http://www.google.com/patents/US7586462?printsec=abstract&dq=physically+small+spiral+antenna&ei=J1_QT4n2M9DOrQehlLiJDA#v=onepage&q=physically%20small%20spiral%20antenna&f=false Post navigation The simplicity of Morse code telegraphy Broadband over Power Line: Why Amateur Radio Is Concerned about Its Deployment