Antena yelog-periodic iantenna ine bhendi rakakura ine musimboti wekushanda wakavakirwa pa resonance uye log-periodic structure. Chinyorwa chino chichakuzivisawo nezve log-periodic antennas kubva pazvinhu zvitatu: nhoroondo, musimboti wekushanda uye zvakanakira log-periodic antennas.

Nhoroondo ye antenna dze log-periodic

Antena yeLog-periodic iantenna ine bhendi rakakura ine dhizaini yakavakirwa pachimiro chelog-periodic. Nhoroondo yemaantena elog-periodic inotangira kuma1950.

Antena yelog-periodic yakatanga kugadzirwa muna 1957 nemainjiniya ekuAmerica Dwight Isbell naRaymond DuHamel. Pavaiita tsvakurudzo kuBell Labs, vakagadzira antena yebroadband inokwanisa kufukidza ma frequency bands akawanda. Chimiro ichi cheantena chinoshandisa log-periodic geometry, iyo inoita kuti ive nehunhu hwakafanana hwemwaranzi pahuwandu hwema frequency ese.

Mumakumi emakore akatevera, ma antenna e log-periodic akashandiswa zvakanyanya uye akadzidzwa. Anoshandiswa munzvimbo dzakadai sekutaurirana pasina waya, kugamuchira terevhizheni neredhiyo, masisitimu e radar, kuyerwa kweredhiyo, uye kutsvagurudza kwesainzi. Hunhu hwe log-periodic antennas hwakafara hunovabvumira kufukidza ma frequency band akawanda, zvichideredza kudiwa kwekuchinja frequency uye kutsiva antenna, uye kuvandudza kuchinjika uye kushanda zvakanaka kwesystem.

Nheyo yekushanda kwe log-periodic antenna yakavakirwa pachimiro chayo chakakosha. Iine nhevedzano yemaplate esimbi anochinjana, rimwe nerimwe richikura muhurefu uye nzvimbo zvichienderana nenguva ye logarithmic. Chimiro ichi chinoita kuti antenna ibudise mutsauko wezvikamu pama frequency akasiyana, zvichiita kuti iwane radiation yakafara.

Sezvo tekinoroji ichifambira mberi, magadzirirwo uye nzira dzekugadzira ma antenna e log-periodic dzave nani. Ma antenna emazuva ano e log-periodic anoshandisa zvinhu zvepamusoro uye maitiro ekugadzira kuti avandudze mashandiro uye kuvimbika kwema antenna.

Nheyo yayo yekushanda inogona kutsanangurwa muchidimbu seinotevera

1. Nheyo yeResonance: Dhizaini ye log-periodic antenna yakavakirwa panheyo ye resonance. Pa frequency chaiyo, chimiro che antenna chichagadzira resonant loop, zvichibvumira antenna kugamuchira uye kuburitsa mafungu e electromagnetic. Nekugadzira zvakananga kureba uye nzvimbo yesimbi, log-periodic antennas dzinogona kushanda munzvimbo dzakasiyana-siyana dze resonant frequency.

2. Musiyano wezvikamu: Chiyero che log-periodic chehurefu hwechidimbu chesimbi uye nzvimbo ye log-periodic antenna chinoita kuti chidimbu chesimbi chega chega chibudise musiyano wezvikamu pama frequency akasiyana. Musiyano wezvikamu uyu unotungamira kune maitiro e resonant e antenna pama frequency akasiyana, nokudaro zvichiita kuti bandwidth yakafara ishande. Zvidimbu zvipfupi zvesimbi zvinoshanda pama frequency akakwira, nepo zvidimbu zvesimbi zvakareba zvichiita pama frequency akaderera.

3. Kuskena kwedanda: Maumbirwo eantenna yelog-periodic anoita kuti ive nehunhu hwakasiyana hwemwaranzi pamafrequencies akasiyana. Sezvo frequency ichichinja, kutungamira kwemwaranzi uye upamhi hwedanda reantenna zvinochinjawo. Izvi zvinoreva kuti antenna dzelog-periodic dzinogona kuskena nekugadzirisa mwenje pamusoro pebhendi refrequency rakafara.

Mabhenefiti e log-periodic antennas

1. Hunhu hweBroadband: Antena yeLog-periodic iantenna ine bhendi rakakura inogona kufukidza mabhendi akawanda emafrequency. Maumbirwo ayo elog-periodic anogonesa antenna kuti ive nehunhu hwakafanana hwemwaranzi muhuwandu hwemafrequency ese, zvichibvisa kudiwa kwekuchinja mafrequency kana kutsiva antenna, zvichivandudza kuchinjika uye kushanda zvakanaka kwesystem.

2. Kushanda zvakanaka kwemwaranzi: Ma antenna eLog-periodic anowanzova nekushanda zvakanaka kwemwaranzi. Maumbirwo awo anobvumira kurira kwema frequency akasiyana-siyana, zvichipa kugona kwakasimba kwemwaranzi uye kugamuchira.

3. Kudzora Kutungamira: Ma antenna eLog-periodic anowanzo kuve akananga, kureva kuti, ane simba guru remwaranzi kana kugona kugamuchira mune mamwe mativi. Izvi zvinoita kuti ma antenna eLog-periodic akwane pamashandisirwo anoda kutungamira kwakanangana nemwaranzi, senge kutaurirana, radar, nezvimwewo.

4. Rerutsa dhizaini yesystem: Sezvo ma antenna e log-periodic achigona kufukidza huwandu hwakakura hwema frequency, dhizaini yesystem inogona kurerutswa uye huwandu hwema antenna hunogona kuderedzwa. Izvi zvinobatsira kuderedza mutengo wesystem, kuderedza kuomarara uye kuvandudza kuvimbika.

5. Kushanda kweAnti-interference: Antena yeLog-periodic ine kushanda kwakanaka kweAnti-interference mubhendi rema frequency rakafara. Maumbirwo ayo anogonesa antena kuti ikwanise kusefa zviri nani ma frequency signals asingadiwe uye kuvandudza kuramba kwesystem kupindira.

Muchidimbu, nekugadzira urefu nekupatsanurana kwemachira esimbi nemazvo, antenna yelog-periodic inogona kushanda munzvimbo dzakasiyana-siyana dzemafrequency, ine hunhu hwakakura, kugona kwakanyanya uye kushanda zvakanaka kwemwaranzi, kudzora kutungamira, dhizaini yesystem iri nyore uye mabhenefiti ekudzivirira kupindira. Izvi zvinoita kuti antenna dze logarithmic periodic dzishandiswe zvakanyanya mukutaurirana kwe wireless, radar, tsvakiridzo yesainzi nedzimwe nzvimbo.