Iyo frequency yechiratidzo mukushandiswa kwemotokari radar inosiyana pakati pe30 ne300 GHz, kunyangwe yakaderera se24 GHz.Nerubatsiro rwemabasa akasiyana edunhu, aya masaini anofambiswa kuburikidza neakasiyana tambo tekinoroji senge microstrip mitsara, mitsetse mitsetse, substrate integrated waveguide (SIW) uye yakadzika coplanar waveguide (GCPW).Aya tekinoroji tekinoroji (Fig. 1) anowanzo shandiswa pa microwave frequencies, uye dzimwe nguva pamillimeter wave frequencies.Circuit laminate zvinhu zvinonyanya kushandiswa kune iyi yakakwirira frequency mamiriro inodiwa.Microstrip mutsara, seyakareruka uye inonyanya kushandiswa yekufambisa mutsara wedunhu tekinoroji, inogona kuwana yakakwirira yedunhu redhisheni nekushandisa yakajairwa wedunhu kugadzirisa tekinoroji.Asi kana iyo frequency yakasimudzwa kune iyo millimeter wave frequency, inogona kunge isiri iyo yakanyanya kunaka yekufambisa tambo.Imwe neimwe nzira yekufambisa ine zvayakanakira nezvayakaipira.Semuenzaniso, kunyangwe iyo microstrip mutsara iri nyore kugadzirisa, inofanirwa kugadzirisa dambudziko rekurasikirwa nemwaranzi yakanyanya kana ichishandiswa pamillimeter wave frequency.
Mufananidzo 1 Kana uchichinjika kuenda kune millimeter wave frequency, vagadziri ve microwave wedunhu vanofanirwa kutarisana nesarudzo yeanokwana mana ekufambisa mitsara tekinoroji pa microwave frequency.
Kunyangwe iyo yakavhurika dhizaini ye microstrip mutsara yakanakira yekubatana kwemuviri, inozokonzera mamwe matambudziko pakakwirira frequencies.Mune microstrip transmission line, electromagnetic (EM) mafungu anopararira kuburikidza ne conductor wedunhu zvinhu uye dielectric substrate, asi mamwe masaisai emagetsi anopararira kuburikidza nemhepo yakatenderedza.Pamusana pekuderera kwaDk kukosha kwemhepo, iyo Dk yakakosha yedunhu yakaderera pane iyo yezvinyorwa zvedunhu, izvo zvinofanirwa kutariswa mukuenzanisa kwedunhu.Kuenzaniswa neyakaderera Dk, maseketi akagadzirwa epamusoro Dk zvinhu anowanzo kutadzisa kutapurirana kwemafungu emagetsi uye kuderedza chiyero chekuparadzira.Naizvozvo, yakaderera Dk yedunhu zvinhu zvinowanzo shandiswa mumamirimita wave maseketi.
Nekuti kune imwe dhigirii remagetsi emagetsi mumhepo, iyo microstrip mutsara wedunhu inopenya kunze mumhepo, yakafanana neantenna.Izvi zvinokonzeresa kurasikirwa kwemwaranzi kune microstrip mutsara wedunhu, uye kurasikirwa kuchawedzera nekuwedzera kwema frequency, izvo zvinounzawo matambudziko kune vanogadzira dunhu vanodzidza mutsara wemicrostrip kudzikamisa redunhu nemwaranzi kurasikirwa.Kuti uderedze kurasikirwa kwemwaranzi, mitsetse yemicrostrip inogona kugadzirwa nezvinhu zvedunhu zvine maDk akakwirira.Nekudaro, kuwedzera kwaDk kunoderedza iyo electromagnetic wave propagation rate (inoenderana nemhepo), zvichikonzera shanduko yechiratidzo.Imwe nzira ndeyekudzikisa kurasikirwa nemwaranzi nekushandisa yakatetepa yedunhu zvinhu kugadzira microstrip mitsetse.Nekudaro, zvichienzaniswa neyakakora yedunhu zvinhu, zvitete zvedunhu zvinhu zvinonyanya kukanganiswa nekukanganiswa kwemhangura foil pamusoro roughness, izvo zvinozokonzera imwe chiratidzo chechiratidzo chekuchinja.
Kunyangwe iyo kumisikidzwa kweiyo microstrip mutsara wedunhu iri nyore, iyo microstrip mutsara wedunhu mune millimeter wave bhendi inoda chaiyo kushivirira kutonga.Semuenzaniso, iyo conductor hupamhi inoda kunyatsodzorwa, uye iyo yakakwira frequency, iyo yakanyanya kuomesesa kushivirira kuchave.Naizvozvo, iyo microstrip mutsara mumillimeter wave frequency bhendi inonzwa zvakanyanya kune shanduko yekugadzira tekinoroji, pamwe nekukora kweiyo dielectric zvinhu uye mhangura muzvinyorwa, uye zvinodikanwa zvekushivirira kune inodiwa saizi yedunhu yakasimba kwazvo.
Stripline yakavimbika yedunhu rekufambisa mutsara tekinoroji, inogona kuita basa rakanaka mumillimeter wave frequency.Nekudaro, zvichienzaniswa neiyo microstrip mutsara, iyo stripline conductor yakakomberedzwa nepakati, saka hazvisi nyore kubatanidza chinongedzo kana imwe yekupinza / yekubuda madoko kune iyo stripline yekufambisa chiratidzo.Iyo stripline inogona kutariswa semhando yeflat coaxial tambo, umo conductor inoputirwa nedielectric layer uye yozovharwa ne stratum.Ichi chimiro chinogona kupa yakakwirira-yemhando yedunhu yekuzviparadzanisa mhedzisiro, uchichengeta chiratidzo chekuparadzira mune yedunhu zvinhu (pane mumhepo yakatenderedza).Iyo electromagnetic wave inogara ichipararira kuburikidza nedunhu zvinhu.Iyo stripline yedunhu inogona kutevedzerwa zvinoenderana nehunhu hwedunhu zvinhu, pasina kufunga nezve pesvedzero yemagetsi emagetsi mumhepo.Nekudaro, mudhiraivha wedunhu akakomberedzwa nepakati ari panjodzi yekuchinja mukugadzirisa tekinoroji, uye zvinonetsa zvekudyisa chiratidzo zvinoita kuti zviome kuti stripline igone kurarama, kunyanya pasi pemamiriro ediki diki rekubatanidza pamillimeter wave frequency.Naizvozvo, kunze kwemamwe maseketi anoshandiswa mumotokari radars, mitsetse haiwanzo shandiswa mumamirimita wave maseketi.
Nekuti kune imwe dhigirii remagetsi emagetsi mumhepo, iyo microstrip mutsara wedunhu inopenya kunze mumhepo, yakafanana neantenna.Izvi zvinokonzeresa kurasikirwa kwemwaranzi kune microstrip mutsara wedunhu, uye kurasikirwa kuchawedzera nekuwedzera kwema frequency, izvo zvinounzawo matambudziko kune vanogadzira dunhu vanodzidza mutsara wemicrostrip kudzikamisa redunhu nemwaranzi kurasikirwa.Kuti uderedze kurasikirwa kwemwaranzi, mitsetse yemicrostrip inogona kugadzirwa nezvinhu zvedunhu zvine maDk akakwirira.Nekudaro, kuwedzera kwaDk kunoderedza iyo electromagnetic wave propagation rate (inoenderana nemhepo), zvichikonzera shanduko yechiratidzo.Imwe nzira ndeyekudzikisa kurasikirwa nemwaranzi nekushandisa yakatetepa yedunhu zvinhu kugadzira microstrip mitsetse.Nekudaro, zvichienzaniswa neyakakora yedunhu zvinhu, zvitete zvedunhu zvinhu zvinonyanya kukanganiswa nekukanganiswa kwemhangura foil pamusoro roughness, izvo zvinozokonzera imwe chiratidzo chechiratidzo chekuchinja.
Kunyangwe iyo kumisikidzwa kweiyo microstrip mutsara wedunhu iri nyore, iyo microstrip mutsara wedunhu mune millimeter wave bhendi inoda chaiyo kushivirira kutonga.Semuenzaniso, iyo conductor hupamhi inoda kunyatsodzorwa, uye iyo yakakwira frequency, iyo yakanyanya kuomesesa kushivirira kuchave.Naizvozvo, iyo microstrip mutsara mumillimeter wave frequency bhendi inonzwa zvakanyanya kune shanduko yekugadzira tekinoroji, pamwe nekukora kweiyo dielectric zvinhu uye mhangura muzvinyorwa, uye zvinodikanwa zvekushivirira kune inodiwa saizi yedunhu yakasimba kwazvo.
Stripline yakavimbika yedunhu rekufambisa mutsara tekinoroji, inogona kuita basa rakanaka mumillimeter wave frequency.Nekudaro, zvichienzaniswa neiyo microstrip mutsara, iyo stripline conductor yakakomberedzwa nepakati, saka hazvisi nyore kubatanidza chinongedzo kana imwe yekupinza / yekubuda madoko kune iyo stripline yekufambisa chiratidzo.Iyo stripline inogona kutariswa semhando yeflat coaxial tambo, umo conductor inoputirwa nedielectric layer uye yozovharwa ne stratum.Ichi chimiro chinogona kupa yakakwirira-yemhando yedunhu yekuzviparadzanisa mhedzisiro, uchichengeta chiratidzo chekuparadzira mune yedunhu zvinhu (pane mumhepo yakatenderedza).Iyo electromagnetic wave inogara ichipararira kuburikidza nedunhu zvinhu.Iyo stripline yedunhu inogona kutevedzerwa zvinoenderana nehunhu hwedunhu zvinhu, pasina kufunga nezve pesvedzero yemagetsi emagetsi mumhepo.Nekudaro, mudhiraivha wedunhu akakomberedzwa nepakati ari panjodzi yekuchinja mukugadzirisa tekinoroji, uye zvinonetsa zvekudyisa chiratidzo zvinoita kuti zviome kuti stripline igone kurarama, kunyanya pasi pemamiriro ediki diki rekubatanidza pamillimeter wave frequency.Naizvozvo, kunze kwemamwe maseketi anoshandiswa mumotokari radars, mitsetse haiwanzo shandiswa mumamirimita wave maseketi.
Mufananidzo 2 Dhizaini uye kuenzanisa kweiyo GCPW yedunhu conductor ine rectangular (pamusoro mufananidzo), asi conductor inogadziriswa kuita trapezoid (pazasi mufananidzo), iyo ichava nemhedzisiro yakasiyana pamillimeter wave frequency.
Kune akawanda ari kubuda mamirimita wave wedunhu maapplication ane hanya nechiratidzo chemhinduro (senge mota radar), zvikonzero zvekusawirirana kwechikamu zvinofanirwa kudzikiswa.Iyo millimeter wave frequency GCPW wedunhu iri panjodzi yekuchinja mune zvigadzirwa uye kugadzirisa tekinoroji, kusanganisira shanduko muzvinhu Dk kukosha uye substrate ukobvu.Chechipiri, kuita kwedunhu kunogona kukanganiswa nehupamhi hwemhangura conductor uye kushata kwepamusoro kwefoiri yemhangura.Nokudaro, hupamhi hwemhangura yemhangura hunofanira kuchengetwa mukati mekushivirira kwakasimba, uye hutsinye hwepamusoro hwemapuranga emhangura hunofanira kuderedzwa.Yetatu, iyo sarudzo yekupfeka pamusoro peGCPW dunhu inogona kukanganisa mamirimita wave kuita kwedunhu.Semuenzaniso, dunhu rinoshandisa kemikari nickel yegoridhe ine nickel yakawanda kurasikirwa kupfuura mhangura, uye nickel plated surface layer ichawedzera kurasikirwa kweGCPW kana microstrip line (Mufananidzo 3).Pakupedzisira, nekuda kwehudiki hurefu, shanduko yehukushi hwekuputira ichaitawo shanduko yemhinduro yechikamu, uye pesvedzero yeGCPW yakakura kupfuura iyo microstrip line.
Mufananidzo 3 Iyo microstrip line uye GCPW dunhu rinoratidzwa pamufananidzo rinoshandisa zvakafanana redunhu zvinhu (Rogers' 8mil gobvu RO4003C ™ Laminate), pesvedzero yeENIG paGCPW dunhu rakakura kwazvo kupfuura iro riri pamutsetse wemicrostrip pamillimeter wave frequency.
Nguva yekutumira: Oct-05-2022
