Pano, iwo mana ekutanga maitiro eRadio Frequents Cunhu anozotaurwa
Radio radio interface yeRadio Frequency Circenic Simulation
Wireless transmitter uye anogamuchira anokonzeresa akapatsanurana zvikamu zviviri: Base Frequency uye radio frequency. Iyo frequental frequency inosanganisira iyo frequency chikamu cheiyo yekuisa chiratidzo che transmitter uye huwandu hwehuwandu hwechiratidzo chekubuda kweanogamuchira. Iyo bandwidth yeiyo frequental inogara ichisarudza chiyero chakakosha pane iyo data inogona kuyerera muhurongwa. Iyo Base Frequency inoshandiswa kuvandudza kuvimbika kweiyo data rwizi uye kuderedza iyo mutoro yakaiswa neinoputika pane iyo yekufambisa yepakati pasi peiyo data yekutumira data. Naizvozvo, zvakawanda zvechiratidzo chekugadzirisa engineering zivo inodiwa paunenge uchigadzira yakakosha frequency dunhu pane PCB. Iyo radio radio redhituru yemuteresi inogona kushandura uye kumusoro-shandura iyo yakagadziriswa baseband chiratidzo kune yakatarwa chiteshi, uye jekisa chiratidzo ichi mumasikati ekutapurirana. Pane zvinopesana, radio frequency dunhu reanogamuchira rinogona kuwana chiratidzo kubva kuChiratidzo kubva kuChiratidzo Chekutumira, uye shandura uye kuderedza iyo frequency kuenda ku base frequency.
Transmitter ine maviri makuru PCB Dhizaina Zvinangwa: Chekutanga ndechekuti ivo vanofanirwa kutapurirana nesimba rakananga apo vachipedza simba diki rinogoneka. Yechipiri ndeyekuti ivo havagone kukanganisa kushanda kwakajairika kwekutapurirana munzira dziri padyo. Sekusvika pane anogamuchira ane hanya, pane matatu makuru PCB Dhizairira zvinangwa: Kutanga, ivo vanofanirwa kudzorera nenzira diki zvidiki. Chechipiri, ivo vanofanirwa kukwanisa kubvisa zvinongedzo zvekupindirana kunze kwenzira yaunoda; Uye chekupedzisira, kunge transmitter, ivo vanofanirwa kushandisa simba zvidiki kwazvo.
Makurukota makuru chiratidzo ye radio frequency circents simulation
Anogamuchira anofanirwa kuve anoterera kwazvo masaini madiki, kunyangwe paine masaini makuru ekuvhiringidza (zvipingaidzo). Mamiriro ezvinhu aya anoitika kana achiedza kugamuchira isina kusimba kana kureba kutumira chiratidzo, uye transmitter ine simba iri pedyo ndeyePedyo ndeyeProcastcasting mune yepedyo chiteshi. Chiratidzo chinosangana chinogona kunge chiri makumi matanhatu kusvika 70 kusvika 70 dB kupfuura chiratidzo chinotarisirwa, uye chinogona kufukidzwa mune yakawandisa chikamu, kana iye anogamuchira anogona kuunza ruzha panguva yekuisa chikamu kuvharira kugashira kwemasaini yakajairika. Kana iye anogamuchira achidzingirwa mune isiri-mutsara wedunhu nekuvhiringidza sosi panguva yekuisa, matambudziko maviri achaitika. Kuti udzivise matambudziko aya, kupera kwekumberi kweanogamuchira kunofanirwa kuve kune mutsara.
Naizvozvo, "mutsara" zvakare ane hanya nekufunga kwePCB yekugadzira kweanogamuchira. Sezvo munhu anogamuchira ari wedunhu rakamanikana, risingatauri rinoyerwa nekuyera "kupindira kusanganisa". Izvi zvinosanganisira kushandisa mafungu maviri emazwi kana mafungu emakonzo ane mafungu akafanana uye ari muCentine bhendi kuti ityaire chiratidzo chekuisa, uye wozoyera chigadzirwa chekupindirana kwayo. Kazhinji, zvinonhuwira ndezvekutora nguva uye zvinodhura-zvakakanganisa software software, nekuti inofanira kuita yakawanda loop kuverenga kuti uwane iyo inodikanwa yekugara yekugadzirisa kuti unzwisise kukanganisa.
Diki inotarisirwa chiratidzo muRF Circuit Simulation
Anogamuchira anofanirwa kuve akanyatsoteerera kuwona zvidiki zvekuisa masaini. Kazhinji kutaura, simba rekuisa reiye anogamuchira anogona kunge ari mudiki se 1 μv. Kunzwa kweiyo anogamuchira anogumira neruzha inogadzirwa nenzvimbo yayo yekuisa. Naizvozvo, ruzha rwakakosha kufunga muPCB dhizaini yeanogamuchira. Uyezve, kugona kufanotaura ruzha nematombo ekufungidzira anokosha. Mufananidzo 1 ishandirwi supereterodyne anogamuchira. Iyo yakagashirwa chiratidzo yakatengwa kutanga, uyezve iyo yekuisa chiratidzo inosimbiswa neyakaderera ruzha amplifier (Lna). Wobva washandisa yekutanga yemunharaunda Oscilllator (lo) kusanganisa neiyi chiratidzo kushandura ichi chiratidzo mulentence frequency (kana). Ruzha kuita kwepamberi-yekupedzisira dunhu kunyanya zvinoenderana neLNA, musanganiswa uye lo. Kunyangwe iyo tsika yekunyora ruzha inogona kuwana ruzha rweLNA, haina basa kune musanganiswa uye lo, nekuti ruzha mumatare aya ichakanganiswa zvakanyanya neye hombe lo chiratidzo.
Chikwangwani chidiki chekuisa chinoda kuti mugamuchire kuve neakanakisa Amplization basa, uye kazhinji inoda kuwana kwe120 DB. Nemubhadharo wakanyanya kudaro, chero chiratidzo chakabatanidzwa kubva pakuguma kwekupedzisira kudzokera kumagumo ekuisa kunogona kukonzera matambudziko. Chikonzero chakakosha chekushandisa iyo Supereterodyne kugamuchira yekuvaka ndeyekuti inokwanisa kugovera kuwana muwanano kazhinji kuderedza mukana wekupenda. Izvi zvakare zvinoita kuti kufambiswa kwekutanga kwekutanga kubva kuwanda kwekuisa chiratidzo, icho chinogona kudzivirira masaini makuru ekuvhiringidza kubva ku "zvakasvibiswa" kune zvidiki zvekupinda zviratidzo.
Nezvikonzero zvakasiyana, mune mamwe masisitimu ekutaurirana, kutendeuka kwakananga kana Hododyne kuvaka kunogona kutsiva Supereterodyne Architecture. Muzviratidzo izvi, iyo RF yekuisa chiratidzo inoshandurwa zvakananga kune iyo yakakosha frequency mune imwe nhanho. Naizvozvo, yakawanda ye kuwana iri mune yakakosha frequental, uye kuwanda kweiyo lo uye iyo yekuisa chiratidzo yakafanana. Mune ino kesi, pesvedzero diki yekubatana inofanira kunzwisiswa, uye nzira yakatsanangurwa ye "nzira yakatsanangurwa ye" nzira yakatsanangurwa "inofanira kunge isimbiswe, yakabatana neyakajeka, uye mafaira) pakati pekudyidzana, uye kuwirirana neyakaenzana.
Adjaceent Channel Kupindira muRadio Frequency Circents Simulation
Kukanganisa kunoitawo basa rakakosha mukutapurirana. Iyo isiri-mutsara yakagadzirwa neTransmitter muDunhu rekubuda rinogona kuparadzira bhasikoro rechiratidzo chinotapukira mumatanho eparutivi. Ichi chiitiko chinonzi "Specral Regrowth". Chiratidzo chisati chasvika kune iyo transmitter's simba amplifier (pa), bandwidth yayo ishoma; Asi "kupindirana kwakashata" muP iyo pachaita kuti bandwedth iwedzere zvakare. Kana iyo bandwidth yakawedzera zvakanyanya, iyo transmitter haizokwanisi kuzadzisa izvo zvigadzirwa zvemagetsi zvendunderera dzayo dzepedyo. Paunenge uchiendesa masainzi akaumbwa, kutaura chokwadi, zvinonhuwira hazvigone kushandiswa kufanotaura kuwedzera kukura kweiyo spectrum. Nekuti kutapurirana kwezviratidzo zvechiratidzo che1 (chiratidzo) kunofanirwa kuve kwakafungidzirwa kuti uwane mhizha yemumiriri, uye mafungu akakwira anotakura anofanirwa kunge achibatanidzwa, ayo achaita spice toni ongororo dzisingabvumirani.
