Izixhobo ezisebenzayo ziyaziwa ukuba zineempembelelo ezingabonakaliyo kwisistim. Iindlela ezahlukeneyo zobugcisa ziye zaphuhliswa ukuphucula ukusebenza kwezixhobo ezinjalo ngexesha loyilo kunye nezigaba zokusebenza. Kulula ukungasihoyi eso sixhobo sokwenziwa sinokuzisa iziphumo ezingezizo ezinokuthi, ngelixa ngamanye amaxesha zincinci, zinokuchaphazela kakhulu ukusebenza kwenkqubo ukuba ayilungiswanga.

I-PIM imele "passive intermodulation". Imele imveliso ye-intermodulation eveliswayo xa imiqondiso emibini okanye ngaphezulu ihanjiswa ngesixhobo sokwenziwa esineempawu ezingaqhelekanga. Ukusebenzisana kwamalungu aqhagamshelwe ngoomatshini ngokubanzi kubangela iziphumo ezingaqhelekanga, ezichazwe ngokukodwa ekudibaneni kweentsimbi ezimbini ezahlukeneyo. Imizekelo ibandakanya ukuqhagamshelwa kweentambo, iziqhagamshelo ezingacocekanga, ii-duplexer ezingasebenzi kakuhle, okanye i-eriyali ezigugayo.

I-Passive intermodulation yingxaki enkulu kwishishini lonxibelelwano lweselula kwaye kunzima kakhulu ukuyisombulula. Kwiinkqubo zonxibelelwano lweselula, i-PIM inokubangela ukuphazamiseka, ukunciphisa uvakalelo lomamkeli, okanye ide ivale unxibelelwano ngokupheleleyo. Oku kuphazamiseka kunokuchaphazela iseli eyivelisayo, kunye nabanye abamkeli abakufutshane. Ngokomzekelo, kwi-LTE band 2, uluhlu lwe-downlink luyi-1930 MHz ukuya kwi-1990 MHz kunye noluhlu lwe-uplink yi-1850 MHz ukuya kwi-1910 MHz. Ukuba ababini bahambisa abathwali kwi-1940 MHz kunye ne-1980 MHz, ngokulandelanayo, ukuhambisa izibonakaliso ukusuka kwinkqubo yesikhululo sesiseko kunye ne-PIM, i-intermodulation yabo ivelisa icandelo kwi-1900 MHz ewela kwibhendi yokufumana, echaphazela ummkeli. Ukongeza, i-intermodulation kwi-2020 MHz inokuchaphazela ezinye iinkqubo.

Njengoko i-spectrum isiya ixinana ngakumbi kwaye izikimu zokwabelana nge-eriyali zixhaphake kakhulu, ukubakho kokudityaniswa kweendlela ezahlukeneyo zokuphatha ezivelisa i-PIM ukwanda. Iindlela zesiNtu zokuthintela i-PIM ngocwangciso lwamaza obuninzi ziya zisiba nokwenzeka. Ukongeza kule mingeni ingentla, ukwamkelwa kweenkqubo ezintsha zokumodareyitha kwedijithali ezifana ne-CDMA/OFDM kuthetha ukuba amandla aphezulu eenkqubo zonxibelelwano nawo ayanda, nto leyo eyenza ukuba ingxaki yePIM ibe “mbi”.

I-PIM yingxaki ebalaseleyo nemandundu kubanikezeli benkonzo kunye nabathengisi bezixhobo. Ukukhangela kunye nokusombulula le ngxaki kangangoko kunokwenzeka kwandisa ukuthembeka kwenkqubo kunye nokunciphisa iindleko zokusebenza.

Njengomyili weRF duplexers, I-Jingxin inokukunceda kumba wee-duplexers ze-RF, kwaye wenze ngokwezifiso amalungu angenziyo ngokwesisombululo sakho. Iinkcukacha ezithe kratya zinokuboniswa nathi.