Amadivayisi asebenzayo ayaziwa ukuthi anemiphumela engaqondile ohlelweni. Kuthuthukiswe amasu anhlobonhlobo ukuze kuthuthukiswe ukusebenza kwemishini enjalo phakathi nezigaba zokuklama nokusebenza. Kulula ukunganaki leyo divayisi ye-passive ingase futhi yethule imiphumela engaqondile, okuthi, nakuba incane kakhulu, ingaba nomthelela omubi ekusebenzeni kwesistimu uma ingalungiswa.

I-PIM imele "i-passive intermodulation". Imele umkhiqizo we-intermodulation okhiqizwa lapho amasiginali amabili noma ngaphezulu adluliswa ngomshini wokungenzi lutho onezici ezingaqondile. Ukusebenzisana kwezingxenye ezixhunywe ngomshini ngokuvamile kubangela imiphumela engaqondile, evezwa ikakhulukazi lapho kuhlangana khona izinsimbi ezimbili ezihlukene. Izibonelo zifaka phakathi ukuxega kwamakhebula axegayo, izixhumi ezingahlanzekile, ama-duplex angasebenzi kahle, noma izinti ezigugile.

I-passive intermodulation iyinkinga enkulu embonini yezokuxhumana ngamaselula futhi kunzima kakhulu ukuyixazulula. Ezinhlelweni zokuxhumana zamaselula, i-PIM ingabangela ukuphazamiseka, inciphise ukuzwela komamukeli, noma ivimbe ukuxhumana ngokuphelele. Lokhu kuphazamiseka kungathinta iseli elikhiqizayo, kanye nezinye izamukeli eziseduze. Isibonelo, kubhendi ye-LTE 2, ububanzi be-downlink bungu-1930 MHz ukuya ku-1990 MHz kanye nobubanzi be-uplink bungu-1850 MHz ukuya ku-1910 MHz. Uma izithwali ezimbili zokudlulisa ngo-1940 MHz no-1980 MHz, ngokulandelana, zidlulisela amasignali kusukela kusistimu yesiteshi sesisekelo esine-PIM, ukuhlukaniswa kwazo kukhiqiza ingxenye ku-1900 MHz ewela ebhendini eyamukelayo, ethinta umamukeli. Ngaphezu kwalokho, i-intermodulation ku-2020 MHz ingase ithinte ezinye izinhlelo.

Njengoba i-spectrum iya iminyene kakhulu futhi izinhlelo zokwabelana ngezimpondo ziya zivame kakhulu, amathuba okushintshaniswa kwezinkampani ezihlukene ezikhiqiza i-PIM ayanda. Izindlela zendabuko zokugwema i-PIM ngokuhlela imvamisa ziya ngokuya zingenzeki. Ukwengeza kulezi zinselelo ezingenhla, ukwamukelwa kwezikimu ezintsha zokumodula kwedijithali ezifana ne-CDMA/OFDM kusho ukuthi amandla aphezulu ezinhlelo zokuxhumana nawo ayakhula, okwenza inkinga ye-PIM ibe “mbi kakhulu”.

I-PIM iyinkinga evelele futhi ebucayi kubahlinzeki besevisi nabathengisi bemishini. Ukuthola nokuxazulula le nkinga ngangokunokwenzeka kwandisa ukwethembeka kwesistimu futhi kunciphisa izindleko zokusebenza.

Njengomqambi weRF duplexers, i-Jingxin ingakusiza odabeni lwamaduplex e-RF, futhi wenze ngokwezifiso izingxenye ze-passive ngokuya ngesixazululo sakho. Imininingwane eyengeziwe kungaboniswana nathi.