Title (en)

ANTENNA APPARATUS

Publication

EP 0470797 A3 19920513 (EN)

Application

EP 91307187 A 19910805

Priority

• JP 21289690 A 19900810
• JP 21289890 A 19900810

Abstract (en)

[origin: EP0470797A2] In an antenna apparatus, a plurality of divisions of antenna elements (21-24) are formed on a radio apparatus cabinet (41) or on a substrate packaged on the surface of the radio apparatus cabinet (1), the divisions are interconnected together by coils (25-27), and a capacitor (28) is connected in parallel with at least one of the coils. The antenna apparatus is compact and tunable to a plurality of frequencies and has a high antenna gain. <IMAGE>

IPC 1-7

H01Q 1/24; H01Q 5/02

IPC 8 full level

H01Q 1/24 (2006.01); H01Q 5/15 (2015.01)

CPC (source: EP)

H01Q 1/243 (2013.01); H01Q 1/38 (2013.01); H01Q 5/00 (2013.01); H01Q 5/321 (2015.01)

Citation (search report)

• [X] US 2229865 A 19410128 - MORGAN HOWARD K
• [A] US 4675687 A 19870623 - ELLIOTT JAMES O [US]
• [A] DE 3306054 A1 19840823 - MEIER MESSTECHNIK [DE]
• [A] IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY vol. 39, no. 2, May 1990, NEW YORK, US pages 150 - 160; KUBOYAMA, H. ET AL.: 'Experimental Results with Mobile Antennas Having Cross-Polarization Components in Urban and Rural Areas'

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0470797 A2 19920212; EP 0470797 A3 19920513

DOCDB simple family (application)

EP 91307187 A 19910805