Peb tuaj yeem ua li cas thaum rov ua tus kheej excitation?

Dab tsi yog mobile teeb liab repeater tus kheej excitation?

Self-excitation txhais tau hais tias lub teeb liab amplified los ntawm lub repeater nkag mus rau qhov kawg tau txais rau lub thib ob amplification, uas ua rau lub hwj chim amplifier ua hauj lwm nyob rau hauv ib tug saturated lub xeev.Lub repeater tus kheej excitation tsuas yog tshwm nyob rau hauv lub wireless repeater.Vim hais tias cov fiber ntau optical repeater yog txuas nrog lub hauv paus chaw nres tsheb teeb liab ncaj qha, yog li cov fiber ntau optical repeater yuav tsis ua rau nws tus kheej excitation, xav tias fiber ntau optical repeater muaj teeb liab.Tab sis yog tias koj tsis tuaj yeem hu xov tooj lossis hu tsis zoo hauv fiber ntau optical repeater.Nyob rau hauv tas li ntawd, nws yog pom zoo kom mus xyuas lub uplink thiab downlink attenuation thiab repeater hardware.

Self-excitation yog dab tsi:

Piv txwv li, qhov kub thiab txias hloov ua rau qhov kev hloov ntawm amplifier nce, kev sib cais, thiab lub hauv paus chaw nres tsheb tsis;tom qab ntawd, nws yuav ua rau muaj kev nce ntxiv hauv cov tswv yim ntawm lub repeater.Thaum koj debug tus repeater, thov tsis txhob dhau mus nrhiav qhov amplification thiab kho qhov nce ntau heev.Koj yuav tsum tso qee qhov chaw rau nws.Rau cov repeaters nrog cov ntaub ntawv tsis raug, nws yog ib qho nyuaj rau nrhiav tus kheej excitation nyob rau hauv lub rov qab channel ntawm lub repeater.Vim hais tias cov channel pem hauv ntej ntawm tus repeater ib txwm muaj cov teeb liab tawm tswv yim los ntawm lub hauv paus chaw nres tsheb, yog tias tus repeater yog tus kheej zoo siab, lub suab nrov pem hauv ntej yuav dhau mus.Qee cov repeaters pom tias lub amplifier yog overloaded peb zaug.Lawv yuav tua tus repeater tam sim ntawd thiab muab cov ntaub ntawv meej txog qhov ua tsis tiav.Nws yog ib qho yooj yim mus nrhiav.Txawm li cas los xij, lub tswv yim teeb liab ntawm qhov rov qab channel amplifier sib txawv heev.Lub xov tooj ntawm tes transmitter tsis yog ib txwm nyob rau hauv lub xeev kis, thiab qhov kev ncua deb tsis yog ib txwm zoo ib yam.

Qee zaum, nws yuav ua rau rov qab channel amplifier nws tus kheej zoo siab.Lub amplifier rov qab mus rau qhov qub vim qhov poob ntawm cov tswv yim tam sim ntawd.Tus kheej-excitation ntawm rov qab channel amplifier tsis yog tsuas yog ob peb feeb luv thiab tsis xwm yeem.Qee lub sij hawm nws tsis ua rau nws tus kheej zoo siab ib zaug rau ob peb teev, uas yog qhov nyuaj heev los kho qhov txhaum.

Yog hais tias tus repeater raug ntsia, lub xov tooj ntawm tes feem ntau tuaj yeem teb lub xov tooj hauv zos yog tias lub xov tooj ntawm tes sib txuas lus nrog xov tooj hauv zos.Tseem, lub xov tooj hauv zos raug txiav tawm thaum teb lub xov tooj ntawm tes, thiab lub suab tsis zoo.Nws yuav tshwm sim los ntawm tus kheej-excitation ntawm rov qab channel amplifier ntawm lub repeater.

Thaum lub repeater ntsia tsis raug, qhov transceiver kav hlau txais xov cais tsis txaus.Qhov nce ntawm tag nrho cov repeater tseem ceeb heev.Lub teeb liab tso zis yuav raug pub rov qab rau cov tswv yim tom qab ncua, ua rau muaj kev cuam tshuam loj heev ntawm lub teeb liab rov qab tso tawm thiab nws tus kheej excitation.Qhov zaus spectrum ntawm lub teeb liab nws tus kheej excitation yuav tshwm sim.Tom qab nws tus kheej excitation, qhov zoo ntawm lub teeb liab nthwv dej yuav ua phem heev, uas cuam tshuam rau kev hu xov tooj zoo thiab ua rau hu xov tooj poob.

Muaj ob txoj hauv kev los kov yeej qhov tshwm sim ntawm tus kheej excitation.Ib qho yog txhawm rau ua kom muaj kev sib cais ntawm tus neeg pub kav hlau txais xov thiab lub kav hlau txais xov rov qab, thiab lwm qhov yog txo qhov nce ntawm qhov rov ua dua.Thaum qhov kev pab them nqi rov qab yuav tsum yog me me, qhov nce tuaj yeem txo.Thaum tus repeater yuav tsum tau npog thaj tsam loj, qhov kev sib cais yuav tsum tau nce ntxiv.

- Ua kom cov kab rov tav thiab ntsug nrug ntawm cov kav hlau txais xov

- Ntxiv kev thaiv, xws li txhim kho cov ntaub thaiv npog, thiab lwm yam

- Ua kom muaj kev ncaj ncees ntawm cov kav hlau txais xov pub dawb, xws li siv lub kav hlau txais xov parabolic

- Xaiv lub kav hlau txais xov rov qab nrog cov kev taw qhia muaj zog, xws li lub kaum sab xis ntawm lub kav hlau txais xov

- Kho lub kaum sab xis thiab kev taw qhia ntawm tus neeg pub dawb thiab cov kav hlau txais xov rov qab kom lawv nyob deb ntawm ib leeg li sai tau.