I agree that is the right criteria for a high gain aperture antenna, and a 1 meter diameter or aperture dish/horn at 9 GHz is very high gain indeed.
> From: Wan Juang Foo <[email protected]> > Reply-To: Wan Juang Foo <[email protected]> > Date: Tue, 27 Apr 2004 17:52:39 +0800 > To: "Price, Andrew P (UK Basildon)" <[email protected]> > Cc: "IEEE EMC-PSTC E-mail Forum (E-mail)" <[email protected]> > Subject: Re: Near field/far field calculation > > > > > > > > Andy, > I assume it is a surface type antenna (dish or whatever) > > 1dB difference criteria (Raleigh range) > > far field x>> 2 D^2 / LAMBDA > > Tim Foo > > "Price, Andrew P (UK Basildon)" <[email protected]> wrote on > 27/04/2004 05:10 PM >> Can anyone help I am having problems calculating the >> near field/far field boundary for a 9GHz Antenna which >> has a length of 1035mm. > > > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ieee-pses.org/ > > To cancel your subscription, send mail to: > [email protected] > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Ron Pickard: [email protected] > Dave Heald: [email protected] > > For policy questions, send mail to: > Richard Nute: [email protected] > Jim Bacher: [email protected] > > All emc-pstc postings are archived and searchable on the web at: > http://www.ieeecommunities.org/emc-pstc > This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
