Pengertian Antena Sectoral Antena Sectoral adalah Antena yang mempunyai gain jauh lebih tinggi dibanding omnidirectional antena di sekitar 10-19 dBi. Yang Yang bekerja pada jarak atau area area -! km. Sudut pancaran antena ini adalah "#-1!0 derajat dan tingkat ketinggian pemasangannya harus diperhatikan agar tidak terdapat kerugian dalam penangkapan sinyal. Pola pancaran yang horisontal kebanyakan memancar ke arah mana antenna ini di arahkan sesuai dengan jangkauan dari derajat pancarannya$ sedangkan pada bagian belakang antenna tidak memiliki sinyal pancaran. Antenna sectoral ini jika di pasang lebih tinggi akan menguntungkan penerimaan yang baik pada suatu sector atau %ilayah pancaran yang telah di tentukan. Kelebihan antena sectoral 1.Relative berbiaya rendah 2.Relative lebih aman 3.Reabilitas Kekurangan antena sectoral 1.Kurang fleksibel jika ada ekspansi 2.Mobilitas yang kurang 3.Kelemahan pada konfigurasi Antena lat dan !ektoral " Kedua antena ini biasa atau lebih cocok digunakan untuk outdoor dan juga bisa digunakan untuk indoor. #alam frekuensi sektoral memiliki 2$% &h' sedangkan lat panel berfrekuensi ()($* &h'. !ektoral memiliki jangkuan +, dan 12, derajat sedangkan flat lebih fokus kira2 1, derajat. Antena !ectoral hampir mirip dengan antena omnidirectional. -ang juga digunakan untuk Access oint to serve a oint)to)Multi)oint /2M0 links. !ang !angat at baik baik untu untuk k memb member erik ikan an serv servis is di daer daerah ah dala dalam m jara jarak k )*k )*km. m. ingginya penguatan pada antena sektoral biasanya dikompensasi dengan lebar pola radiasi yang sempit %()1*, derajat. elas daerah yang dapat di servis menjadi lebih sempit$ dan ini sangat menguntungkan. &ambar &ambar beriku berikutt ini memper memperlih lihatk atkan an polara polaradia diasi si antena antena sektor sektoral. al. !ecara !ecara umum umum radi radias asii ante antena na lebi lebih h bany banyak ak ke muka muka ante antena na$$ tida tidak k bany banyak ak radi radias asii dibelakang antena sektoral. Radiasi potongan vertikal tidak jauh berbeda dengan antena omnidirectional. omnidirectional.
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Antena sektoral biasanya diletakkan di atas to4er yang tinggi$ karena perlu ditilt ditilt sediki sedikitt agar agar member memberika ikan n layana layanan n ke daerah daerah di ba4ahn ba4ahnya. ya. ampak ampak pada pada gambar adalah sebuah antena sektoral 2$% &5' yang berpolarisasi vertikal dengan beam 1*, derajat. Model antena A2.%(61% A2.%(61% di jual di -#7.8om. -#7.8om. ola radiasi antena hori'ontal dan vertikal tampak pada gambar Antennna sectoral ini menggunakan system Waveguide sistem yang biasa digunakan pada Radio Micro4ave$ yaitu pemampatan signal dalam sebuah tabung dan dikeluarkan melalui slot)slotnya$ sehingggi memiliki tingkat efisiensi yang sangat tinggi dan mampu menghasilkan signal yang sangat bagus. Sumber & http&''1p#1stmik% http&''1p#1stmik%p.blogspot.c p.blogspot.com'(01)'11'antena-sec om'(01)'11'antena-sectoral.html toral.html
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embuatan Antena sektoral Amos Amos 2$% &h' 19 dbi db i akhirnya selesai sudah$ saatnya pengujian$ a4alnya sih ragu dengan kemampuannya karena bentuknya itu lho$ sangat sederhana$ tp begitu di test naikkan ke tiang meter$ trus konekin langsung pakek laptop pada jarak sekitar ,, meter$ terhalang pepohonan dan gedung$ eh dapet signal 3 bar dan bro4sing lancar$ test ping$ kena 3 ) % ms$ 4ah bukan main nih antenna$ padahal saya cuman pakek (11,g yg %,,an m: ; pigtail (,cm$ karena itu berani deh di post kesini$ berikut ini pic nya$ cekidot "0
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untuk penyangga ka4atnya biar gak kena reflektor$ saya gunakan tutup
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>ntuk feedernya yang bagian tengah saya contohkan dari gambar lain$ tp prinsipnya sama aja
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dari gainnya sih kalau presisi$ lumayan gede lah$ 1$( dbi dengan polarisasi hori'ontal
yah$ syukur2 nanti bisa buat 2 biji lagi untuk coverage seluruhny$ cuman masih bingung gimana caranya melindungi ini antena supaya tahan gak kena hujan dan matahari langsung$ apakah cukup dengan di cat doang@@ di tunggu revie4 dari temen)temen sekalian... "#