pankha-beam antena

pankha-beam antena haah eka dishatmak antena aahe joou mukhya beam tayar karato jyachi eka parimanat arund beamwidth aanee prakare parimanat rund beamwidth asate. haah namuna kapalelya paraboloid paravartkadvare kinwa golakar paraboloid paravartkadvare sadhya keela jaeel. paravartak ubhya pratalat arund aanee aadvya pratalat rund asalyane, too eka kiran tayar karato joou ubhya pratalat rund aanee aadvya pratalat arund asato. (antenache pariman jitke mothe asel, beam titka arund asel.)
tattva.
parabolic antenamadhye, feed horn kendrabinduvar thewala jaato aanee paravartkala vikiranit keela jaato. nantarche eka atyant kendrit samantar kiran antaralat parat pathavate jyache varnan pencil aakar mhanoon kele jaau shakate. 
jevha ekhadi vyakti paraboloidcha eka bhag kadhoon takte, tevha tyaa bhagatoon yenari kirane nasht hotat. antena keval aadvya kinwa ubhya bajula thevanyasathi, urvarit antena vibhagala yogya konat asalele kiran kendrit kele jaatil aanee asha prakare prakare dishene rund asatana tyaa dishene eka arund kiran tayar hoil.
vapar.
radar sanchanmadhye pankha beam antena vaparale jaatat. vimantalavaril prathamik radarmadhye anekada antenachya vibhagasah phann-beam asate, joou azimuthmadhye arund beam denyasathi aadvya dishene asato. tyanantar tyanna unchi unchi purak karane aavashyak aahe, kaaran teey unchi shodhu shakat naheet. tyancha paravartak 90 anshanni firto aanee aadvya pratalat rund parantu ubhya pratalat arund assa kiran tayar karato.

