Monday, May 26, 2008

Antenna Yang Mudah Di buat "Ground-Plane Antenna"

GROUND-PLANE ANTENNA A vertical quarter-wave antenna several wavelengths above ground produces a high angle of radiation that is very undesirable at vhf and uhf frequencies. The most common means of producing a low angle of radiation from such an antenna is to work the radiator against a simulated ground called a GROUND PLANE. A simulated ground may be made from a large metal sheet or several wires or rods radiating from the base of the radiator. An antenna so constructed is known as a GROUND-PLANE ANTENNA. Two ground-plane antennas are shown in figure , views A and B.



Figure .—Ground-plane antennas. CORNER REFLECTOR When a unidirectional radiation pattern is desired, it can be obtained by the use of a corner reflector with a half-wave dipole. A CORNER-REFLECTOR ANTENNA is a half-wave radiator with a reflector. The reflector consists of two flat metal surfaces meeting at an angle immediately behind the radiator. In other words, the radiator is set in the plane of a line bisecting the corner angle formed by the reflector

Click here to make the simple antenna
Simple Ground Plane Antenna!

Design Ground Plane Antenna by Calculation
Ground Plane Antenna! by Calculation

2 comments:

9w2mnk said...

Welcome to my blogger:

http://9w2mnk.blogspot.com

http://9w2mnk.blogspot.com

http://9w2mnk.blogspot.com

9W2RIE said...

terima kasih 9w2mnk atas kesudian visit blog astra tengah ini

Kod Etika Ahli Radio Amator

Penafian: Pihak Astra Wilayah Tengah tidak akan bertanggungjawab atas sebarang kerosakkan atau kehilangan yang dialami disebabkan oleh pengguna-pengguna yang melawat laman blog ini. Semua maklumat yang dipaparkan tidak mengambarkan pendirian ASTRA Pusat dan tidak menganggu mana-mana pihak. Semua maklumat adalah benar melainkan yang tidak benar sahaja.

Hakcipta Terpelihara © 2011 Astra Wilayah Tengah.

Best View: Mozila Firefox ver 3.0.5 above and Internet Explorer 6 and above

LinkWithin

Related Posts Plugin for WordPress, Blogger...