Isi mmalite mgbaàmà nwere ike ịnye akara ule ziri ezi na nke kwụsiri ike maka ngwa dị iche iche na ngwa ule sistemụ. Onye na-emepụta mgbama na-agbakwụnye ọrụ mgbanwe ziri ezi, nke nwere ike inye aka mee ka mgbama sistemụ ma mee ule arụmọrụ nke nnata. Enwere ike iji ma akara vector na isi iyi mgbama RF dị ka isi mmalite mgbama ule. N'okpuru ebe anyị nwere njirimara nke ha n'okpuru nyocha.

Isi mmalite mgbaàmà nwere ike ịnye akara ule ziri ezi na nke kwụsiri ike maka ngwa dị iche iche na ngwa ule sistemụ. Onye na-emepụta mgbama na-agbakwụnye ọrụ mgbanwe ziri ezi, nke nwere ike inye aka mee ka mgbama sistemụ ma mee ule arụmọrụ nke nnata. Enwere ike iji ma akara vector na isi iyi mgbama RF dị ka isi mmalite mgbama ule. N'okpuru ebe anyị nwere njirimara nke ha n'okpuru nyocha.
Kedu ihe dị iche n'etiti mgbama vector na isi iyi mgbama RF?
1. Okwu Mmalite nke Vector Signal Source
Onye na-emepụta ihe mgbaàmà vector pụtara na 1980s, wee jiri usoro mgbanwe mgbanwe nke etiti ugboro ugboro yana usoro ntụgharị ugboro ugboro redio wee mepụta mgbama modulation vector. Ụkpụrụ bụ iji nkeji njikọ ugboro iji mepụta mgbama oscillator mpaghara microwave na-agbanwe na-aga n'ihu na mgbama oge etiti etiti. Mgbama oge etiti na mgbama baseband na-abanye n'ime vector modulator iji mepụta mgbama n'etiti oge vector mebere ya na oge ihe eji ebu (oku na-ebu bu bụ ugboro nke mgbama nrụtụ aka). mgbaàmà. Mgbama ugboro redio nwere otu ozi baseband dị ka mgbama modulation vector nke etiti. A na-emezi akara ngosi RF ahụ-conditioned ma megharịa ya site na nkeji nrụnye mgbaama, wee ziga ya n'ọdụ ụgbọ mmiri mmepụta maka mmepụta.

Ngụkọta nkeji nke ntanye mgbama vector, nkeji nkeji mgbama, sistemu mgbama analọgụ na akụkụ ndị ọzọ bụ otu ihe na-emepụta mgbama nkịtị. Ọdịiche dị n'etiti ihe na-emepụta ihe mgbaàmà vector na onye na-emepụta mgbama nkịtị bụ akụkụ nke vector modulation na ngalaba ọgbọ mgbama baseband.

Dịka modulation analọgụ, mgbanwe dijitalụ nwekwara ụzọ atọ bụ isi, ya bụ njupụta modulation, modulation nke oge na mgbanwe ugboro. Vector modulator na-enwekarị nkeji ọrụ anọ: mpaghara oscillator 90 Celsius na-agbanwe ike ngalaba na-atụgharị akara ntinye RF ka ọ bụrụ akara RF abụọ. Nkeji igwekota abụọ a na-atụgharị akara ngosi baseband in-phase yana akara quadrature mụbaa na mgbama RF kwekọrọ n'otu n'otu; ngalaba njikọ ike na-achịkọta akara abụọ ahụ mgbe ịba ụba na ntinye. N'ozuzu, ọdụ ụgbọ mmiri ntinye na mmepụta na-akwụsị n'ime ya site na ibu 50Ω wee nweta usoro ịkwọ ụgbọala dị iche iche iji belata nloghachi nke ọdụ ụgbọ mmiri ma melite arụmọrụ nke modulator vector.

A na-eji ngalaba na-emepụta ihe mgbaama baseband iji mepụta akara ngosi baseband nke dijitalụ chọrọ, yana ụdị waveform nyere onye ọrụ nwekwara ike ibudata ya na ebe nchekwa waveform maka imepụta usoro akọwapụtara onye ọrụ. Ihe na-emepụta mgbama baseband na-enwekarị ihe nrụpụta mgbawa, onye na-emepụta data, generator akara, nzacha mkpali (FIR), ihe nzacha dijitalụ, DAC, na nzacha nrụpụta.

2. Mmalite nke isi iyi mgbaàmà RF
Nkà na ụzụ njikọ ugboro ọgbara ọhụrụ na-ejikarị usoro njikọ na-apụtaghị ìhè iji jikọọ ugboro nke isi iyi mkpọtụ na ugboro ugboro nke ebe ntụaka site na mgbachi agbachi agbachi. Ọ na-achọ obere ngwaike akụrụngwa, ntụkwasị obi dị elu, yana oke ugboro ugboro. Isi ya bụ loop akpọchiri agbachi, na isi iyi mgbama RF bụ echiche sara mbara nke ukwuu. N'ikwu okwu n'ozuzu, isi iyi mgbama ọ bụla nwere ike ịmepụta mgbama RF nwere ike ịnya isi iyi mgbama RF. Isi mmalite mgbama vector dị ugbu a dị na band RF, yabụ a na-akpọkwa ha isi mmalite mgbama vector RF.

Nke atọ, ọdịiche dị n'etiti akara abụọ ahụ
1. A na-eji isi iyi mgbaama redio dị ọcha naanị iji wepụta akara ngosi otu ugboro ugboro redio analọgụ, a naghịkwa eji ya ewepụta akara emezigharịrị, ọkachasị akara ngosi dijitalụ. Ụdị isi iyi mgbaàmà a na-enwekarị bandwit sara mbara yana oke ike ike dị ukwuu.

2. A na-ejikarị isi iyi mgbama vector na-emepụta akara ngosi vector, ya bụ, akara ngosi modulation na-ejikarị na nzikọrịta ozi dijitalụ, dị ka l / Q modulation: ASK, FSK, MSK, PSK, QAM, ahaziri I / Q, 3GPPLTE FDD na TDD, 3GPPFDD / HSPA / HSPA +, GSM / EDGE / EDGE evolushọn, TD-SCDMA, WiMAX? Na ụkpụrụ ndị ọzọ. Maka isi iyi mgbama vector, n'ihi modulator ime ya, ugboro anaghị adị oke elu (ihe dịka 6GHz). Ndekọ kwekọrọ ekwekọ nke modulator ya (dị ka bandwidth mgbaama baseband arụnyere n'ime) yana ọnụọgụ ọwa akara bụ ndeksi dị mkpa.

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