RF thiab microwave keyboards tuaj yeem xa cov teeb liab tau zoo hauv txoj kev sib kis.Cov kev ua haujlwm ntawm cov keyboards no tuaj yeem ua tus yam ntxwv ntawm plaub qhov hluav taws xob tsis zoo.Txawm hais tias ob peb yam tsis muaj feem cuam tshuam nrog kev ua haujlwm ntawm RF thiab microwave keyboards, plaub qhov kev ntsuas hauv qab no tau suav tias yog qhov tseem ceeb vim tias lawv muaj kev sib raug zoo:
Muab cais nyob ib leeg
Kev rho tawm yog qhov attenuation ntawm cov tswv yim thiab cov zis ntawm lub voj voog.Nws yog ib qho kev ntsuas ntawm qhov kev txiav tawm ntawm qhov hloov pauv.
Insertion poob
Insertion poob (tseem hu ua kis tsis tau) yog tag nrho lub zog poob thaum lub hloov pauv nyob rau hauv lub xeev.Insertion poob yog qhov tseem ceeb tshaj plaws rau cov neeg tsim qauv vim tias nws tuaj yeem ua ncaj qha rau qhov nce ntawm lub suab nrov ntawm lub cev.
Hloov sijhawm
Lub sijhawm hloov pauv yog hais txog lub sijhawm xav tau rau kev hloov ntawm "on" xeev mus rau "tawm" xeev thiab los ntawm "off" xeev mus rau "on" xeev.Lub sijhawm no tuaj yeem ncav cuag microseconds ntawm lub zog hloov pauv siab thiab nanoseconds ntawm lub zog qis siab hloov pauv.Qhov feem ntau txhais ntawm kev hloov lub sij hawm yog lub sij hawm yuav tsum tau los ntawm lub input tswj voltage mus txog 50% mus rau qhov kawg RF tso zis zog mus txog 90%.
Fais fab kev muaj peev xwm
Tsis tas li ntawd, lub zog tuav lub peev xwm txhais tau tias yog qhov siab tshaj plaws RF input zog uas qhov hloov pauv tuaj yeem tiv taus yam tsis muaj hluav taws xob mus tas li.
Solid state RF hloov
Cov khoom hauv lub xeev RF tuaj yeem muab faib ua hom tsis muaj kev cuam tshuam thiab hom kev xav.Qhov kev hloov pauv uas tsis yog kev xav tau nruab nrog 50 ohm lub davhlau ya nyob twg cuam tshuam rau ntawm txhua qhov chaw tso zis kom ua tiav qhov tsis tshua muaj hluav taws xob sawv yoj piv (VSWR) hauv ob lub xeev thiab tawm.Lub davhlau ya nyob twg resistor teem rau ntawm qhov chaw nres nkoj tso zis tuaj yeem nqus tau qhov teeb meem teeb liab lub zog, thaum qhov chaw nres nkoj tsis muaj qhov sib txuam nrog cov resistor yuav cuam tshuam cov teeb liab.Thaum lub teeb liab tawm tswv yim yuav tsum tau nthuav tawm hauv qhov hloov pauv, qhov chaw nres nkoj qhib saum toj no raug txiav tawm ntawm lub davhlau ya nyob twg cuam tshuam nrog resistor, yog li tso cai rau lub zog ntawm lub teeb liab kom tag nrho propagated los ntawm qhov hloov.Qhov hloov pauv haum haum rau cov ntawv thov uas qhov ncha xav txog ntawm RF qhov yuav tsum tau txo qis.
Nyob rau hauv sib piv, reflective keyboards tsis tau nruab nrog lub davhlau ya nyob twg resistors kom txo tau qhov nkag poob ntawm qhib ports.Reflective keyboards yog tsim rau cov ntawv thov uas tsis hnov tsw rau siab voltage sawv yoj piv rau sab nraum qhov chaw nres nkoj.Tsis tas li ntawd, nyob rau hauv qhov kev hloov pauv, impedance txuam yog pom tau los ntawm lwm yam khoom ntawm qhov chaw nres nkoj.
Lwm qhov tseem ceeb ntawm cov khoom siv hluav taws xob hauv xeev yog lawv cov tsav tsheb.Qee hom kev hloov hluav taws xob hauv lub xeev tau koom ua ke nrog cov khoom siv hluav taws xob tswj hluav taws xob.Cov tswv yim tswj voltage logic xeev ntawm cov tsav tsheb no tuaj yeem ua tiav cov haujlwm tshwj xeeb - muab qhov tsim nyog tam sim no los xyuas kom meej tias lub diode tuaj yeem tau rov qab los yog xa mus rau qhov tsis ncaj ncees lawm.
Electromechanical thiab solid-state RF keyboards tuaj yeem ua rau ntau yam khoom nrog cov khoom ntim sib txawv thiab cov khoom sib txuas - feem ntau cov khoom siv coaxial hloov nrog kev khiav hauj lwm zaus txog 26GHz siv SMA connectors;Mus txog 40GHz, 2.92mm lossis K-hom connector yuav tsum tau siv;Mus txog 50GHz, siv 2.4mm connector;Mus txog 65GHz siv 1.85mm connectors.
Peb muaj ib hom53GHz LOAD SP6T Coaxial Hloov:
Hom:
53GHzLOAD SP6T coaxial hloov
Ua hauj lwm zaus: DC-53GHz
RF connector: Poj niam 1.85mm
Kev ua tau zoo:
Kev sib cais siab: loj dua 80 dB ntawm 18GHz, loj dua 70dB ntawm 40GHz, loj dua 60dB ntawm 53GHz;
Tsawg VSWR: tsawg dua 1.3 ntawm 18GHz, tsawg dua 1.9 ntawm 40GHz, tsawg dua 2.00 ntawm 53GHz;
Tsawg Ins.less: tsawg dua 0.4dB ntawm 18GHz, tsawg dua 0.9dB ntawm 40GHz, tsawg dua 1.1dB ntawm 53GHz.
Txais tos hu rau pab neeg muag khoom kom paub meej!
Post lub sij hawm: Dec-28-2022