13 |
| Output 1 | 52.53 + j 7.6 | 1.16 | 52.67 + j 6.4 | 1.14 | 53.00 + j 5.5 | 1.13 |
| Output 2 | 55.10 + j 3.3 | 1.12 | 55.35 + j 3.3 | 1.12 | 55.54 + j 3.5 | 1.13 |
| Output 3 | 55.49 + j 4.6 | 1.14 | 56.18 + j 4.0 | 1.15 | 56.39 + j 4.2 | 1.15 |
| Output 4 | 56.45 + j 4.5 | 1.16 | 56.30 + j 4.0 | 1.15 | 56.40 + j 3.5 | 1.15 |
¡@
| fo = 2401MHz | fo = 2441MHz | fo = 2481MHz | ||||
| Path loss | Insertion loss | Path loss | Insertion loss | Path loss | Insertion loss | |
| Input 1 to Output 1 | 7.07dB | 1.07dB | 7.04dB | 1.04dB | 7.04dB | 1.04dB |
| Input 1 to Output 2 | 6.92dB | 0.92dB | 6.90dB | 0.90dB | 6.89dB | 0.89dB |
| Input 1 to Output 3 | 6.95dB | 0.95dB | 6.93dB | 0.93dB | 6.95dB | 0.95dB |
| Input 1 to Output 4 | 6.94dB | 0.94dB | 6.96dB | 0.96dB | 6.95dB | 0.95dB |
¡@
Schematic Diagram in PDF
format
Component Side PCB Layout in
PDF format
Solder Side PCB Layout in
PDF format
Remark : There are two layout in this PCB. The left hand is direct connection. The right hand side is include 2.4GHz dielectric filter.