• Pogawa chizindikiro m'mazizindikiro awiri ofanana ndi ma amplitude ndi ma differential osasintha a 90° kapena 180° phase.
• Pa kuphatikiza kwa ma quadrature kapena kuchita kuphatikiza kophatikiza/kusiyanitsa.
Chiyambi
Zolumikizira ndi zosakanikirana ndi zida zomwe mizere iwiri yotumizira imadutsana pafupi kuti mphamvu zifalikire pamzere umodzi kuti zilumikizane ndi mzere wina. Chosakanikirana cha 3dB 90° kapena 180° chimagawa chizindikiro cholowera m'magawo awiri ofanana amplitude outputs. Cholumikizira cholunjika nthawi zambiri chimagawa chizindikiro cholowera m'magawo awiri osafanana amplitude outputs. Mawu akuti "cholumikizira cholunjika", "chosakanikirana cha 90°", ndi "chosakanikirana cha 180°" amachokera ku mwambo. Komabe, zosakanikirana za 90° ndi 180° zitha kuganiziridwa ngati zolumikizira zolunjika za 3 dB. Ngakhale kufanana kumeneku, magawo omwe amagwiritsidwa ntchito pofotokoza kayendedwe ka chizindikiro mu zolumikizira zolunjika ndipo kugwiritsa ntchito, pakugwiritsa ntchito kwenikweni, ndi kosiyana mokwanira kuti kuyenerere kuganizira mosiyana.
Kufotokozera kwa Ntchito ya 180° Hybrids
Chosakanikirana cha 180° ndi chipangizo cholumikizirana cha madoko anayi chomwe chimapereka zizindikiro ziwiri zofanana za amplitude in-phase zikaperekedwa kuchokera ku sum port yake (S) ndi zizindikiro ziwiri zofanana za amplitude 180° out-of-phase zikaperekedwa kuchokera ku difference port yake (D). Mosiyana ndi zimenezi, zizindikiro zomwe zimalowetsedwa m'madoko C ndi D zidzawonjezeka pa sum port (B) ndipo kusiyana kwa zizindikiro ziwirizi kudzawonekera pa difference port (A). Chithunzi 1 ndi chithunzi chogwira ntchito chomwe chidzagwiritsidwa ntchito m'nkhaniyi kuyimira 180° hybrid. Port B ikhoza kuonedwa ngati sum port ndipo port A ndiyo difference port. Madoko A ndi B ndi madoko C ndi D ndi madoko awiriawiri osiyana.
Ma Hybrid kapena ma hybrid couplers ndi ma 3 dB directional couplers omwe gawo la chizindikiro chophatikizana ndi chizindikiro chotulutsa zimasiyana 90°. Popeza -3 dB imayimira theka la mphamvu, cholumikizira cha 3 dB chimagawa mphamvu mofanana (mkati mwa kulekerera kwina) pakati pa ma output ndi ma coupled output ports. Kusiyana kwa gawo la 90° pakati pa ma output kumapangitsa ma hybrids kukhala othandiza pakupanga ma electronic variable attenuators, ma microwave mixers, ma modulators ndi zida zina zambiri za microwave ndi machitidwe. Chithunzi 5 chikuwonetsa chithunzi cha dera ndi tebulo la chowonadi zomwe zidzagwiritsidwe ntchito pofotokoza momwe RF frequency 90° hybrid imagwirira ntchito. Monga momwe tikuonera pachithunzichi, chizindikiro chomwe chimagwiritsidwa ntchito pa input iliyonse chidzapangitsa kuti zizindikiro ziwiri zofanana za amplitude zomwe zili quadrature, kapena 90°, zisiyane. Ma Ports A ndi B ndi Ma Ports C ndi D asiyanitsidwa. Monga tafotokozera kale mu gawo la 180° hybrid, zida za RF ndi ma microwave frequency zimagwiritsa ntchito njira zosiyanasiyana zomangira. Ngakhale mayankho a theoretical ndi ofanana, malo a port ndi convention ndi osiyana. Pansipa, pachithunzichi pali mitundu ya "cross-over" ndi "non-crossover" yomwe imaperekedwa pama microwave frequency (500 MHz ndi mmwamba) ndi tebulo la chowonadi chomwe chimachokera. Ma hybrids a digiri makumi asanu ndi anayi amatchedwanso ma quadrature hybrids chifukwa gawo la ma output awiriwa ndi quadrant (90°) mtunda. Dziwaninso kuti sizipanga kusiyana kulikonse kuti ndi doko liti lomwe lili doko lolowera malinga ngati ubale pakati pa madoko ulipo. Izi zili choncho chifukwa ma hybrids a 90° ndi ofanana ndi magetsi komanso makina pa ma X ndi Y Axes onse.
Si Chuan Keenlion Microwave ndi mlatho waukulu wa 3DB hybrid bridge womwe uli ndi ma narrowband ndi ma broadband configurations, womwe umaphimba ma frequency kuyambira 0.5 mpaka 50 GHz. Amapangidwira kuti azitha kugwiritsa ntchito mphamvu yolowera ya ma watts 10 mpaka 30 mu makina otumizira ma 50-ohm. Mapangidwe a microstrip kapena stripline amagwiritsidwa ntchito, ndipo amakonzedwa kuti agwire bwino ntchito.
Mayunitsi amabwera ndi zolumikizira zachikazi za SMA kapena N, kapena zolumikizira za 2.92mm, 2.40mm, ndi 1.85mm za zida zama frequency apamwamba.
Tikhozanso kusintha 3DB Hybrid Bridge malinga ndi zomwe mukufuna. Mutha kulowa patsamba losinthira kuti mupereke zofunikira zomwe mukufuna.
Nthawi yotumizira: Okutobala-09-2022
