(12) United States Patent (10) Patent No.: US 8,154.463 B2 Baliarda Et Al

USOO8154463B2 (12) United States Patent (10) Patent No.: US 8,154.463 B2 Baliarda et al. (45) Date of Patent: *Apr. 10, 2012 (54) MULTILEVEL ANTENNAE (52) U.S. Cl. ................................. 343/702:343/700 MS (58) Field of Classification Search ........... 343/700 MS, (75) Inventors: Carles Puente Baliarda, Barcelona 343/702, 829, 846 (ES); Carmen Borja Borau, Barcelona See application file for complete search history. (ES); Jaume Anguera Pros, Barcelona (56) References Cited (ES); Jordi Soler Castany, Mataro (ES) U.S. PATENT DOCUMENTS (73) Assignee: Fractus, S.A., Barcelona (ES) 621,455 A 3, 1899 Hess et al. (*) Notice: Subject to any disclaimer, the term of this (Continued) patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days. FOREIGN PATENT DOCUMENTS Thi tent i biect t t inal di AU 24381.99 9, 1999 inp ent 1s Subject to a terminal d1S- (Continued) OTHER PUBLICATIONS (21) Appl. No.: 13/044,189 Adcock, M.D., “New Type Feed for High Speed Conical Scanning.” (22) Filed: Mar 9, 2011 The Second Symposium on the USAF Antenna Research and Devel e 19 opment Program, Oct. 19-23, 1952. (65) Prior Publication Data (Continued) US 2011 FO163923 A1 Jul. 7, 2011 Primary Examiner — Tho G Phan (74) Attorney, Agent, or Firm — Howison & Arnott, L.L.P. Related U.S. Application Data (57) ABSTRACT (63) Continuation of application No. 12/400,888, filed on An apparatus including a wireless communications device Mar. 10, 2009, now Pat. No. 8,009,111, which is a has an internal antenna system located within the wireless continuation of application No. 1 1/780.932, filed on communications device. The internal antenna system Jul. 20, 2007, now Pat. No. 7,528,782, which is a includes a passive antenna set comprising at least one antenna continuation of application No. 1 1/179.257, filed on element having at least one multilevel structure, a feeding Jul. 12, 2005, now Pat. No. 7,397,431, which is a point to the at least one antenna element and a ground plane. continuation of application No. 1 1/102,390, filed on The feeding point and a point on the ground plane define an Apr. 8, 2005, now Pat. No. 7,123,208, which is a input/output port for said passive antenna set. The passive continuation of application No. 10/963,080, filed on antenna set provides a similar impedance level and radiation Oct. 12, 2004, now Pat. No. 7,015,868, which is a pattern at two or more frequency bands such that the passive continuation of application No. 10/102,568, filed on antenna set is capable of both transmitting and receiving Mar. 18, 2002, now abandoned, which is a wireless signals on selected channels. The selected channels continuation of application No. PCT/ES99/00296, are selectable from a plurality of channels throughout an filed on Sep. 20, 1999. entire frequency range within each of said two or more fre (51) Int. Cl. quency bands. 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