Kev sojntsuam calibration cov khoom siv: ib phau ntawv qhia ntxaws ntxaws los ntawm kev npaj rau kev saib xyuas

Sojntsuam cov khoom siv yog qhov kev sim hluav taws xob hauv hluav taws xob kev sim ua kom zoo, thiab cov khoom siv terahaltz) {2} {{2} S-tsis, thiab cov ntxig burent {}}}} hauv qab yog ib qho phau ntawv qhia kev qhia tau npog txhua yam ntawm kev npaj rau kev txij nkawm .

{{01. To taub lub luag haujlwm ntawm kev sojntsuam calibration cov khoom siv

Sojntsuam cov khoom siv muaj cov qauv precision-engineered (e.

 

Rov qab ua yuam kev yuam kev: Tshwm sim los ntawm impedance mismatches hauv kev npaj, cable, lossis txuas .

Kev Sib Kis: Attenuation lossis theem kev hloov pauv hauv kab teeb liab .

Hu-Qhov Tsis Txaus Siab: Cov Hluav Taws Xob Hluav Taws Xob Ntawm Kev Nqes Ntawm Pretes thiab Cov Qauv lossis Kev Ntsuas Hluav Taws Xob .

 

Los ntsuas cov qauv kev paub no, cov tshuab kuaj (e {}}

2. tso lub hauv paus rau qhov ntsuas hluav taws xob raug

2.1 tswj qhov chaw kuaj

Thiab Vaum: Ua qhov ntsuas hluav taws xob hauv ib qho chaw ruaj khov

Kev huv: Ua haujlwm hauv thaj chaw tsis muaj plua plav . cov lus tsis zoo) ntawm cov lus qhia hluav taws xob tsis zoo thiab ua kom paub ntsuas cov suab nrov.

2.2 Soj ntsuam cov khoom siv

Kev nqis tes: Txheeb xyuas rau lub cev puas (E {. g} {1} {{2} {{1 {{1 {}.

Cables thiab Connectors: Tshawb xyuas Coaxial Cables rau kinks lossis puas; Xyuas kom meej cov txhab yog huv thiab kom raug mated los tiv thaiv cov paib teeb tsis .

Ntsuas cov khoom siv: Txheeb xyuas cov qauv tsis muaj kev puas tsuaj (e {., Tsis muaj leej twg bent ntawm kev thauj khoom) .

2.3 teeb tsa lub kaw lus

Lub Hwj Chim ntawm VNA thiab kuaj cov kab ke tsawg kawg 30 feeb ua ntej calibration cia cov khoom siv kom ncav zog.

Txuas kev sim rau VNes ntawm cables, kom nruj nreem (tab sis tsis dhau-nruj) kev sib txuas los tiv thaiv teeb liab toftage.

3.} Xaiv cov qauv ntsuas hluav taws xob tsim nyog

Kev sojntsuam cov khoom siv txhawb ntau txoj kev, xaiv raws li zaus ntau, hom kev sojntsuam (E., sg), thiab hom geometry:

 

Txojkev	Cov Qauv Tseem Ceeb	Zaus heev	Cov ntawv thov zoo tagnrho
Kaum	Luv luv, qhib, thauj khoom, thru	DC-18 GHz	Kev Coaxial Pretes, Planar Cov Qauv (PCBs)
TRL	Thru, xav txog, kab	10 GHz-110 GHz	Kev ua haujlwm siab, cov qauv uas tsis-coaxial (e . g {}}, WaveTguides, microstrips)
Txhais dlm	Kab, xav txog, phim	1 GHZ-40 GHz	Kev ntsuas hluav taws xob sib npaug, cov txheej txheem asympetric

4.} Cov ncauj lus ncauj lus kom ntxaws

4.1 qauv calibration

Ruaj ntseg cov khoom siv calibration (e {{{} g,}

4.2 Kev Tshaj Tawm Kev Ua Ntej

Siv lub tshuab tsom rau kev ua ntu zus rau cov tswv yim ua ntu zus nrog cov qauv ntawm cov qauv calibration (e {} g}, qhib pads, qhib pads).

Thov lub teeb, cov khoom siv tsis zoo kom ntseeg tau zoo rau cov qauv hluav taws xob tsis muaj kev sib txuas nrog cov kev sib txuas ua kom muaj kev sib txuas lus sib txuas ....

4.3 Kev rau kev ntsuas hluav taws xob ntawm VNA

Tua tawm VNA lub calibration software thiab xaiv cov qauv xaiv (e {{{} g}, solt) {2} {2}

Ua raws li kev txhawb nqa kom ntsuas txhua tus qauv txheem:

Luv: Ib tug theoretically zoo nkauj luv luv (0}} ω) kom tus yam ntxwv xav txog ntawm qhov kev sojntsuam {}}

Qhib: Tus qauv nrog impedance impedance (e {. g}}}}}}, cua sib pauv fringing .

Yam ris: Ib qho 50 ω thauj mus rau calibrate rau lub teeb liab ploj .

Kha: Ib qho kev sib txuas ncaj qha ntawm kev sojntsuam cov khub kom ntsuas cov kev xa khoom seem .

Tus VNA suav cov ntsiab lus yuam kev (e {. kev taug qab, kev sib cais) thiab khaws cia rau kev txhim kho tiag tiag {}}

{{0 {}}} ib txwm ua yuam kev kom tsis txhob

Kev cai ib puag ncig ib puag ncig: Piv txwv nyob rau hauv kev ua pa tsis zoo los yog qhov chaw kub ua rau thermal drift .

Cov Qauv Txhaum Cai lossis Kev Ua Phem: Cov tshuaj paug ua cov kab mob parsitic resistors / capacitors, distorting cov txiaj ntsig .

Kev soj ntsuam ntau dhau heev: Kev ua phem rau cov lus qhia thiab cov qauv ntaub ntawv, ua yuam kev mus tas li .

Tag

Kev siv cov khoom siv hluav taws xob kom raug yog qhov tseem ceeb ntawm cov txheej txheem hluav taws xob hauv hluav taws xob, thiab kev xaiv cov qauv kev ntsuas hluav taws xob muaj tseeb, thiab cov khoom siv hluav taws xob meej rau kev siv hluav taws xob