From TIER

Parabolic Antennas

• f = Focal length, D = diameter, c = depth of antenna

f = D*D/(16*c)

• g = Gain in dBi, lambda = wavelength, k = illumination, omega = aperture

g = 10 * log_10( (k * 4 * PI * omega)/(lambda * lambda))

Calculations

• Script to calculate focal length and gain: http://my.athenet.net/~multiplx/cgi-bin/parabolic.main.cgi
• Formula to calculate focal length: http://www.satsig.net/focal-length-parabolic-dish.htm
• Diagrams, pictures for parabolic antennas: http://www.freeantennas.com/projects/template/
• https://ewhdbks.mugu.navy.mil/antennas.htm
• Radio waves propagation : http://www.wlanantennas.com/wlan_faq_radioprop.htm

Antenna Comparision

• Antenna Polarization: Air-Stream
• Commercial antenna comparison: Multi-Polarity Antenna Performance Summary by Apogee Partners.

Buying Antennas

• http://www.afcsat.com
• http://www.winncom.com/products/category/240Dir/list.html
• http://www.tripointglobal.com/broadband.html
• http://www.antennasystems.com/radiowaves.html
• http://www.nsmicrowave.com/products/components/index.htm
• Cost of Radio Waves Antennas:http://www.connectronics.com/radiowaves/