Qhov sib txawv tseem ceeb ntawm Bandwidth thiab Spectrum yog qhov bandwidth yog qhov siab tshaj plaws ntawm cov ntaub ntawv xa mus nyob rau lub sijhawm qee lub sijhawm thaum lub spectrum yog ib qho kev sau ntawm nthwv dej nrog cov zaus tshwj xeeb hauv kev txiav txim.
Bandwidth thiab spectrum yog ob nqe lus uas muaj nyob rau hauv kev lag luam hluav taws xob, Kev sib txuas lus, thiab kev sib txuas lus.
Bandwidth yog dab tsi?
Bandwidth yog hais txog cov ntaub ntawv ntau tshaj plaws uas qhov nruab nrab tuaj yeem xa tawm hauv ib lub sijhawm. Nws tuaj yeem xa cov ntaub ntawv ntau ntxiv yog tias bandwidth siab. Thiab lwm txoj hauv kev los piav qhia bandwidth yog raws li qhov ntau ntawm cov teeb liab ntawm qhov siab dua (siab tshaj) thiab qis dua (tsawg kawg) zaus uas lub teeb liab tuaj yeem muaj.
Frequency (f) yog tus naj npawb ntawm oscillations uas tshwm sim hauv lub teeb liab ib ob. Kev ntsuas zaus yog Hertz (Hz). Lub sijhawm yog lub sijhawm ua kom tiav qhov oscillation (T=1 / f). Thaum qhov siab tshaj plaws yog f (max) thiab qhov tsawg zaus yog f (min), tus qauv los xam cov bandwidth yog raws li nram no. Ntawm no, B qhia txog bandwidth.
B=[f(max) – f(min)] bits/sec
Spectrum yog dab tsi?
Ib qho spectrum yog Electromagnetic Spectrum. Nws muaj tag nrho cov Electro-Magnetic (EM) nthwv dej. Yog li ntawd, qhov kev vibration ntawm lub teb hluav taws xob thiab ib qho chaw sib nqus tuaj yeem tsim hluav taws xob nthwv dej lossis EM yoj. Tsis tas li ntawd, Electromagnetic spectrum yog qhov sib sau ntawm txhua qhov hluav taws xob hluav taws xob tom qab npaj lawv raws li lub wavelength lossis zaus.
Daim duab 01: Electromagnetic Spectrum
Cov khoom siv hluav taws xob muaj ntau nthwv dej xws li xov tooj cua tsis muaj zog, microwaves, rays infrared, pom lub teeb, Ultra Violet rays, X rays, Gamma rays, thiab lwm yam. TV thiab FM xov tooj cua siv xov tooj cua nthwv dej. Lub gamma-ray muaj qhov qis dua wavelength thiab ntau zaus. Kev sib txuas lus satellite siv microwaves. Cov khoom siv xws li cov chaw taws teeb tswj siv hluav taws xob infrared. Ultra Violet rays pab rhuav tshem cov kab mob thiab kab mob thiab lwm yam. X rays pab txhawm rau txheeb xyuas cov pob txha tawg thiab Gamma rays pab kho mob qog noj ntshav.
Qhov txawv ntawm Bandwidth thiab Spectrum yog dab tsi?
Bandwidth vs Spectrum |
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| Bandwidth yog qhov siab tshaj plaws ntawm cov ntaub ntawv hloov pauv hauv ib lub sijhawm. | A spectrum yog ib qho kev sau ntawm nthwv dej nrog cov zaus tshwj xeeb uas tau teem tseg. |
| Pab ntsuas tus nqi ntawm cov ntaub ntawv uas qhov nruab nrab tuaj yeem xa mus rau ib lub sijhawm. | Nyob hauv electromagnetism, nws pab txheeb xyuas lub wavelengths thiab frequencies ntawm electromagnetic waves. |
| Unit | |
| bits/sec | Tsis muaj unit |
Summary – Bandwidth vs Spectrum
Bandwidth thiab Spectrum yog cov ntsiab lus hauv kev qhuab qhia xws li Kev Sib Txuas Lus, Kev Sib Tham thiab lwm yam. Qhov txawv ntawm Bandwidth thiab Spectrum yog Bandwidth yog qhov siab tshaj plaws ntawm cov ntaub ntawv hloov mus rau hauv ib lub sijhawm thaum lub spectrum yog ib phau ntawm nthwv dej. nrog cov zaus tshwj xeeb tau teem caij.
