Vswr, kubwerera (rl), akuwonetsa mphamvu, komanso mphamvu yoperekedwa

Maubwenzi a pakati pa magetsi oyimilira mafunde a Full Rafio (vswr), kubweza (RL), kuwonetsa mphamvu, ndipo mphamvu zopatsirana zimalumikizidwa. Pansipa pali njira zazikuluzikulu ndi njira zotembenukira:

### * ** ma cures
1.

\ Garam = \ frac {\ mafoni {vswr} - 1} {\ mafoni {vswr} + 1}

2. ** vswr ** kuchokera γ:

\ lemba {vswr} = \ frac {1 + | | | {1 - | | | |

3. ** Kubwezeretsa (RL) ** mu DB:

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

4. ** Kuwonetsa mphamvu (%) **:

P _ {\ lemba}}} = | \ gamma |

5. ** Mphamvu yogawa (%) **:

P _ {\ malembedwe}} = \ kumanzere (1 - | | | |

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# # # ** kutembenuka kwa masitepe **
# # 1 # 1. Kuyambira ndi vswr **:
- kuwerengetsa γ:

\ Garam = \ frac {\ mafoni {vswr} - 1} {\ mafoni {vswr} + 1}

- Gwiritsani ntchito γ kuti mupeze rl, kuwonetsa mphamvu, ndikupatsira mphamvu yogwiritsa ntchito njira pamwambapa.

#### ** 2. Kuyambira ndi kutaya kobweza (RL mu DB) **:
- kuwerengetsa γ:

| ~ Gamma | = 10 ^ {- \ \ \ \} / 20}

- Gwiritsani ntchito γ kuti mupeze vswr, kuwonetsa mphamvu, ndikupatsa mphamvu.

#### * 3* 3. Kuyambira ndi mphamvu zowonetsedwa / zofalikira **:
- chifukwa ** akuwonetsa mphamvu ** (\ (p _ {\ mawu {)} \):

| ~ Gamma | = \ sqrt {\ frac {p _ {\ mawu {}} {100}

- chifukwa ** Mphamvu yogawa ** (\ (p _ {\ malembedwe {trates} \):

| ~ Gamma | = \ sqrt {1 - \ frac {p {\ malembedwe {trates {trans} {ma 100 {100}

- Gwiritsani ntchito γ kuti muwerenge vswr ndi rl.

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# # # ** tebulo lachitsanzo **
| ** vswr ** | ** Kubwezeretsa (DB) ** | ** Kuwonetsa mphamvu (%) ** | ** Mphamvu yogawa (%) ** |
|----------|----------------------|-------------------------|---------------------------|
| 1.0 | ∞ (machesi abwino) | 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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# # # **
- A ** vswr wa 1: 1 ** imatanthawuza kuwonetsera (γ = 0, rl = ∞).
- ** Okwera VSWR ** kapena ** otsika RL ** imawonetsa mphamvu yowoneka bwino.
- ** Mphamvu yogawika ** imakulitsidwa pomwe vswr ≈ 1.

Gwiritsani ntchito njirazi kuti musokoneze pakati pa magawo a zofananira mu RF Systems.