I-antenna ye-log-periodic iyi-antenna enamabhendi abanzi umgomo wayo wokusebenza usekelwe ku-resonance kanye nesakhiwo se-log-periodic. Le ndatshana izokwethula futhi kuma-antenna we-log-periodic avela ezicini ezintathu: umlando, umgomo wokusebenza kanye nezinzuzo zama-antenna we-log-periodic.

Umlando wama-antenna we-log-periodic

I-antenna ye-Log-periodic iyi-antenna enebhendi ebanzi umklamo wayo osuselwe esakhiweni se-log-periodic. Umlando wama-antenna we-log-periodic uhlehlela emuva kuma-1950s.

I-antenna ye-log-periodic yaqala ukusungulwa ngo-1957 ngonjiniyela baseMelika u-Dwight Isbell noRaymond DuHamel. Ngenkathi benza ucwaningo eBell Labs, baklame i-antenna ye-broadband ekwazi ukumboza amabhendi amafrikhwensi amaningi. Lesi sakhiwo se-antenna sisebenzisa i-log-periodic geometry, esinikeza izici ezifanayo zemisebe kulo lonke uhla lwamafrikhwensi.

Emashumini eminyaka alandelayo, ama-antenna e-log-periodic asetshenziswe kabanzi futhi afundwa. Asetshenziswa ezindaweni ezifana nokuxhumana okungenantambo, ukwamukela ithelevishini nomsakazo, amasistimu e-radar, izilinganiso zomsakazo, kanye nocwaningo lwesayensi. Izici zebhande elibanzi lama-antenna e-log-periodic ziwenza akwazi ukumboza amabhendi amafrikhwensi amaningi, anciphisa isidingo sokushintsha imvamisa nokushintshwa kwe-antenna, futhi athuthukise ukuguquguquka kwesistimu nokusebenza kahle.

Umgomo wokusebenza we-antenna ye-log-periodic usekelwe esakhiweni sawo esikhethekile. Iqukethe uchungechunge lwamapuleti ensimbi ashintshanayo, ngalinye likhula ngobude kanye nesikhala ngokuya kwesikhathi se-logarithmic. Lesi sakhiwo sibangela ukuthi i-antenna ikhiqize umehluko wesigaba kumaza ahlukene, ngaleyo ndlela izuze imisebe enamabhande abanzi.

Njengoba ubuchwepheshe buthuthuka, ukuklama nezindlela zokukhiqiza zama-antenna we-log-periodic ziye zaba ngcono. Ama-antenna wesimanje we-log-periodic asebenzisa izinto ezithuthukisiwe nezinqubo zokukhiqiza ukuthuthukisa ukusebenza nokuthembeka kwe-antenna.

Umgomo wayo wokusebenza ungachazwa kafushane kanje

1. Umgomo wokuguquguquka: Idizayini ye-antenna ye-log-periodic isuselwe kumgomo we-resonance. Ngokuvama okukhethekile, ukwakheka kwe-antenna kuzokwakha iluphu ezwakalayo, evumela ukuthi uthingo lwamukele kahle futhi lukhiphe amaza kagesi. Ngokuklama ngokuqondile ubude nezikhala zamashidi ensimbi, ama-antenna e-log-periodic angasebenza kumafrikhwensi amaningi anomsindo.

2. Umehluko wesigaba: Isilinganiso selogi-periodic sobude besiqephu sensimbi kanye nokuhlukana kwe-antenna ye-log-periodic kubangela ukuthi ucezu lwensimbi ngalunye lukhiqize umehluko wesigaba kumafrikhwensi ahlukene. Lo mehluko wesigaba uholela ekuziphatheni okuzwakalayo kwe-antenna kumafrikhwensi ahlukene, ngaleyo ndlela unike amandla ukusebenza kwebhendi ebanzi. Izingcezu zensimbi ezimfushane zisebenza kumaza aphezulu, kuyilapho izingcezu ezinde zensimbi zisebenza kumaza aphansi.

3. Ukuskena kwe-beam: Ukwakheka kwe-antenna ye-log-periodic kuyenza ibe nezici ezihlukene zemisebe kumaza ahlukene. Njengoba i-frequency ishintsha, isiqondiso semisebe kanye nobubanzi be-antenna nakho kuyashintsha. Lokhu kusho ukuthi ama-antenna e-log-periodic akwazi ukuskena futhi alungise imishayo phezu kwebhendi yefrikhwensi ebanzi.

Izinzuzo zama-antenna we-log-periodic

1. Izici ze-Broadband: I-antenna ye-Log-periodic iyi-antenna enebhendi ebanzi engamboza amabhendi amafrikhwensi amaningi. Isakhiwo sayo se-log-periodic senza i-antenna ibe nezici zemisebe ezifanayo kulo lonke uhla lwamafrikhwensi, isuse isidingo sokushintshwa kwemvamisa noma ukushintshwa kwe-antenna, ithuthukise ukuguquguquka kwesistimu nokusebenza kahle.

2. Ukuzuza okuphezulu nokusebenza kahle kwemisebe: Ama-antenna e-Log-periodic ngokuvamile anenzuzo ephezulu kanye nokusebenza kahle kwemisebe. Isakhiwo sawo sivumela i-resonance kumabanga amafrikhwensi amaningi, inikeze amandla emisebe anamandla nokwamukela.

3. Ukulawulwa kokuqondisa: Ama-antenna e-Log-periodic ngokuvamile ayaqondisa, okusho ukuthi, anemisebe eqinile noma amandla okwamukela ezindaweni ezithile. Lokhu kwenza ama-antenna e-log-periodic afanele izinhlelo zokusebenza ezidinga ukuqondisa kwemisebe ethile, njengokuxhumana, i-radar, njll.

4. Yenza ukwakheka kwesistimu kube lula: Njengoba ama-antenna e-log-periodic akwazi ukumboza ububanzi befrikhwensi, ukwakheka kwesistimu kungenziwa lula futhi nenani lezimpondo lingancishiswa. Lokhu kusiza ukunciphisa izindleko zesistimu, ukunciphisa ubunzima futhi kuthuthukise ukwethembeka.

5. Ukusebenza okungahambisani nokuphazamiseka: I-antenna ye-Log-periodic inokusebenza okuhle kokunqanda ukuphazamiseka kubhendi yefrikhwensi ebanzi. Ukwakheka kwayo kwenza i-antenna ikwazi ukuhlunga kangcono amasiginali angafuneki futhi ithuthukise ukumelana nesistimu ekuphazamisekeni.

Ngamafuphi, ngokuklama ngokunembile ubude nesikhala samashidi ensimbi, i-antenna ye-log-periodic ingasebenza kuma-resonant frequency ranges amaningi, enezici ze-wide-band, inzuzo ephezulu kanye nokusebenza kahle kwemisebe, ukulawula ukuqondisa, ukuklama uhlelo olulula kanye nokuvimbela ukuphazamiseka. . izinzuzo zokusebenza. Lokhu kwenza ama-antenna e-logarithmic periodic asetshenziswe kabanzi kwezokuxhumana okungenantambo, i-radar, ucwaningo lwesayensi neminye imikhakha.