TheLog Periodic Antenna(LPA) idapangidwa mu 1957 ndipo ndi mtundu wina wa antenna yosasinthasintha pafupipafupi.
Yachokera pa lingaliro lofanana ili: pamene antenna yasinthidwa malinga ndi chinthu china chofanana τ ndipo ikadali yofanana ndi kapangidwe kake koyambirira, antenna imakhala ndi magwiridwe ofanana pamene chinthucho chili f ndi τf. Pali mitundu yambiri ya antennas za log periodic, pakati pa zomwe Log Dipole Antenna (LDPA) idaperekedwa mu 1960 ili ndi mawonekedwe otakata kwambiri a bandwidth komanso kapangidwe kosavuta, kotero yagwiritsidwa ntchito kwambiri m'magulu a shortwave, ultra-shortwave ndi microwave.
Antena yozungulira ya log imangobwereza mawonekedwe a radiation ndi mawonekedwe a impedance nthawi ndi nthawi. Komabe, pa antena yokhala ndi kapangidwe kotere, ngati τ si yochepera 1, kusintha kwa makhalidwe ake mkati mwa kuzungulira kamodzi kumakhala kochepa kwambiri, kotero kwenikweni sikudalira pafupipafupi.
Pali mitundu yambiri ya ma antenna a log periodic, kuphatikizapo ma antenna a log periodic dipole ndi ma antenna a monopole, ma antenna a log periodic resonant V-shaped, ma antenna a log periodic spiral, ndi zina zotero, zomwe zodziwika kwambiri ndi antenna ya log periodic dipole.
Monga antenna ya ultra-wideband, bandwidth coverage ndi yayikulu kwambiri, mpaka 10:1, ndipo nthawi zambiri imagwiritsidwa ntchito pokulitsa ma signal, kugawa mkati ndi kuphimba ma signal a elevator. Kuphatikiza apo, antenna ya logarithmic periodic ingagwiritsidwenso ntchito ngati gwero la chakudya cha ma antenna a microwave reflector. Popeza malo ogwira ntchito amayenda ndi ma frequency ogwiritsira ntchito, kusiyana pakati pa malo ogwira ntchito ndi cholinga mu gulu lonse la ma frequency ogwiritsira ntchito kuyenera kukhala mkati mwa mulingo wovomerezeka wololera panthawi yoyika.
RF MISO's Model RM-DLPA022-7 ndi antenna ya dual-Polarized log periodic yomwe imagwira ntchito kuchokera0.2 mpaka 2 GHz, Antena imapereka7dBiphindu lachizolowezi. Antena ya VSWR ndi 2MtunduMa antenna RF ports ndi cholumikizira cha N-Female. Antena ingagwiritsidwe ntchito kwambiri pozindikira EMI, kuyang'ana, kuyang'ana, kuyesa kuchuluka kwa ma antenna ndi mawonekedwe ake ndi magawo ena ogwiritsira ntchito.
RM-DLPA022-7
RF MISO'sChitsanzoRM-LPA0033-6 is zolemba nthawi ndi nthawi antenna yomwe imagwira ntchito kuchokera0.03 to 3 GHz, Antena imapereka 6dBi phindu lachizolowezi. Antena ya VSWR ndi ochepera2:1. RF ya antenna madoko ndiN-Wachikazicholumikizira. Antena ingagwiritsidwe ntchito kwambiri pozindikira EMI, kuyang'ana, kuyang'ana, kuyesa phindu la antena ndi mawonekedwe ake ndi magawo ena ogwiritsira ntchito.
RM-LPA0033-6
RF MISO'sChitsanzoRM-LPA054-7 is zolemba nthawi ndi nthawi antenna yomwe imagwira ntchito kuchokera0.5 to 4 GHz, Antena imapereka 7dBi phindu lachizolowezi. Antena ya VSWR ndi 1.5 Mtundu. RF ya antenna madoko ndiN-Wachikazicholumikizira. Antena ingagwiritsidwe ntchito kwambiri pozindikira EMI, kuyang'ana, kuyang'ana, kuyesa phindu la antena ndi mawonekedwe ake ndi magawo ena ogwiritsira ntchito.
RM-LPA054-7
Kuti mudziwe zambiri zokhudza ma antenna, chonde pitani ku:
Nthawi yotumizira: Disembala-27-2024
