antentopSince2 July




Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an

Special page devoted to

Compact Cage Antenna



Custom Search


Compact Cage Antenna : by: Vladislav Shcherbakov, RU3ARJ

Everyone knows "classical" quad antenna. Its perimeter is equal to wavelength. Each side of the quad is 1/4 wavelength. Amplification of the "classical" quad antenna is 3-dBi, input impedance (in a free space) is close to 120-Ohm. Good antenna but the size!

It is possible to reduce its size by folding it in a "cage" shape. The simplest cage in which the antenna may be transformed is a cage of 10 sections 0.11 wavelength each. The Compact Cage Antenna (CCA) gain is 1.5-dBi and input impedance is close to 50-Ohm.

PDF file, 170 KB (ANTENTOP-01-2009, pp: 32- 35)

Download PDF File!

HTML Version

Files MMANA:

Trihat- quad

Trihat- quad-1



Contents for AntenTop 01- 2009


Vladislav Shcherbakov, RU3ARJ


Contents for AntenTop 01- 2009







Lightning Links to Open Book





Just for Fun:

Map IP Address


Thanks for your time!

Last Updated:

February 4, 2018 20:51