Trihedral reflector, inozivikanwawo sekona inotaridza kana katatu reflexer, chishandiso chinonangwa chinowanzo shandiswa muma antenna uye radar masisitimu.Iyo ine matatu akaronga maratidzi anoumba yakavharwa yetriangular chimiro.Kana magetsi emagetsi arova trihedral reflector, anozoratidzwa kumashure achitevedza gwara rechiitiko, achigadzira masaisai anotaridza akaenzana munzira asi akapesana nechikamu kune chiitiko wave.

Iyi inotevera sumo yakadzama kune trihedral kona maratidziro:

Chimiro uye musimboti:

Trihedral corner reflector ine zvinhu zvitatu zvakarongwa zvakanangidzirwa panzvimbo yakajairwa mharadzano, zvichiita gonyotatu yakaenzana.Imwe neimwe plane reflector igirazi rendege rinogona kuratidza masaisai echiitiko maererano nemutemo wekuratidzira.Kana mafungu echiitiko arova trihedral corner reflector, inozoratidzwa neimwe planar reflector uye inozopedzisira yaita wave wave kuratidza.Nekuda kweiyo geometry yeiyo trihedral reflector, iyo inoratidzwa wave inoratidzwa mune yakaenzana asi yakatarisana negwara pane chiitiko wave.

Features uye Applications:

1. Reflection maitiro: Trihedral kona maratidziro ane yakakwira ratidziro maitiro pane imwe frequency.Iyo inogona kuratidza chiitiko wave kumashure nehupamhi hwekuratidzira, ichigadzira iri pachena chiratidzo chekuratidzira.Nekuda kwekuenzanisa kwechimiro chayo, kutungamira kweiyo wave wave kubva kune trihedral reflector yakaenzana negwara rechiitiko wave asi rakapesana muchikamu.

2. Chiratidzo chakasimba chinoratidzwa: Sezvo chikamu chesaisai chinotaridzwa chakapesana, kana trihedral reflector yakatarisana negwara remasaisai echiitiko, chiratidzo chinotaridzwa chinenge chakasimba kwazvo.Izvi zvinoita kuti trihedral corner reflector ive yakakosha application mumaradar masisitimu ekusimudzira echo chiratidzo chechinangwa.

3. Kutungamira: Mamiriro ekuratidzira eiyo trihedral kona reflector inotungamira, ndiko kuti, chiratidzo chakasimba chekuratidzira chinongogadzirwa pane chaiyo chiitiko angle.Izvi zvinoita kuti zvive zvakakosha mukutungamira antennas uye radar masisitimu ekutsvaga uye kuyera nzvimbo dzakatarwa.

4. Nyore uye ine hupfumi: Chimiro chetrihedral kona reflector iri nyore uye iri nyore kugadzira nekuisa.Kazhinji inogadzirwa nesimbi, yakadai sealuminium kana mhangura, iyo ine mutengo wakaderera.

5. Mamiriro ekushandisa: Trihedral corner reflectors anoshandiswa zvakanyanya mu radar systems, wireless communications, kufamba nendege, kuyerwa uye kumira uye mamwe minda.Inogona kushandiswa sechiratidzo chetariro, kubva, kutungamira kutsvaga uye calibration antenna, nezvimwe.

Pazasi isu tichazivisa chigadzirwa ichi zvakadzama:

Kuti uwedzere kurongeka kweantenna, mhinduro inonzwisisika ndeye kushandisa reflector.Semuyenzaniso, kana tikatanga newaya antenna (lets say a half-wave dipole antenna), tinogona kuisa conductive sheet kuseri kwayo kunanga radiation munzira yekumberi.Kuti uwedzere kuwedzera kutungamirirwa, kona yekona inogona kushandiswa, sezvinoratidzwa muMufananidzo 1. Mhepo pakati pemahwendefa ichava 90 degrees.

Mufananidzo 1. Geometry yeKona Reflector.

Iyo radiation pateni yeiyi antenna inogona kunzwisiswa nekushandisa mufananidzo dzidziso, uyezve kuverenga mhedzisiro kuburikidza array theory.Kuti zvive nyore kuongorora, isu tichafungidzira kuti mahwendefa anoratidza haana magumo muhukuru.Mufananidzo 2 pazasi unoratidza iyo yakaenzana sosi kugovera, inoshanda kune dunhu riri pamberi pemahwendefa.

Mufananidzo 2. Zvinyorwa zvakaenzana munzvimbo yakasununguka.

Iwo madenderedzwa ane madoti anoratidza antenna ari mu-chikamu neiyo chaiyo antenna;iwo x'd out antennas ari 180 madhigirii kunze kwechikamu kuenda kune chaiyo antenna.

Fungidzira kuti antenna yepakutanga ine omnidirectional pateni yakapihwa na ( ）.Ipapo iyo radiation pattern (R) ye "yakaenzana seti yeradiator" yeMufananidzo 2 inogona kunyorwa se:

Izvo zviri pamusoro zvinotevera zvakananga kubva kumufananidzo 2 uye array theory (k ndiyo nhamba yemafungu. Iyo inozobuda pateni ichava nepolarization yakafanana neyepakutanga vertically polarized antenna. Kutungamira kuchawedzerwa ne9-12 dB. Equation iri pamusoro inopa minda yakapenya munzvimbo iri pamberi pemahwendefa Sezvo taifungidzira kuti mahwendefa akanga asina magumo, minda kuseri kwemahwendefa i zero.

Iyo yakananga ichave yakakwirira kwazvo kana d iri hafu-wavelength.Tichifunga kuti chinhu chinopenya cheMufananidzo 1 ipfupi dipole ine pateni yakapihwa ne (), minda yenyaya iyi inoratidzwa mumufananidzo 3.

Mufananidzo 3. Polar uye azimuth mapatani eyakajairwa nemwaranzi pateni.

Iyo radiation pateni, impedance uye kuwana kweiyo antenna inozopesvedzerwa nechinhambwedyeFigure 1. Iyo impedance yekupinza inowedzerwa nereflexer kana spacing iri imwe hafu yewavelength;inogona kuderedzwa nekufambisa antenna pedyo nechiratidziro.KurebaLezviratidzi muMufananidzo 1 anowanzo 2*d.Nekudaro, kana uchitsvaga mwaranzi uchifamba neiyo y-axis kubva kune antenna, izvi zvinoratidzwa kana kureba kwacho kuri ( ).Kureba kwemahwendefa kunofanira kunge kwakareba kudarika chinhu chinopenya;zvisinei sezvo mutsara antenna isingavheneke zvakanaka pamwe ne-z-axis, iyi parameter haina kukosha zvakanyanya.