Nhau

Chii chinonziSefa yeRF?

Sefa yemafrequency eredhiyo chikamu chakakosha chetekinoroji isina waya. Inoshandiswa pamwe chete neredhiyo inogamuchira kusefa mamwe mabhendi emafrequency asina basa uye inogamuchira frequency chaiyo chete. Mafirita eRF akagadzirwa kuti ashande zviri nyore muhuwandu hwemafrequency kubva pafrequency yepakati kusvika kumafrequency akakwira kwazvo (semuenzaniso megahertz negigahertz). Nekuda kwehunhu hwayo hwekushanda, inonyanya kushandiswa munhepfenyuro dzeredhiyo, kutaurirana kwewaya, terevhizheni nezvimwe zvishandiso.

Kazhinji, mafirita mazhinji eRF anoumbwa nema resonator akabatana, uye hunhu hwawo hunogona kuona huwandu hwekusefa muRF. Zvichienderana nekushandiswa uye saizi yemidziyo isina waya, kune mhando dzakawanda dzefirita, dzinoti cavity filter, plane filter, electroacoustic filter, dielectric filter, coaxial filter (zvisingabatanidzi tambo ye coaxial), nezvimwewo.

Mhando Dzekutanga dzeRadio Frequency Filter

Sefa yeRF idunhu rakakosha rinobvumira masaini akakodzera kupfuura nepo uchibvisa masaini asingadiwe. Panyaya ye topology ye filter, kune mhando ina huru dze RF filter, dzinoti, filter yepamusoro, filter yepasi, filter yebhendi uye filter yekumisa band.

Firita yeLow Pass:

Sezvinoreva zita racho, firita ine low-pass ifirita inongobvumira ma frequency akaderera kuti apfuure nepakati uye kuderedza mamwe ma frequency echiratidzo panguva imwe chete. Kana chiratidzo chikapfuura nepakati pe bandpass, kudzikiswa kwacho kunoenderana nezvinhu zvakawanda, zvakaita se topology yefirita, marongerwo uye kunaka kwezvikamu. Pamusoro pezvo, topology yefirita inosarudzawo kumhanya kwekuchinja kwefirita kubva pa passband kuti isvike pakudziviswa kwayo kwekupedzisira.

Mafirita epasi diki anouya nenzira dzakasiyana-siyana. Kushandiswa kukuru kwefirita iyi kudzvinyirira harmonic yeRF amplifier. Ichi chinhu chakakosha nekuti chinobatsira kudzivirira kukanganiswa kusingakoshi kubva kumabhendi akasiyana ekutumira. Kunyanya, mafirita epasi diki anoshandiswa kumapurogiramu eaudio uye anosefa ruzha kubva kune chero dunhu rekunze. Mushure mekunge chiratidzo che high-frequency chasefa, frequency yechiratidzo inowanikwa inova nehunhu hwakajeka.

Sefa yeHigh Pass:

Kusiyana nefirita repasi pasi, firita repasi pasi rinongobvumira masaini efrequency yakakwira chete kuti apfuure nepakati. Kutaura zvazviri, firita repasi pasi nefirita repasi pasi zvinopindirana zvikuru, nekuti mafirita ese anogona kushandiswa pamwe chete kugadzira firita repasi pasi. Dhizaini yefirita repasi pasi yakananga uye inoderedza frequency iri pasi pemuganhu.

Kazhinji, mafirita ehigh pass anoshandiswa mumasisitimu eaudio, ayo mafrequency ese akaderera anoseferwa. Pamusoro pezvo, anoshandiswawo kubvisa maspika madiki nebass muzviitiko zvakawanda; mafirita aya akavakirwa zvakananga mumaspika. Zvisinei, kana paine chirongwa cheDIY, iyo high pass filter inogona kubatanidzwa nyore nyore kune sisitimu.

Mafirita eBand Pass:

Sefa yeband-pass idunhu rinobvumira masaini kubva kumafrequencies maviri akasiyana kuti apfuure nepakati uye kuderedza masaini asiri mukati mehuwandu hwaanogamuchirwa. Mafirita mazhinji eband-pass anovimba nechero simba rekunze uye anoshandisa zvikamu zvinoshanda, zvinoti macircuits akabatanidzwa uye matransistors. Rudzi urwu rwefirita runonzi active band-pass filter. Kune rumwe rutivi, mamwe mafirita eband-pass haashandisi simba rekunze uye anovimba zvakanyanya nezvikamu zvisingashande, zvinoti ma inductors nema capacitors. Mafirita aya anonzi mafirita eband-pass asingashande.

Mafirita ebhendi anowanzo shandiswa mumareceiver asina waya nematransmitter. Basa rayo guru mutransmitter nderekuganhurira bandwidth yesignal inobuda kusvika padiki, kuitira kuti data rinodiwa rigone kutumirwa nekukurumidza uye chimiro chinodiwa. Kana receiver ichishanda, firita yebhendi-pass inongobvumira chete kutsanangura kana kunzwa huwandu hunodiwa hwemafrequencies, uku ichibvisa mamwe masignal kubva kumafrequencies asingadiwe.

Muchidimbu, kana firita yebhendi-pass yakagadzirwa, inogona kuwedzera kunaka kwechiratidzo uye kuderedza kukwikwidzana kana kupindirana pakati pezviratidzo.

Kurambwa kweBhendi:

Dzimwe nguva inonzi band stop filter, band stop filter ifirita inobvumira ma frequency mazhinji kuti apfuure pasina kuchinja. Zvisinei, inoderedza ma frequency ari pasi pe range chaiyo. Basa rayo rakasiyana zvachose nere band-pass filter. Chaizvoizvo, basa rayo nderekupfuudza frequency kubva pa zero kuenda pa cut-off point yekutanga ye frequency. Pakati payo, inopfuura ma frequency ese ari pamusoro pe cut-off point yechipiri ye frequency. Zvisinei, inoramba kana kuvharira mamwe ma frequency ese ari pakati pema point maviri aya.

Muchidimbu, sefa chinhu chinobvumira masaini kuti apfuure nepaburi nerubatsiro rwepassband. Nemamwe mashoko, stopband iri mufirita ndiyo nzvimbo apo mamwe mafrequencies anorambwa nechero firita. Ingava high pass, low pass kana band pass, firita yakakodzera ifirita isina kurasikirwa mupass band. Zvisinei, muchokwadi, hapana firita yakakodzera nekuti bandpass icharasikirwa nefrequency uye hazvigoneke kuwana kudzvinyirirwa kusingaperi kana stopband yasvika.

Sei Mafirita eRadio Frequency Achikosha?

Mafirita eRF anoshandiswa kuisa mafrequency esignal muzvikamu, asi chii chinoita kuti ave akakosha kudaro? Muchidimbu, mafirita eRF anogona kusefa ruzha runogona kukanganisa mhando kana mashandiro echero sisitimu yekutaurirana kana kuderedza kupindira kwemasaini ekunze. Kushaikwa kwefirita yeRF yakakodzera kunogona kukanganisa kutapurirana kwemafrequency esignal, uye pakupedzisira kunogona kukanganisa maitiro ekutaurirana.

Saka, maRF filters ane basa rakakosha muhurongwa hwekutaurirana husina waya (semuenzaniso satellite, radar, mobile wireless systems, nezvimwewo). Kana zvasvika pakushanda kwemotokari dzisina vanhu (UAS), kukosha kwemaRF filters kuri pachena. Kushaikwa kwenzira chaiyo yekusefa kuchakanganisa UAS munzira dzakawanda, dzakadai se:

Rudzi rwekutaurirana runogona kuderedzwa kusvika pakukanganiswa kunokonzerwa nezvinhu zvekunze zvakatipoteredza. Pamusoro pezvo, kuwanikwa kwenhamba yakawanda yezviratidzo zveRF mumhepo kunogona kukonzera kukuvara kukuru kune sisitimu yekutaurirana yeUAV. Zviratidzo zvakaipa kubva kune mamwe mapuratifomu zvinosanganisira asi hazvigumiri pa:; Kushanda kwakasimba kwechiratidzo cheWiFi uye mamwe masisitimu ekutaurirana anoshanda mukati meUAS.

Kukanganiswa kwemamwe masisitimu ekutaurirana kuchakanganisa nzira yekutaurirana yeUAS, nokudaro zvichideredza kana kuderedza huwandu hwekutaurirana kwemasisitimu akadaro.

Kupindirana kuchakanganisawo kugamuchira masaini eGPS eUAS; Izvi zvinowedzera mukana wekuti pave nekukanganisa mukutevera GPS. Kana zvanyanya kuipa, izvi zvinogona kukonzera kurasikirwa zvachose kwekugamuchira masaini eGPS.

Nekusefa kweRF kwakakodzera, kukanganiswa kwekunze uye kukanganiswa kwechiratidzo kunokonzerwa nemasisitimu ekutaurirana ari pedyo zvinogona kubviswa zviri nyore. Izvi zvinochengetedza kunaka kwefrequency yechiratidzo inodiwa uku zvichisefa zviri nyore mafrequency ese echiratidzo asingadiwe.

Pamusoro pezvo, maRF filters anoitawo basa rakakosha munharaunda yefoni. Kana zvasvika kumafoni, anoda huwandu hwakati hwema frequency bands kuti ashande nemazvo. Nekuda kwekushaikwa kwemaRF filters akakodzera, ma frequency bands akasiyana haashande pamwe chete panguva imwe chete, zvinoreva kuti mamwe ma frequency bands acharambwa, kureva Global Navigation Satellite System (GNSS), kuchengetedzwa kwevanhu, Wi Fi, nezvimwewo. Pano, maRF filters anoita basa rakakosha nekubvumira maband ese kugara pamwe chete panguva imwe chete.

Kazhinji, mafirita akareruka uye anobatsira kuvandudza mashandiro efrequency yesignal. Kana RF filter isingape mashandiro anodiwa, saka unogona kutsvaga dzimwe sarudzo dzakasiyana-siyana, imwe yacho ndeyekuwedzera ma amplifiers kudhizaini yako. Kubva ku grid amplifier kusvika kune chero imwe RF power amplifier, unogona kushandura frequency yakaderera yesignal kuita frequency yakakwira yesignal; Kuti uvandudze mashandiro ese eRF design.

Si Chuan Keenlion Microwave ine sarudzo yakakura mu narrowband uye broadband configurations, inofukidza ma frequency kubva pa 0.5 kusvika 50 GHz. Yakagadzirwa kuti ikwanise kubata simba rekupinda rema watts gumi kusvika makumi matatu mu 50-ohm transmission system. Madhizaini e microstrip kana stripline anoshandiswa, uye akagadzirirwa kushanda zvakanaka.

Tinogonawo kugadzirisa RF Filter zvichienderana nezvamunoda. Munogona kupinda papeji rekugadzirisa kuti mupe zvinodiwa zvamunoda.

https://www.keenlion.com/customization/

Sichuan Keenlion Microwave Technology Co., Ltd.

E-mail:

sales@keenlion.com

tom@keenlion.com