VSWR, telf ta 'ritorn (RL), enerġija riflessa, u qawwa trasmessa

Ir-relazzjonijiet bejn il-proporzjon tal-mewġ wieqaf tal-vultaġġ (VSWR), it-telf tar-ritorn (RL), il-qawwa riflessa, u l-qawwa trasmessa huma interkonnessi permezz tal-koeffiċjent ta 'riflessjoni (γ). Hawn taħt jinsabu l-formuli ewlenin u l-passi għall-konverżjoni:

### ** Formuli tal-qalba **
1. ** Koeffiċjent ta 'riflessjoni (γ) **:

\ Gamma = \ frac {\ text {vswr} - 1} {\ text {vswr} + 1}

2. ** VSWR ** minn γ:

\ text {vswr} = \ frac {1 + | \ gamma |} {1 - | \ gamma |}

3. ** Telf ta 'ritorn (RL) ** f'DB:

\ test {rl (db)} = -20 \ log_ {10} (| \ gamma |)

4. ** Qawwa riflessa (%) **:

P _ {\ text {rifl}} = | \ gamma | ^ 2 \ darbiet 100 \%

5. ** Qawwa Trasmessa (%) **:

P _ {\ text {trans}} = \ xellug (1 - | \ gamma | ^ 2 \ lemin) \ darbiet 100 \%

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### ** passi ta 'konverżjoni **
#### ** 1. Nibdew bil-VSWR **:
- Ikkalkula γ:

\ Gamma = \ frac {\ text {vswr} - 1} {\ text {vswr} + 1}

- Uża γ biex issib RL, qawwa riflessa, u qawwa trasmessa billi tuża l-formuli ta 'hawn fuq.

#### ** 2. Nibdew bit-Telf tar-Ritorn (RL f'DB) **:
- Ikkalkula γ:

| \ Gamma | = 10 ^ {- \ test {rl} / 20}

- Uża γ biex issib VSWR, qawwa riflessa, u qawwa trasmessa.

#### ** 3. Tibda b'qawwa riflessa / trasmessa **:
- għal ** qawwa riflessa ** (\ (p _ {\ text {rifl}} \)):

| \ Gamma | = \ sqrt {\ frac {p _ {\ text {rifl}}} {100}}

- għal ** Qawwa Trasmessa ** (\ (p _ {\ text {trans}} \)):

| \ Gamma | = \ sqrt {1 - \ frac {p _ {\ text {trans}}} {100}}

- Uża γ biex tikkalkula VSWR u RL.

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### ** Eżempju Tabella **
| ** VSWR ** | ** Telf ta 'ritorn (DB) ** | ** Qawwa riflessa (%) ** | ** Qawwa Trasmessa (%) ** |
| ---------- | ---------------------- | -------------------------
| 1.0 | ∞ (taqbila perfetta) | 0% | 100% |
| 1.5 | 14.0 dB | 4% | 96% |
| 2.0 | 9.5 dB | 11.1% | 88.9% |
| 3.0 | 6.0 db | 25% | 75% |

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### ** Noti ewlenin **
- A ** VSWR ta '1: 1 ** tfisser l-ebda riflessjoni (γ = 0, rl = ∞).
- ** VSWR ogħla ** jew ** RL aktar baxx jindika qawwa aktar riflessa.
- ** Qawwa Trasmessa ** hija massimizzata meta VSWR ≈ 1.

Uża dawn il-formuli biex tinterkonverti bejn parametri għal tqabbil ta 'impedenza fis-sistemi RF.