Mufananidzo 1 unoratidza dhayagiramu yegwara remafungu rakaiswa slotted, rine chimiro chegwara remafungu chakareba uye chakamanikana chine slot pakati. Slot iyi inogona kushandiswa kutumira mafungu emagetsi.

mufananidzo 1. Geometry yeantenna dzinoshandiswa zvakanyanya dzemafungu emhepo.

Antena yepamberi (Y = 0 yakavhurika kumeso mu xz plane) inopihwa. Kumagumo ari kure kunowanzova short circuit (metallic enclosure). Waveguide inogona kumutswa ne short dipole (inoonekwa kumashure kwe cavity slot antenna) papeji, kana neimwe waveguide.

Kuti titange kuongorora antenna yeMufananidzo 1, ngatitarisei muenzaniso wedunhu. Waveguide pachayo inoshanda senzira yekutumira, uye nzvimbo dziri mugwara remagetsi dzinogona kuonekwa senzvimbo dzinopindirana (dzakafanana). Waveguide yakapfupikiswa, saka muenzaniso wedunhu unoratidzwa muMufananidzo 1:

mufananidzo 2. Muenzaniso wedenderedzwa reantenna ine waveguide yakatsemurwa.

Nzvimbo yekupedzisira idaro "d" kusvika kumagumo (iro rakapfupikiswa, sezvakaratidzwa paMufananidzo 2), uye zvinhu zvenzvimbo zvakaparadzaniswa chinhambwe "L" kubva kune chimwe nechimwe.

Saizi yemugero ichapa gwara rewavelength. Wavelength yegwara ndiyo wavelength iri mukati megwara. Wavelength yegwara ( ) ibasa rehupamhi hwewavelength ("a") uye wavelength yenzvimbo yakasununguka. Kune iyo TE01 mode inotonga, wavelength yegwara ndeiyi:

Daro riri pakati penzvimbo yekupedzisira ne "d" yekupedzisira rinowanzo sarudzwa kuti rive kota yewavelength. Mamiriro edzidziso emutsetse wekutumira, mutsetse wepfupi wechikamu chekota-wavelength unotumirwa uchidzika pasi idenderedzwa rakavhurika. Saka, Mufananidzo 2 unoderera kusvika ku:

mufananidzo 3. Muenzaniso wedunhu remafungu ane mitsetse uchishandisa shanduko yekota-wavelength.

Kana parameter "L" yakasarudzwa kuti ive hafu yewavelength, saka input ž ohmic impedance inoonekwa pahafu yewavelength distance z ohms. "L" chikonzero chekuti dhizaini ive hafu yewavelength. Kana waveguide slot antenna yakagadzirwa nenzira iyi, saka ma slots ese anogona kunzi akafanana. Nokudaro, input admittance uye input impedance ye "N" element slotted array inogona kuverengerwa nekukurumidza se:

Kupindira kwekupinda kwewaveguide ibasa re slot impedance.

Ndapota cherechedzai kuti magadzirirwo ari pamusoro apa anoshanda chete pafrequency imwe chete. Sezvo frequency ichibva ipapo dhizaini yewaveguide inoshanda, pachava nekuderera kwekushanda kweantenna. Semuenzaniso wekufunga nezvehunhu hwefrequency yewaveguide yakatsemurwa, kuyerwa kwemuenzaniso sebasa refrequency kucharatidzwa muS11. Waveguide yakagadzirirwa kushanda pa10 GHz. Izvi zvinopihwa kune coaxial feed iri pasi, sezvakaratidzwa muMufananidzo 4.

Mufananidzo 4. Antena yewaveguide ine slotted inopihwa ne coaxial feed.

Chinyorwa cheS-parameter chabuda chinoratidzwa pazasi.

CHERECHEDZA: Antena ine simba guru kwazvo paS11 pa10 GHz. Izvi zvinoratidza kuti simba rakawanda rinoshandiswa rinopfuudzwa pafrequency iyi. Bandwidth yeantenna (kana ichitsanangurwa seS11 iri pasi pe -6 dB) inotangira pa9.7 GHz kusvika pa10.5 GHz, zvichipa bandwidth yechikamu che8%. Cherechedza kuti kunewo resonance iri pakati pe6.7 ne9.2 GHz. Pasi pe6.5 GHz, pasi pe cutoff waveguide frequency uye hapana simba rinopfuudzwa. S-parameter plot inoratidzwa pamusoro apa inopa pfungwa yakanaka yekuti bandwidth slotted waveguide frequency characteristics yakafanana nei.

Patani yemwaranzi ine mativi matatu yegwara remafungu rakatsemurwa inoratidzwa pazasi (izvi zvakaverengerwa uchishandisa package yemagetsi inonzi FEKO). Kubudirira kweantenna iyi kunosvika 17 dB.