The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2012
Filed:
Nov. 25, 2008
Brecken H. Uhl, La Mesa, NM (US);
Arthur D. Hurtado, Fairfax, VA (US);
Daniel A. Law, Washington, DC (US);
Brecken H. Uhl, La Mesa, NM (US);
Arthur D. Hurtado, Fairfax, VA (US);
Daniel A. Law, Washington, DC (US);
Invertix Corporation, McLean, VA (US);
Abstract
A Direct Spatial Antenna Modulation (DSAM) antenna structure makes use of the instantaneous electromagnetic field state of a radiating antenna structure to achieve direct modulation of a transmitted signal within the antenna. In contrast to existing amplitude and phase-only based digital modulation techniques, this innovative technique utilizes an inherent spatial modulation component, mapping data spatially to different locations in the antenna structure, where each location has different transmitting and receiving properties. This spatial component of the modulation can enable, for example, a unique increase in data transmission speed in a fixed spectral bandwidth with no increase in bit error rate over current phase and amplitude only modulation techniques. Additionally, the DSAM antenna structure affords important benefits in reduced hardware complexity, reduced supply current consumption, and relaxed amplifier linearity requirements. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this Abstract.