Umgomo we-vector network analyzer

I-Vector network analyzer inemisebenzi eminingi futhi yaziwa ngokuthi “inkosi yezinsimbi”.Kuyi-multimeter emkhakheni wefrikhwensi yomsakazo kanye ne-microwave, kanye nemishini yokuhlola yamandla kazibuthe kagesi.

Abahlaziyi benethiwekhi bangaphambi kwesikhathi balinganisa ubukhulu kuphela.Laba bahlaziyi benethiwekhi ye-scalar bangakala ukulahlekelwa okubuyayo, inzuzo, isilinganiso samagagasi okuma, futhi benze ezinye izilinganiso ezisuselwe ku-amplitude.Namuhla, abahlaziyi abaningi benethiwekhi bangabahlaziyi benethiwekhi ye-vector, abangakala i-amplitude nesigaba ngesikhathi esisodwa.I-Vector network analyzer iwuhlobo lwensimbi esetshenziswa kakhulu, engabonisa amapharamitha we-S, ifanise i-impedance eyinkimbinkimbi, futhi ikalwe kusizinda sesikhathi.

Amasekhethi e-RF adinga izindlela zokuhlola ezihlukile.Kunzima ukukala i-voltage kanye nezamanje ngokuqondile kumafrikhwensi aphezulu, ngakho-ke lapho ukala amadivaysi amafrikhwensi aphezulu, kufanele abonakale ngokusabela kwawo kumasiginali we-RF.Isihlaziyi senethiwekhi singathumela isignali eyaziwayo kudivayisi, bese sikala isignali yokufaka nesignali yokuphumayo ngesilinganiso esinqunyiwe ukuze sibone ukulinganiswa kwedivayisi.

I-Network analyzer ingasetshenziswa ukuveza amadivaysi efrikhwensi yomsakazo (RF).Nakuba amapharamitha e-S kuphela aye akalwa ekuqaleni, ukuze abe ngaphezu kwedivayisi ngaphansi kokuhlolwa, isihlaziyi senethiwekhi samanje sihlanganiswe kakhulu futhi sithuthuke kakhulu.

Umdwebo webhulokhi yokuhlanganisa we-analyzer yenethiwekhi

Umfanekiso 1 ubonisa umdwebo webhulokhi yokuqamba yangaphakathi ye-analyzer yenethiwekhi.Ukuze uqedele ukuhlolwa kwesici sokudlulisela/sokubonakala kwengxenye ehloliwe, i-analyzer yenethiwekhi ihlanganisa:;

1. Umthombo wesignali evusa amadlingozi;Nikeza isignali yokufaka ejabulisayo yengxenye ehloliwe

2. Idivayisi yokuhlukanisa isignali, okuhlanganisa isihlukanisi samandla nedivayisi yokuhlanganisa inkomba, ikhipha okokufaka namasiginali abonisiwe wengxenye ehloliwe ngokulandelanayo.

3. Umamukeli;Hlola isibonakaliso, ukudlulisa kanye namasignali okokufaka wengxenye ehloliwe.

4. Icubungula iyunithi yokubonisa;Lungiselela futhi ubonise imiphumela yokuhlolwa.

Isici sokudlulisela isilinganiso esihlobene sokuphumayo kwengxenye ehloliwe kuya ku-excitation yokokufaka.Ukuze uqedele lokhu kuhlola, isihlaziyi senethiwekhi sidinga ukuthola isignali yokufaka evusa amadlingozi nolwazi lwesignali yokuphumayo yengxenye ehloliwe ngokulandelanayo.

Umthombo wesignali wangaphakathi wokuhlaziya inethiwekhi unesibopho sokukhiqiza amasiginali ajabulisayo ahlangabezana nemvamisa yokuhlola kanye nezidingo zamandla.Okukhiphayo komthombo wesignali kuhlukaniswe ngamasignali amabili ngesihlukanisi samandla, esisodwa esingena ngokuqondile kusamukeli u-R, kanti enye ifaka embobeni yokuhlola ehambisanayo yengxenye ehloliwe ngokushintsha.Ngakho-ke, ukuhlolwa kwesamukeli sika-R kuthola ulwazi lwesiginali yokufaka elinganiselwe.

Isignali yokuphumayo yengxenye ehloliwe ingena kumamukeli B we-analyzer yenethiwekhi, ngakho umamukeli B angahlola ulwazi lwesiginali yokuphumayo yengxenye ehloliwe.I-B/R iyisici sokudlulisela phambili kwengxenye ehloliwe.Uma ukuhlolwa okuhlanekezelwe kuqedwa, ukushintshwa kwangaphakathi kwesihlaziyi senethiwekhi kuyadingeka ukuze kulawulwe ukugeleza kwesignali.