en:lna
Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| en:lna [2013/07/24 20:47] – [Construction] kaklik | en:lna [Unknown date] (current) – external edit (Unknown date) 127.0.0.1 | ||
|---|---|---|---|
| Line 24: | Line 24: | ||
| {{: | {{: | ||
| - | A coil performing on 144Mhz has 7 turns of 0.5mm wire around a rod with a diameter of 4mm (__a drill__). The coil is ..? | + | A coil performing on 144Mhz has 7 turns of 0.5mm wire around a rod with a diameter of 4mm (__a drill__). The coil is stretched as seen in the picture. The capacitors |
| - | + | ||
| - | Cívka na 144MHz vychází 7závitů z drátu 0,5mm motáno na průměr tyčky 4mm (vrták). Cívka je roztažená tak jek je vidět na fotce C1 a C2 je 8,2pF. Zpětná vazba u LNA není vyhodil jsem ji není tam potřeba, domnívám se že zvyšuje šumové číslo a snižuje zisk asi o 1dB. Trim tam taky nedávám je tam odpor 45 Ohm a celkový proud celým | + | |
| ====== The measured parameters ====== | ====== The measured parameters ====== | ||
| - | {{:cs:prenos.png?200|}} | + | {{:cs:rf:lna01a.png?400|Transmission characteristic of LNA01A preamplifier.}} |
| {{: | {{: | ||
| Line 42: | Line 40: | ||
| ===== Covering ===== | ===== Covering ===== | ||
| - | The module fits into __metallic tin shielding | + | The module fits into metallic |
en/lna.1374698855.txt.gz · Last modified: 2013/07/24 20:47 (external edit)
