Video: Smith daim duab siv rau dab tsi?
2024 Tus sau: Edward Hancock | [email protected]. Kawg hloov kho: 2023-12-16 01:32
Cov Smith Chart yog siv los tso saib qhov tseeb (lub cev) kav hlau txais xov impedance thaum ntsuas ntawm Vector Network Analyzer (VNA). Smith Charts yog thawj zaug tsim nyob ib ncig ntawm 1940 los ntawm Phillip Smith raws li cov cuab yeej siv tau los ua kom cov kab sib npaug koom nrog hauv cov kab sib kis tau yooj yim rau kev tswj hwm.
Ntawm no, lub hom phiaj ntawm daim ntawv Smith yog dab tsi?
Pab daws cov teeb meem nrog cov kab sib kis thiab cov kab sib txuas
Ib yam li ntawd, Smith daim ntawv txhais li cas? Cov Smith daim duab , tsim los ntawm Phillip H. Smith (1905–1987), thiab T. Mizuhashi, yog lub tshuab xam zauv graphical lossis nomogram tsim los rau cov kws tshaj lij hluav taws xob thiab hluav taws xob tshwj xeeb hauv xov tooj cua zaus (RF) engineering los pab daws cov teeb meem nrog cov kab sib kis thiab cov kab sib txuas.
Tsis tas li ntawd, cov yam ntxwv ntawm Smith daim ntawv yog dab tsi?
A Smith daim duab yog ib ncig zaj nrog ntau lub voj voog interlaced rau nws; Thaum siv kom raug, kev sib piv impedance nrog cov txheej txheem nyuaj tuaj yeem ua tau yam tsis muaj kev suav. Qhov kev siv zog tsuas yog xav tau yog kev nyeem ntawv thiab ua raws li qhov tseem ceeb ntawm lub voj voog.
Vim li cas thiaj xav tau kev sib tw impedance?
Cov kab sib kis sib phim ( Impedance sib piv ) Nws yog ib qho tseem ceeb heev rau kev hloov xov tooj cua zaus zog los ntawm lub tshuab hluav taws xob mus rau ib qho kev thauj khoom los ntawm cov kab sib txuas nrog xoom lossis tsawg kawg nkaus lub zog poob. Yuav kom ua tiav qhov no, qhov chaw thiab qhov load impedances yuav tsum yog sib phim.
Pom zoo:
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