Congratulations on your new patent approval, Bonnie. I know what a looooong process that is!
----Original Message Follows---- From: "expeditionradio" <[EMAIL PROTECTED]> Reply-To: [email protected] To: [email protected] Subject: [digitalradio] Coaxial Antenna System - Patent 7,151,497 Date: Sat, 06 Jan 2007 07:26:07 -0000 One of my patents was issued a few weeks ago (19 December 2006). US Patent Number 7,151,497 "Coaxial Antenna System" Some of the applications for it are: ALE, channel scanning transceivers, spread spectrum, and broadband data communications. Antenna systems using the invention are already in several commercial and gov products. Antennas for ALE and FH applications with 2:1 or lower SWR over the 1.6-80MHz range have been manufactured, as well as multi-hundred MHz low SWR broadband antenna systems in the UHF range. One of the commercial consumer applications is a 76-170MHz miniature antenna inside a portable AM/FM/VHF receiver. View the patent (requires TIFF plug-in for your browser) http://tinyurl.com/yywp54 View the patent as text (requires TIFF viewer for the images) http://shorterlink.com/?5MFBJT View the patent as PDF (requires sign-up) http://www.freepatentsonline.com/7151497.html Abstract An antenna system of coaxial elements and terminating impedances produces controlled bandwidth, broadband, and wideband performance under a variety of near field influences, with capability for simultaneous and alternating reception and radiation of electromagnetic radio energy. The antenna system enables broader bandwidths within miniaturized areas of confinement relative to wavelength. Singular elements of the system enable, and a plurality of elements of the system are combined to form specific bandpass, band reject, duplexing, and diplexing for radio frequencies as a function of the antenna system. The antenna system features complex terminating impedances which combine with characteristic impedances of coaxial structures to yield efficient radiating and matching functions for radio energy over a controlled bandwidth. The antenna system simultaneously utilizes the skin effect of electron flow with different vectors flowing on the internal and the external surfaces of the outside conductor of coaxial antenna elements with different vectors. Side note: The invention was developed over a number of years, and it took about 3 years for the patent process. An amateur radio antenna using the coaxial antenna system invention has not been marketed... however, I have personally been using one of the dipole configurations of it on the HF ham bands for several years for ALE and portable HF/VHF work. Bonnie Crystal KQ6XA
