Pamberi pechiratidzo chepurojekiti yeRF dhizaini, rimwe remazwi anonyanya kuzivikanwa ndeye "dB". Kune RF mainjiniya, dB dzimwe nguva inozivikanwa sezita rayo. dB inhengo yelogarithmic inopa nzira iri nyore yekutaura mareshiyo, sereshiyo pakati pechiratidzo chekuisa uye chiratidzo chinobuda.
Sezvo dB iri reshiyo, inhengo yehukama, kwete mhedziso. Mhepo yechiratidzo inoyerwa zvachose, nekuti isu tinogara tichiti mutsauko ungangoita, ndiko kuti, mutsauko unokwanisa pakati pemapoinzi maviri; Kazhinji isu tinotaura nezvekugona kwenodhi inoenderana ne0 V pasi node. Ikozvino yechiratidzo inoyerwawo zvachose, sezvo iyo unit (ampere) ichibatanidza huwandu hwechaji yenguva yakatarwa. Mukupesana, dB iyuniti inosanganisira logarithm yereshiyo pakati penhamba mbiri. Semuenzaniso, amplifier kuwana: Kana simba rechiratidzo chekuisa iri 1 W uye simba rechiratidzo chekubuda iri 5 W, chiyero ndeye 5, inoshandura ku dB i6.9897dB.
Naizvozvo, iyo amplifier inopa simba rekuwana 7dB, ndiko kuti, chiyero pakati peinobuda simba rechiratidzo uye simba rekuisa chiratidzo rinogona kuratidzwa se7dB.
Sei kushandisa dB?
Izvo zvinogoneka kugadzira uye kuyedza masisitimu eRF pasina kushandisa dB, asi muchokwadi, dB inowanikwa kwese. Imwe bhenefiti ndeyekuti chiyero chedB chinotibvumira kuratidza mareshiyo akakura kwazvo tisingashandise nhamba huru kwazvo: 1,000,000 ine simba rinowanikwa re60dB chete. Pamusoro pezvo, kuwanda kwakazara kana kurasikirwa kwechiratidzo chetani iri mudB domain uye iri nyore kuverenga nekuti manhamba ega ega dB anongowedzerwa (asi kana tikashandisa akajairwa ratios, kuwanda kunodiwa).
Imwe bhenefiti ndiyo yatinoziva kubva muruzivo rwemasefa. RF masisitimu anotenderera pama frequency uye nzira dzakasiyana idzo ma frequency anogadzirwa, anodzorwa, kana kukanganiswa nezvikamu uye parasitic sekiti zvikamu. Chikero chedB chiri nyore mumamiriro ezvinhu akadaro nekuti frequency yekupindura chiitiko inonzwisisika uye inooneka inodzidzisa kana frequency axis ichishandisa logarithmic chiyero uye amplitude axis inoshandisa dB chiyero.
Naizvozvo, mukugadzira sefa, zvinodikanwa kunyatso chenjera.
We can design and produce customized filters for you, any questions you may have please contact us: sales@cdjx-mw.com
Nguva yekutumira: Mar-04-2022
