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- Ukulahleka Okuphantsi Kokufakwa
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Ngokukodwa, i-microwave dual directional loop coupler yenziwe yi-circular waveguide kunye ne-multiple coupled waveguides. Ngokulungisa amandla okudibanisa phakathi kwe-coupling.
I-Waveguide kunye ne-loop waveguide, ukudluliselwa kwamandla phakathi kwe-waveguides ezahlukeneyo kunokufezekiswa. Icandelo eliphambili le-directional loop coupler yi-circular dielectric block, edla ngokwenziwa yi-tubular okanye i-sheet-like block, enomgca we-microstrip ojikelezayo ngaphakathi kwe-block. Xa isignali ye-high-frequency ingena kwi-annular dielectric block evela kwenye yee-ports, iya kudlula kancinci kwindlela ejikelezayo ngexesha elifutshane kwaye ekugqibeleni isasazwe kwezinye ii-ports. Ngexesha lenkqubo yokudlulisa, ngenxa yeempawu ze-resonance ze-dielectric block kunye nendlela emiselweyo yesekethe, umahluko we-phase shift ugcinwa malunga nama-90 degrees, nto leyo efezekisa ukusasazwa kwamandla ngokuchanekileyo.
Ii-dual directional loop couplers zisetyenziswa kakhulu kunxibelelwano lwe-microwave, iinkqubo ze-radar, unxibelelwano lwesathelayithi, ii-antenna arrays, kunye nezinye iinkalo. Phakathi kwazo, usetyenziso kwiinkqubo zonxibelelwano ezingenazingcingo lubanzi kakhulu, njengeenethiwekhi zonxibelelwano zeselula ze-3G, 4G, 5G kunye neenethiwekhi ze-WLAN, kunye nokuchonga i-radar kunye nokusasaza umabonwakude.
Xa kuthelekiswa nee-couplers zendabuko ze-180 degrees directional, i-broadband dual loop coupler ineenzuzo ezifana ne-bandwidth ebanzi, ilahleko eziphantsi, ivolumu encinci kunye nobunzima, kunye nokuveliswa kunye nokuhlanganiswa okulula. Ingxaki kukuba ulawulo oluchanekileyo oluphezulu luyafuneka ngexesha lenkqubo yokuvelisa, kwaye kunokubakho imiba efana nokungalingani kwesigaba kunye nokuguquguquka kwamandla ngexesha lokusebenza. Ke ngoko, uyilo olukhethekileyo kunye namanyathelo ayafuneka ukuze kulungiswe kwaye kuhlawulwe.
I-QualwaveIbonelela ngee-broadband kunye nee-dual directional loop couplers ezinamandla aphezulu ukusuka kwi-1.72 ukuya kwi-18GHz. Ezi couplers zisetyenziswa kakhulu kwiindawo ezininzi zokusebenza.

| Ii-Couplers zeLoop eziLawulayo ezimbini | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Inombolo yendawo | Ireyithi (GHz) | Amandla (MW) | Ukudibanisa (dB) | IL (dB, Ubuninzi.) | Ulwalathiso(dB, Ubuncinane.) | I-VSWR (Ubuninzi) | Ubungakanani beWaveguide | Iflengi | Izibuko Lokudibanisa | Ixesha lokuKhokhela (iiveki) |
| I-QDDLC-8200-12500 | 8.2~12.5 | 0.33 | 40±1.5, 50±1 | - | 20 | 1.35 | I-WR-90 (BJ100) | FBP100 | I-SMA | 2~4 |
| I-QDDLC-6570-9990 | 6.57~9.99 | 0.52 | 50±1 | - | 20 | 1.3 | I-WR-112 (BJ84) | FBP84, FBE84 | I-SMA | 2~4 |
| I-QDDLC-5300-6000 | 5.3~6 | 1.17 | 30 | 0.2 | 18 | 1.25 | I-WR-159 (BJ58) | I-FDP58 | N | 2~4 |
| I-QDDLC-4640-7050 | 4.64~7.05 | 1.17 | 35±1 | 0.2 | 18 | 1.25 | I-WR-159 (BJ58) | I-FDP58 | N | 2~4 |
| I-QDDLC-3940-5990 | 3.94~5.99 | 1.52 | 50±1 | - | 25 | 1.15 | I-WR-187 (BJ48) | I-FDP48 | I-SMA | 2~4 |
| I-QDDLC-2600-3950 | 2.6~3.95 | 3.5 | 40±0.5, 47±0.5, 50±1 | 0.1 | 20 | 1.2 | I-WR-284 (BJ32) | FDP32, SLAC | N, SMA | 2~4 |
| I-QDDLC-2400-2500 | 2.4~2.5 | 5.4 | 40±0.5, 60±0.5 | - | 22 | 1.2 | I-WR-340 (BJ26) | I-FDP26 | N | 2~4 |
| I-QDDLC-1720-2610 | 1.72~2.61 | 8.6 | 60±1 | - | 20 | 1.25 | I-WR-430 (BJ22) | I-FDP22 | N | 2~4 |
| IiCouplers zeLoop eziDibeneyo eziMbini eziRidged | ||||||||||
| Inombolo yendawo | Ireyithi (GHz) | Amandla (MW) | Ukudibanisa (dB) | IL (dB, Ubuninzi.) | Isikhokelo (dB, Min.) | I-VSWR (Ubuninzi) | Ubungakanani beWaveguide | Iflengi | Izibuko Lokudibanisa | Ixesha lokuKhokhela (iiveki) |
| I-QDDLC-5000-18000 | 5~18 | 500W | 50±1.5 | 0.25 | 12 | 1.5 | I-WRD-500 | I-FPWRD500 | I-SMA | 2~4 |
| I-QDDLC-6000-18000 | 6~18 | 2000W | 30±2 | - | 15 | 1.5 | I-WRD-650 | FPWRD650 | I-SMA | 2~4 |
| I-QDDLC-7500-18000 | 7.5~18 | 1000W | 30±2 | - | 15 | 1.5 | I-WRD-750 | FPWRD750 | I-SMA | 2~4 |