Eli nqaku lichaza uyilo lwesiguquli seRF, kunye nemizobo yebhloko, ichaza uyilo lweRF upconverter kunye noyilo lweRF downconverter. Ikhankanya amacandelo amaza asetyenziswa kule C-band frequency converter. Uyilo lwenziwa kwibhodi ye-microstrip kusetyenziswa amacandelo e-RF acacileyo anje nge-RF mixers, ii-oscillator zasekhaya, ii-MMICs, ii-synthesizers, ii-oscillator zereferensi ze-OCXO, iipads zokuthomalalisa, njl.
RF phezulu uyilo lokuguqulela
Isiguquli samaza eRF sibhekisa kuguqulo lwamaza omoya ukusuka kwelinye ixabiso ukuya kwelinye. Isixhobo esiguqula i-frequency ukusuka kwixabiso eliphantsi ukuya kwixabiso eliphezulu saziwa ngokuba yi-up converter. Njengoko isebenza kumaza kanomathotholo yaziwa ngokuba yiRF up converter. Le modyuli yokuguqula iRF Up iguqulela i-IF frequency kuluhlu olumalunga nama-52 ukuya kuma-88 MHz ukuya kwi-RF frequency malunga ne-5925 ukuya kwi-6425 GHz. Yiyo loo nto yaziwa ngokuba yi-C-band up converter. Isetyenziswa njengenxalenye ye-RF transceiver efakwe kwi-VSAT esetyenziselwa usetyenziso lwesatellite.
Umzobo-1: I-RF up converter block diagram
Makhe sibone uyilo lwe-RF Up converter inxalenye kunye nesinyathelo ngesinyathelo sesikhokelo.
Inyathelo loku-1: Fumana abaxube, i-oscillator yendawo, i-MMICs, i-synthesizer, i-oscillator yereferensi ye-OCXO, i-attenuator pads efumaneka ngokubanzi.
Inyathelo lesi-2: Yenza ubalo lwenqanaba lamandla kumanqanaba ahlukeneyo oluhlu ngakumbi kwigalelo le-MMICs kangangokuba aliyi kudlula indawo yoxinzelelo ye-1dB yesixhobo.
Inyathelo lesi-3: Yila kunye nezihluzo ezifanelekileyo ezisekwe kwi-Micro strip kumanqanaba ahlukeneyo ukucoca amaza angafunekiyo emva komxube kuyilo olusekwe kweyiphi indawo yoluhlu lwamaza ofuna ukudlula.
Inyathelo lesi-4: Yenza ukulinganisa usebenzisa i-ofisi ye-microwave okanye i-agilent HP EEsof enobubanzi obufanelekileyo bomqhubi njengoko kufuneka kwiindawo ngeendawo kwi-PCB yedielectric ekhethiweyo njengoko kufunwa i-RF carrier frequency. Ungalibali ukusebenzisa izinto ezikhuselayo njengendawo ebiyelweyo ngexesha lokulinganisa. Khangela iiparamitha ze-S.
Inyathelo 5: Fumana iPCB yenziwe kwaye ithengise izinto ezithengiweyo kunye nesolder ngokufanayo.
Njengoko kubonisiwe kumzobo webhloko womzobo-1, iipads ezifanelekileyo zokuthintela nokuba yi-3 dB okanye i-6dB kufuneka zisetyenziswe phakathi ukukhathalela indawo yoxinzelelo ye-1dB yezixhobo (ii-MMICs kunye nabaxube).
I-oscillator yendawo kunye ne-Synthesizer yee-frequencies ezifanelekileyo kufuneka zisetyenziswe ngokusekelwe. Kuguqulelo lwebhendi ye-70MHz ukuya kwi-C, i-LO ye-1112.5 MHz kunye ne-Synthesizer ye-4680-5375MHz uluhlu lwamafrikhwensi luyacetyiswa. Umgaqo wesithupha wokukhetha umxube kukuba amandla e-LO kufuneka abe yi-10 dB enkulu kunelona nqanaba liphezulu lesignali yegalelo kwi-P1dB. I-GCN yiNxibelelwano yoLawulo lweGain eyilwe kusetyenziswa izithinteli ze-PIN diode ezahluka-hlukileyo ngokusekelwe kumbane we-analog. Khumbula ukusebenzisa iBand Pass kunye nezihluzi zokupasa okuPhantsi njengoko kwaye xa kufuneka ukucoca amaza angafunekiyo kwaye ugqithise amaza afunwayo.
uyilo lwe-RF Down converter
Isixhobo esiguqula i-frequency ukusuka kwixabiso eliphezulu ukuya kwixabiso eliphantsi saziwa njengesiguquli esisezantsi. Njengoko isebenza kumaza kanomathotholo yaziwa ngokuba yiRF down converter. Makhe sibone uyilo lwe-RF phantsi isiguquli inxalenye kunye nesinyathelo ngesinyathelo. Le modyuli ye-RF down converter iguqulela i-RF frequency kuluhlu ukusuka kwi-3700 ukuya kwi-4200 MHz ukuya kwi-IF frequency kuluhlu ukusuka kwi-52 ukuya kwi-88 MHz. Yiyo loo nto yaziwa ngokuba yi-C-band down converter.
Umzobo-2: I-RF phantsi komzobo webhloko yokuguqula
Umfanekiso-2 ubonisa umzobo webhloko we-C band down converter usebenzisa amacandelo eRF. Makhe sibone uyilo lwe-RF phantsi isiguquli inxalenye kunye nesinyathelo ngesinyathelo.
Inyathelo loku-1: Izixube ezimbini zeRF zikhethwe ngokoyilo lweHeterodyne oluguqula amaza eRF ukusuka kwi-4 GHz ukuya kuluhlu lwe-1GHz kunye nokusuka kwi-1 GHz ukuya kuluhlu lwe-70 MHz. Umxube we-RF osetyenziswe kuyilo yi-MC24M kunye ne-IF mixer yi-TUF-5H.
Inyathelo 2: Izihluzi ezifanelekileyo ziyilelwe ukuba zisetyenziswe kumanqanaba ahlukeneyo e-RF down converter. Oku kubandakanya i-3700 ukuya kwi-4200 MHz BPF, 1042.5 +/- 18 MHz BPF kunye ne-52 ukuya kwi-88 MHz LPF.
Inyathelo 3: I-MMIC amplifier ICs kunye neepads zokuthomalalisa zisetyenziswa kwiindawo ezifanelekileyo njengoko kubonisiwe kumzobo webhloko ukuhlangabezana namanqanaba ombane kwimveliso kunye negalelo lezixhobo. Ezi zikhethwa ngokwenzuzo nganye kunye ne-1 dB ingongoma yoxinzelelo lwe-RF down converter.
Inyathelo lesi-4: I-synthesizer yeRF kunye ne-LO esetyenziswa kuyilo lwesiguquli esiphezulu zikwasetyenziswa kuyilo lwesiguquli esisezantsi njengoko kubonisiwe.
Inyathelo lesi-5: Izahluli zeRF zisetyenziswa kwiindawo ezifanelekileyo ukuvumela umqondiso weRF ukuba udlule kwicala elinye (oko kukuthi ukuya phambili) kunye nokumisa ukubonakaliswa kwayo kweRF kwicala elingasemva. Yiyo loo nto yaziwa ngokuba sisixhobo esi-uni-directional. I-GCN imele iGain control network. I-GCN isebenza njengesixhobo sokuthomalalisa okuguquguqukayo esivumela ukusetwa kwemveliso yeRF njengoko ifunwa luhlahlo lwabiwo-mali lwekhonkco leRF.
Isiphelo: Ngokufana neengqikelelo ezikhankanyiweyo koluyilo lwe-frequency converter, umntu unokuyila abaguquli befrikhwensi kwezinye iifrikhwensi ezinje nge-L band, Ku band kunye ne-mmwave band.
Ixesha lokuposa: Dec-07-2023
