Ngabe uyazi ngempela ngezikena zedijithali?

Njengokubukeka komgwaqo okujwayelekile, isithwebuli sedijithali sibonisa ngempela imvelo engenantambo yendawo yokuhlola. Isetshenziswa ku-CW (okuqhubekayo kwe-wave) Ukuhlolwa kwesiginali, ukuhlolwa komgwaqo wenethiwekhi, nokuhlolwa komgwaqo wenethiwekhi, kanye nokusebenza kahle kwenethiwekhi kwenzelwe amasistimu wokusabalalisa amakamelo.

Ake sibheke amapharamitha ajwayelekile kanye nemigomo yesikhathi nokuhlukaniswa kwesithwebuli sedijithali ukuze kuphazamise uphenyo.

Amapharamitha abalulekile wesithwebuli sedijithali afaka izilungiselelo ze-attenuator yangaphakathi, ama-RBW (Resolution bandwidth) izilungiselelo, izilungiselelo ze-band band band, njll.

Isimiso sokuhlelwa kwe-Attenuator yangaphakathi kwe-RF yile:

.

.

 

Imigomo yokusetha i-RBW yile:

. Kepha uma kungenzeka ukuthi inani le-RBW liphansi kakhulu, isikhathi esikhulayo sizoba isikhathi eside kakhulu futhi amandla okuhlola azothinteka;

.

Isilinganiso se-Frequency Band Securset Isimiso ngukuthi:

. Kungcono ukuxhuma isihlungi se-Frequency band esihambisanayo lapho ukhukhuleka imvamisa. Isibonelo, uphenyo lwe-F-band scrambling lusethwe ku-1880-1900mhhz. Lapho ukhukhuleka imvamisa, noma yiliphi itheku le-antenna linganqanyulwa eRRU, elixhuma isihlungi, kanye nokuxhuma imbobo yokuphuma yokuhlunga ngesithwebuli semvamisa;

. Isibonelo, lapho uphenya ukuphazanyiswa kwe-F-band, ungabeka i-Sweep Frequency Band Scale 1805MHZ-1920MHZ, bese uphenya ngo-1805-1920mhh ngokwahlukana ngokwahlukana. Ngokusho kwesiginali kanye nokuqina kwe-1830mhz, 1830-1850mhz, 1850-1880mhz, no-1850-18-1880MHHZ, kanye no-1900-1920MHZ, kanye no-1900-1920MHZ, kanye no-1900-1920MHZ, kanye namandla wesiginali we-DCS ngokuya nge-DCS ekhuthazayo futhi egcwele;

 

Ukuhlanganisa izimo zokuphazanyiswa kwe-Bhenge kanye nokuphazanyiswa kwe-Out-of-band of apper and aphansi eziseduze kakhulu ezisekelweni ezimbili ezingenhla, kungenzeka ukuhlaziya izinsimbi zokuphazamiseka ezahlukahlukene endaweni lapho ukungqubuzana okuningi kwezenhlaka lapho kuhlangana khona okuningi.


Isikhathi sePosi: Feb-06-2021
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Imikhiqizo efakiwe, Indawo lapho ittamap, Imitha yamandla kagesi aphezulu, Imitha ye-voltage ephezulu, Ithuluzi elibonisa ama-voltage okufaka, Imitha yamandla kagesi aphezulu edijithali, Imitha ephezulu yedijithali yedijithali, Imitha ye-Voltage, Yonke Imikhiqizo

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