Sengoliloeng sena se hlalosa moralo oa RF converter, hammoho le litšoantšo tsa block, tse hlalosang moralo oa RF upconverter le moralo oa RF downconverter.E bua ka likarolo tse sebelisoang khafetsa ho converter ena ea maqhubu a C-band.Moralo o etsoa ka boto ea microstrip e sebelisang likaroloana tsa RF tse hlakileng joalo ka li-mixer tsa RF, li-oscillator tsa lehae, li-MMIC, li-synthesizer, li-oscillator tsa litšupiso tsa OCXO, li-attenuator pads, jj.
RF up converter moralo
RF frequency converter e bolela phetoho ea maqhubu ho tloha boleng bo bong ho ea ho bo bong.Sesebelisoa se fetolang maqhubu ho tloha ho boleng bo tlase ho ea ho boleng bo holimo se tsejoa e le up converter.Ha e ntse e sebetsa ho maqhubu a seea-le-moea e tsejoa e le RF up converter.Mojule ona oa RF Up converter o fetolela IF frequency ho tloha ho 52 ho isa ho 88 MHz ho isa ho RF frequency ea hoo e ka bang 5925 ho isa ho 6425 GHz.Kahoo e tsejoa e le C-band up converter.E sebelisoa e le karolo e le 'ngoe ea RF transceiver e kentsoeng VSAT e sebelisetsoang lits'ebetso tsa puisano tsa sathelaete.
Setšoantšo-1 : RF up converter block diagram
Ha re boneng moralo oa karolo ea RF Up converter e nang le tataiso ea mohato ka mohato.
Mohato oa 1: Fumana Li-Mixers, Oscillator ea Lehae, li-MMIC, synthesizer, OCXO referense oscillator, li-attenuator pads tse fumanehang ka kakaretso.
Mohato oa 2: Etsa lipalo tsa boemo ba matla ka mekhahlelo e fapaneng ea lineup haholo-holo ha u kenya li-MMIC hoo e ke keng ea feta 1dB compression point ea sesebelisoa.
Mohato oa 3: Rala le li-filters tse nepahetseng tsa Micro strip ka mekhahlelo e fapaneng ho sefa maqhubu a sa batleheng ka mor'a li-mixer moralong ho latela hore na u batla ho fetisa karolo efe ea frequency.
Mohato oa 4: Etsa papiso u sebelisa microwave office kapa agilent HP EEsof e nang le bophara bo nepahetseng ba conductor joalo ka ha ho hlokahala libakeng tse fapaneng ho PCB bakeng sa dielectric tse khethiloeng joalo ka ha ho hlokahala bakeng sa frequency ea RF carrier.U se ke ua lebala ho sebelisa thepa e sireletsang e le sebaka se koaletsoeng nakong ea papiso.Sheba li-parameter tsa S.
Mohato oa 5: Etsa hore PCB e hlahisoe 'me u rekise likarolo tse rekiloeng' me u solder ka mokhoa o ts'oanang.
Joalo ka ha ho bonts'itsoe setšoantšong sa block-1, li-attenuator pads tse loketseng tsa 3 dB kapa 6dB li hloka ho sebelisoa lipakeng ho hlokomela ntlha ea khatello ea 1dB ea lisebelisoa (MMICs le Mixers).
Oscillator ea lehae le Synthesizer ea maqhubu a nepahetseng a hloka ho sebelisoa ho ipapisitse le.Bakeng sa phetolo ea 70MHz ho ea ho C, LO ea 1112.5 MHz le Synthesizer ea 4680-5375MHz frequency range ea khothaletsoa.Molao oa monoana oa ho khetha motsoako ke hore matla a LO a lokela ho ba 10 dB ho feta boemo bo phahameng ka ho fetisisa ba ho kenya letsoho ho P1dB.GCN ke Gain Control Network e etselitsoeng ho sebelisa li-attenuators tsa PIN diode tse fapaneng ho ipapisitsoe le matla a analoge.Hopola ho sebelisa li-filters tsa Band Pass le Low pass ha ho hlokahala ho sefa maqhubu a sa batleheng le ho fetisa maqhubu a batloang.
RF Down converter moralo
Sesebelisoa se fetolang maqhubu ho tloha ho boleng bo phahameng ho ea ho boleng bo tlase se tsejoa e le down converter.Ha e sebetsa ho maqhubu a seea-le-moea e tsejoa e le RF down converter.Ha re boneng moralo oa karolo ea RF down converter e nang le tataiso ea mohato ka mohato.Mojule ona oa RF down converter o fetolela maqhubu a RF ho tloha ho 3700 ho isa ho 4200 MHz ho isa ho IF frequency ho tloha ho 52 ho isa ho 88 MHz.Kahoo e tsejoa e le C-band down converter.
Setšoantšo-2 : RF down converter block diagram
Setšoantšo sa 2 se bonts'a setšoantšo sa block ea C band down converter e sebelisang likarolo tsa RF.Ha re boneng moralo oa karolo ea RF down converter e nang le tataiso ea mohato ka mohato.
Mohato oa 1: Li-mixer tse peli tsa RF li khethiloe ho latela moralo oa Heterodyne o fetolang maqhubu a RF ho tloha ho 4 GHz ho ea ho 1GHz le ho tloha ho 1 GHz ho isa ho 70 MHz.Motsoako oa RF o sebelisitsoeng moralong ke MC24M le IF mixer ke TUF-5H.
Mohato oa 2: Li-filters tse nepahetseng li etselitsoe ho sebelisoa ka mekhahlelo e fapaneng ea RF down converter.Sena se kenyelletsa 3700 ho isa ho 4200 MHz BPF, 1042.5 +/- 18 MHz BPF le 52 ho isa ho 88 MHz LPF.
Mohato oa 3: Li-IC tsa amplifier tsa MMIC le li-pads tsa attenuation li sebelisoa libakeng tse nepahetseng joalo ka ha ho bonts'itsoe setšoantšong sa block ho kopana le maemo a matla a tlhahiso le tlhahiso ea lisebelisoa.Tsena li khethoa ho latela phaello le tlhoko ea ntlha ea 1 dB ea RF down converter.
Mohato oa 4: RF synthesizer le LO tse sebelisitsoeng moralong oa converter ea holimo li boetse li sebelisoa moralong o tlase oa converter joalo ka ha ho bonts'itsoe.
Mohato oa 5: Li-isolator tsa RF li sebelisoa libakeng tse loketseng ho lumella lets'oao la RF ho feta ka nqa e le 'ngoe (ke hore, ho ea pele) le ho emisa ponahalo ea eona ea RF ho leba morao.Kahoo e tsejoa e le sesebelisoa sa uni-directional.GCN e emetse Gain control network.GCN e sebetsa e le sesebelisoa sa ho fokotsa sekhahla se lumellang ho beha tlhahiso ea RF joalo ka ha ho lakatsoa ke tekanyetso ea lihokelo tsa RF.
Qetello: Joalo ka menahano e boletsoeng moralong ona oa RF frequency converter, motho a ka etsa li-converter tsa maqhubu ka maqhubu a mang a kang L band, Ku band le mmwave band.
Nako ea poso: Dec-07-2023
