Akụkọ

Gịnị bụ aDuplexer?

Duplexer bụ ngwaọrụ na-enye ohere nkwurịta okwu bi-directional n'otu ọwa. N'ime sistemụ nkwukọrịta redio, ọ na-ekewapụ onye nnata na onye na-ebufe ya ebe ọ na-enye ha ohere ịkekọrịta otu antenna. Ọtụtụ sistemụ ikwugharị redio gụnyere duplexer.

Duplexers kwesịrị:

Emebere ya maka ịrụ ọrụ n'ime eriri ugboro nke nnata na nnyefe na-eji yana ga-enwerịrị ike ijikwa ike mmepụta nke nnyefe.

Weta njụta nke ụda mgbasa ozi zuru oke na-eme na ugboro ugboro, na a ga-emerịrị ya ka ọ rụọ ọrụ na, ma ọ bụ ihe na-erughị, nkewa ugboro ugboro n'etiti nnyefe na nnata.

Weta oke oke iji gbochie enweghị mmetụta nke nnata.

Diplexer vs Duplexer. Kedu ihe dị iche?

Diplexer bụ ngwaọrụ na-agafe agafe na-ejikọta ntinye abụọ n'ime mmepụta nkịtị. Mgbama dị na ntinye 1 na 2 nwere eriri ugboro dị iche iche. N'ihi ya, akara ngosi na ntinye 1 na 2 nwere ike ibikọ ọnụ na mmepụta na-etinyeghị aka na ibe ya. A na-akpọkwa ya dị ka onye na-eme ihe na-ejikọta cross band. Duplexer bụ ngwaọrụ na-agafe agafe nke na-enye ohere nkwurịta okwu bi-directional (duplex) ma nata ugboro ugboro n'ime otu band n'otu ụzọ.

Ụdị nkeDuplexers

Enwere ụdị isi abụọ nke duplexers: Band Pass na Band Reject.

Antenna nkịtị nwere duplexer

Uru doro anya nke iji duplexer bụ na anyị nwere ike ibufe na ịnata naanị otu antenna. N'iji ohere dị na ụlọ elu dị na saịtị ọdụ ụgbọ ala na ego efu, nke a bụ ezigbo uru.

N'ime sistemụ ọwa otu, ebe enwere naanị otu onye na-ebufe na otu nnata, iji duplexer ka ha nwee ike kekọrịta otu antenna nkịtị bụ nhọrọ kwụ ọtọ. Otú ọ dị, mgbe a na-atụle usoro ọtụtụ ọwa nwere ọtụtụ mgbasa ozi na-anata ọwa, ọnọdụ ahụ na-adị mgbagwoju anya.

Enwere ike ịhụ ihe ọghọm dị na iji duplexers na sistemụ multichannel mgbe anyị tụlere intermodulation transmitter. Nke a bụ ngwakọta nke ọtụtụ mgbama nnyefe na antenna.

Antenna Tx na Rx iche

Ọ bụrụ na anyị ejiri nnyefe dị iche iche wee nweta antennas, ọ na-ewekwu ohere na ụlọ elu ahụ.

Nnukwu uru bụ na, n'agbanyeghị intermodulation na-agafe agafe ka na-eme n'otu ụzọ ahụ n'etiti akara ngosi jikọtara ọnụ, ọ dịghịzi ụzọ kpọmkwem maka ngwaahịa ndị a iru.

onye nnata. Kama, mwepu dị n'etiti nnyefe na ịnweta antenna na-enye nchebe ọzọ. Ọ bụrụ na a na-ahazi ndị na-ebugharị na ndị na-anata ya n'ụdị nke jikọrọ ọnụ (ya bụ: otu n'elu ibe ya, n'ozuzu ya na antenna na-anata nke kachasị elu n'elu ụlọ elu), mgbe ahụ a na-enweta ikewapụ ihe karịrị 50dB n'ụzọ dị mfe.

Yabụ na njedebe, maka sistemụ ọwa otu, gaa n'ihu wee jiri duplexer. Mana maka sistemụ ọtụtụ ọwa, ebe antennas dị iche iche ga-efu gị ohere karịa na ụlọ elu ọ bụla, nke a bụ nhọrọ na-agbanwe agbanwe. Ọ na-echebe sistemu gị nke ọma site na nnyonye anya dị ukwuu site na intermodulation na-agafe agafe n'ihi obere obere ma sie ike ikewapụ nzụkọ ma ọ bụ mmejọ mmezi.

UHF DuplexerIhe oru ngo

Ihe mkpali ebe a bụ ịchekwa ntinye nke eriri n'ime ụlọ.

Mgbe e wuru ụlọ m, e ji otu eriri coaxial dobe si n'ụlọ elu ahụ gaa n'ụlọ ezumike, zoro ezo nke ọma na mgbidi oghere. Igwe a na-ebuga ọwa TV DVB site na antenna ụlọ gaa na TV n'ime ụlọ ezumike. Enwekwara m igbe TV USB n'ime ụlọ ezumike nke m ga-achọ ikesa gburugburu ụlọ na amp nkesa na-etinye ya n'ime ụlọ elu maka ịnweta ọnụ ụlọ niile. Ya mere, onye Duplexer na njedebe ọ bụla nke eriri dobe ga-enye ya ohere iburu DVB-TV na coax na Cable-TV n'elu coax n'otu oge, na-enye m họrọ ugboro ole kwesịrị ekwesị maka nkesa Cable-TV.

Multiplexes TV na-amalite na 739MHz wee gbatịa ruo 800MHz. Enwere ike ịhazi nkesa USB-TV site na 471-860 MHz. M ga-esi otú ahụ mejuputa akụkụ dị ala iji buru CableTV elu coax na ~ 488MHz na akụkụ dị elu iji buru DVB-TV ala. Ngalaba ngafe dị ala ga-ebukwa DC ka ikesa amp nkesa n'ime ụlọ elu na koodu ime ime Ime Anwansi azụ azụ igbe Cable-TV.