A i-antenna yeslothiluhlobo lwe-antenna yokuvula eyenziwe ngokwenza imingxuma enye okanye ezingaphezulu kumphezulu oqhubayo, njengepleyiti yesinyithi, umngxuma, okanye udonga lwe-waveguide. Xa amasimi e-electromagnetic evuselela umngxuma, imingxuma iba yinto ekhupha imitha kwaye idibanisa amandla avela kwisakhiwo esikhokelwayo okanye esivalekileyo ukuya kwindawo ekhululekileyo.
Nangona ulwakhiwo olusisiseko lwe-slot antenna lunokubonakala lulula, uyilo olusekelwe kwi-slot ludlala indima ebalulekileyo kwi-RF yanamhlanje kunye nobunjineli be-microwave.ubude besithuba, ububanzi, indawo, ulwalathiso, uvuselelo, kunye nesakhiwo esijikelezileyo, iinjineli zinokufumana iimpawu ezahlukeneyo ze-impedance, i-polarisation, ipatheni yemitha, kunye neempawu zemitha.
Ii-antenna ze-slot zingasetyenziswa njengee-radiator ezizodwa okanye zibekwe zibe nkuluuluhlu lwe-waveguide olufakwe kwi-slotted, nto leyo eyenza ukuba zibe luncedo kwi-radar, unxibelelwano, ukulinganisa, ukuva, kunye nezinye iinkqubo ze-microwave. Inqaku lokuqala lesalathiso lazisa i-slot antenna njengokuvulwa okungxande kumphezulu wokuhambisa kwaye lichaza indlela esebenza ngayo ngokusebenzisa umgaqo weBabinet.
1. Yintoni i-Slot Antenna?
I-antenna elula kakhulu inokubonwa njengomnyango omncinci ongxande osikiweyo ube yiphepha eliqhuba umbane.
Xa intsimi ye-RF imiselwe kulo mnyango, imisinga ehamba phezu komphezulu wesinyithi ojikelezileyo iyaphazamiseka, kwaye amandla e-electromagnetic adluliselwa kwisithuba.
Kuhlalutyo lwethiyori, iphepha lokuqhuba lidla ngokuphathwa njengelikhulu ngokungenammiselo neliqhuba ngokugqibeleleyo. Nangona kunjalo, ii-antenna zokwenyani zisebenzisa iindawo zesinyithi ezilinganiselweyo, iindonga ze-waveguide, imingxunya, okanye ezinye izakhiwo ezisebenzayo. Ubukhulu kunye nokusingqongileyo okujikeleze indawo yokubeka ke ngoko kunefuthe kwindlela yokuziphatha kwe-antenna yokwenyani.
Ngokungafaniyo ne-antenna yocingo, apho umsinga ugeleza khona kwi-element eqhubayo, i-antenna yeslot iphuma kwi-umngxuma kwisakhiwo sokuqhubaOlu lwalamano luhambelanayo sesinye sezizathu zokuba ii-antenna ze-slot zinxulunyaniswe ngokusondeleyo nomgaqo weBabinet.
2. Ubuninzi bokusebenza kwee-Antennas zeSlot
Isalathiso sokuqala siqalisaUkusuka kwi-300 MHz ukuya kwi-30 GHznjengoluhlu oluqhelekileyo lokusebenza lwee-antenna zeslot. Oku kuluncedo njengentshayelelo ngokubanzi, kodwa akufuneki kutolikwe njengomda wefrikhwensi jikelele.
Kwinjineli ye-antenna esebenzayo, uluhlu lweefrikhwensi ezisebenzisekayo luxhomekeke kwisakhiwo esithile. Izinto ezibalulekileyo ziquka:
- Ubude kunye nobubanzi besithuba
- Ukuqhuba ubukhulu bomphezulu
- Indlela yokondla
- I-waveguide okanye i-cavity geometry
- Imo yokusebenza
- Isithuba sezinto kuluhlu
Ii-antenna ze-slot zixhaphake kakhulu kwiinkqubo ze-microwave kuba ii-slot zinokudityaniswa ngokulula kwiindonga ze-waveguide. Kwii-frequency eziphezulu, ubude obuncinci be-wavelength buvumela ii-slot ezininzi ukuba zihlelwe zibe zii-arrays ezincinci ze-high-directivity.
3. Isebenza njani i-Antena yeSlot?
Xa amasimi e-electromagnetic eshukunyiswa ngaphakathi okanye kufutshane nesakhiwo sokuqhuba, imisinga yomphezulu ihamba ngesinyithi.
Ukungenisa i-slot kuphazamisa indlela eqhelekileyo yamandla ombane. Amasimi ombane aqinileyo anokuvela kulo lonke ithuba lokuvula, kwaye i-slot idibanisa inxalenye yamandla ombane abe yindawo ekhululekileyo.
Ukuziphatha ngqo kwemitha kuxhomekeke kwindlela i-slot evuya ngayo.
Umzekelo, kwii-antenna yesikhokelo samaza esine-slotted, indawo kunye nolwalathiso lwesloti ngokumalunga nosasazo lwangoku lwe-waveguide luchaza ukuba eso sloti sinomdla kangakanani. Iisloti ezininzi zinokubekwa kwaye zibekwe ngokwesithuba ukuze zenze uluhlu olunepatheni ye-gain kunye ne-beam oyifunayo.
Yingakho uyilo lwe-slot antenna lungengombandela nje "wokusika umngxuma kwisinyithi." Ijiyometri yeslot, indawo, isithuba, isigaba, kunye nolwakhiwo lwesondlo kufuneka ziqwalaselwe kunye.
Umfanekiso 1. Isakhiwo seslothi esisebenzayo esibonisa imitha ye-electromagnetic ngokusebenzisa imingxuma kumphezulu oqhubayo.
4. I-Babinet's Principle kunye ne-Slot Antennas
Enye yezona ngcamango ziluncedo kakhulu ekuqondeni ii-antenna ze-slot yileUmgaqo kaBabinet, ngakumbi ulwandiso lwayo lwe-electromagnetic.
Ingcamango esisiseko kukuthelekisa izakhiwo ezimbini ezihambelanayo:
- Islothi esisikwe kwiplani yokuqhuba
- Umcu oqhubayo onejometri efanayo naleyo ndawo
Ukuba imimandla yesinyithi kunye nemimandla evulekileyo yesakhiwo esinye iyatshintshiswana, ezi zimbini zithathwa njengezihambelanayo.
Kwithiyori ye-antenna, iimpawu zemitha ye-slot antenna zinokunxulunyaniswa nezo zesakhiwo sayo esifana ne-dipole. Iimilo zepateni yemitha zihlobene kakhulu, ngelixa iindima zombane kunye ne-magnetic field ziyatshintshiselana. Oku kuthetha ukuba i-polarization ye-slot ihambelana ne-dipole yayo ehambelanayo.
Umzekelo, indawo encinci ethe tyaba idla ngokuvelisa intsimi yombane ejikelezileyo ethe nkqo kwi-axis ende yendawo.
Ngoko ke umgaqo weBabinet sisixhobo esibalulekileyo sokuqonda i-impedance, i-polarization, kunye nokuziphatha kwemitha yee-antennas ze-slot ezisisiseko.
Umfanekiso 2. Umzobo wezakhiwo ezincedisanayo ezisetyenzisiweyo ukuchaza umgaqo weBabinet.
5. I-Antena yeSlot kunye ne-Antena yeDipole
I-slot emxinwa kunye ne-dipole yayo encedisayo inika uthelekiso oluluncedo kwi-antenna theory.
Zombini zinokubonisa iimilo ezifanayo zepateni yemitha phantsi kweemeko ezifanelekileyo ezihambelanayo, kodwa ukujongwa kwentsimi yazo ye-electromagnetic kwahlukile.
Kwi-dipole eqhelekileyo, intsimi yombane idla ngokuhambelana ne-dipole element. Kwi-slot encedisayo, intsimi yombane ihambelana ngqo ne-axis ende ye-slot.
Olu lwalamano oluhambelanayo aluthethi ukuba yonke i-antenna yeslot esebenzayo isebenza njenge-dipole. Izakhiwo zokwenyani zinokubandakanya iiplani zomhlaba ezilinganiselweyo, ii-cavities, ii-waveguides, ii-slots ezininzi, izinto ze-dielectric, kunye nezinto ezikufutshane ze-mechanical, zonke ezinokutshintsha i-impedance kunye nepatheni yemitha.
6. Ipateni yeMisebe kunye nePolarization
Inqaku lokuqala lichaza ipateni yemitha ye-slot antenna njenge-omnidirectional kwaye liyithelekisa ne-half-wave dipole.
Kwindawo elula ehlukanisiweyo kwiplani enkulu yokuqhuba, ipateni yemitha ebanzi efana ne-dipole yindlela eluncedo yokwazisa. Nangona kunjalo,"On-directional" akufuneki iphathwe njengepropathi yendalo yonke yazo zonke ii-antenna ze-slot.
Ipateni yokugqibela ixhomekeke kwi:
- Ubukhulu beslot
- Ukuqhelaniswa kweslot
- Umphezulu wokuqhuba
- Isakhiwo sokondla
- Inani leendawo zokubeka
- Isithuba sezinto kunye nesigaba
- IiReflectors okanye iimbobo ezingasemva kwesithuba
Kwi-array ye-waveguide ene-slotted, ii-slots ezininzi ezikhupha imitha zinokusebenza kunye ukuvelisa umqadi omxinwa, ojolise kakhulu kwicala kunye nokuzuza okuphezulu kakhulu.
Lo mahluko ubaluleke kakhulu xa kuxoxwa ngee-radar ezisebenzayo kunye nee-antenna zonxibelelwano.
Umfanekiso 3. Ipatheni yemitha efana neDipole esetyenziselwa ukubonisa indlela esebenza ngayo i-antenna yeslot esisiseko phantsi kweemeko ezifanelekileyo.
7. Ii-Antennas kunye nee-Arrays ze-Slotted Waveguide
Enye yezona zinto zibalulekileyo ezisetyenziswayo zobuchwepheshe be-slot antenna yii-antenna yesikhokelo samaza esine-slotted.
Kule sakhiwo, iindawo ezikhupha imitha zinqunyulwa eludongeni lwe-waveguide ephethe amandla e-microwave. I-slot nganye idibanisa ubungakanani bamandla obulawulwayo kwi-waveguide kwaye iyikhuphele kwindawo ekhululekileyo.
Xa iindawo ezininzi zibekwe ecaleni kwelinye okanye ngaphezulu kwendlela ye-waveguide, zenza i-i-antenna ye-slot slot array yesikhokelo se-waveguide.
Ngokulawula ngononophelo indawo yeslothi, isithuba, ulwalathiso, kunye novuyo, abayili banokufezekisa:
- Inzuzo ephezulu
- Ububanzi bemitha obuncinci
- Iicala ezilawulwayo
- Ukuphola okufunekayo
- Iimbobo ezicwangcisiweyo zeplanar
I-RF MISO inika okwangokuIi-Antennas zeSlot zeWaveguidekunye neemveliso ze-waveguide ezifakwe kwi-slotted kwizicelo ze-microwave. Umzekelo, ipotifoliyo yemveliso yayo iquka ii-antenna ze-waveguide ezifakwe kwi-slotted 8.6–9.6 GHz kunye ne-9–10 GHz ezine-linear polarization kunye ne-high-gain configurations.
I-RF MISO ikwasebenzisa uyilo lwe-waveguide slot array kumsebenzi wayo we-R&D, kuquka uyilo lwe-X-band array.
8. Iingenelo zeSlot Antennas
Ii-antenna ze-slot zibonelela ngeenzuzo ezininzi ezisebenzayo:
Ukuhlanganiswa okuphantsi
Izithuba zinokwenziwa ngokuthe ngqo kwiiphaneli zokuqhuba okanye kwiindonga ze-waveguide.
Ukuhlanganiswa okuhle koomatshini
Isakhiwo esikhupha imisebe asisoloko sifuna into yangaphandle ephumayo.
Ifanelekile kwii-antenna arrays
Izithuba ezininzi zingadityaniswa ngokufanelekileyo zibe zii-arrays ezicwangcisiweyo okanye ezixhaswa yi-waveguide.
Uyilo lwemitha eguquguqukayo
Ulungiselelo lweslot kunye nokuvuselela kunokulungiswa ngokweemfuno ezahlukeneyo zenzuzo kunye nemitha.
Ukuhambelana neenkqubo ze-waveguide
Kwii-microwave kunye nee-millimeter-wave frequency, ii-slots zinokudityaniswa ngokuthe ngqo nezakhiwo zokutya ze-waveguide ezingaphantsi kwelahleko.
9. Imida kunye nezinto eziqwalaselwayo kuyilo
Ii-antenna ze-slot nazo zibandakanya imingeni emininzi yobunjineli.
Isithuba esinye sinokubonelela ngenzuzo encinci kunye nemitha ebanzi. Ukufikelela kwisikhokelo esiphezulu kudla ngokufuna ulwakhiwo lwe-array.
Ukusebenza kunokuba novelwano kwi:
- Ukuchaneka koomatshini beSlot
- Ubukhulu bomhlaba
- Ukunyamezelana kwamaza
- Isithuba phakathi kwesithuba nesithuba
- Isigaba sokondla
- Umgangatho womphezulu
- Ulungelelwaniso lwesakhiwo
Kwi-microwave ephezulu kunye ne-millimeter-wave frequency, iimpazamo ezincinci zoomatshini zinokumela inxenye enkulu yobude be-wavelength. Ngoko ke ukuchaneka kokwenziwa kwemveliso kubaluleka ngakumbi.
Inqaku lokuqala lidwelisa i-cross-polarization ephezulu kunye nokusebenza kakuhle kwemitha ephantsi njengeengxaki ngokubanzi. Ngokwenyani, ezi mpawu zixhomekeke kakhulu kuyilo kwaye akufuneki ziphathwe njengeempawu ezingenakuphepheka ze-slot antenna nganye okanye i-slot array.
10. Usetyenziso lwee-Antennas zeSlot
Ii-antenna ze-slot kunye ne-slotted waveguide arrays zisetyenziswa kakhulu kwiinkqubo ze-RF kunye ne-microwave, kuquka:
- Iinkqubo zeradar
- Unxibelelwano lwe-microwave
- Ii-antenna arrays
- Iinkqubo zokukhangela
- Umlinganiselo we-RF
- Iinkqubo zokuva
- Amaqonga eSatellite kunye neenqwelo-moya
- Iinkqubo ze-antenna ezixhaswa ngamaza
Isalathiso sokuqala sigxininisa ngokukodwa ukuhamba kwe-radar kunye ne-waveguide-fed arrays njengezicelo eziqhelekileyo ze-slot antenna.
Kwiinkqubo ze-microwave ezisebenzisa ulwalathiso oluphezulu, ii-waveguide arrays ezine-slotted zibonelela ngokudibanisa okusebenzayo kweijiyometri yeplanar, ukutya kwe-waveguide, iipateni zemitha ezilawulwayo, kunye nokukhula kwe-array.
Isiphelo
I-antenna yeslot iguqula amandla e-electromagnetic abe yimitha ye-free-space nge-aperture eyenziwe kumphezulu oqhubayo.
Nangona i-geometry yayo esisiseko ilula, indlela esebenza ngayo i-electromagnetic ye-slot ixhomekeke kakhulu kubukhulu bayo, ukujolisa kwayo, ukuvuseleleka kwayo, kunye nolwakhiwo lwayo olujikelezileyo.
Umgaqo weBabinet ubonelela ngonxibelelwano olusebenzayo phakathi kwee-antenna ze-slot kunye nezakhiwo ze-dipole ezincedisayo, ukunceda iinjineli ziqonde iimpawu zazo ze-polarization kunye ne-radiation.
Kwi-microwave engineering esebenzayo, ingcamango ye-slot iba namandla ngakumbi xa idityaniswe netekhnoloji ye-waveguide. Ii-slot ezininzi zinokudibaniswa kwiii-antenna ze-waveguide ezifakwe kwi-slotted, okuvumela i-gain ephezulu, i-controlled beamwidth, kunye ne-compact planar antenna architectures ze-radar, unxibelelwano, ukulinganisa, kunye neenkqubo zokuva.
Ixesha lokuthumela: Agasti-28-2026
