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:
Nov. 04, 2008
Filed:
Dec. 20, 2006
Tatsuo Itoh, Rolling Hills, CA (US);
Cheng-jung Lee, Los Angeles, CA (US);
Kevin M. Leong, Los Angeles, CA (US);
Tatsuo Itoh, Rolling Hills, CA (US);
Cheng-Jung Lee, Los Angeles, CA (US);
Kevin M. Leong, Los Angeles, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
An apparatus based on composite right-handed or left-handed (CRLH) principles to provide a transmission line or antenna structure having a plurality of cells to which one or more feed ports are attached. The apparatus is based on an equivalent circuit Right-Hand (RH) series induction (L) and shunt capacitor (C), and Left-Hand (LH) series capacitor (C) and induction (L), in which effective permittivity (e) and permeability (m) of the structure are manipulated by the choice of C, L, C, and L. One embodiment describes mushroom antenna cells (D orD array) in which vias extend up from a feed network on a ground plane through at least one dielectric region to each of a first plurality of conductive elements (plates or strips). Optionally, a second plurality of conductive elements are disposed between first and second dielectric layers to form metal-insulator-metal (MIM) capacitors to lower resonance frequency.