User terminal antenna arrangement for multiple-input...

Details User terminal antenna arrangement for multiple-input... User terminal antenna arrangement for multiple-input...

2006-09-12

2006-09-12

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S725000, C343S846000

Reexamination Certificate

active

07106252

ABSTRACT:
Multiple input multiple output (MIMO) systems are able to provide wireless communications at increased data rates. These systems involve using a plurality of antennas on both the transmitter and receiver and the problem of how to accommodate such structures in user terminals, which are often required to be hand held then arises. An antenna arrangement which is suitable for MIMO communications and which can be incorporated into a user terminal such as a personal digital assistant (PDA) is described. A pair of co-polarised umbrella monopoles and a slot antenna are incorporated into a flap which extends at approximately 90° to the body of the PDA. A fourth monopole is mounted and protrudes from the PDA itself.

REFERENCES:
patent: 5463406 (1995-10-01), Vannatta et al.
patent: 5486836 (1996-01-01), Kuffner
patent: 5752204 (1998-05-01), Epperson
patent: 5905467 (1999-05-01), Narayanaswamy
patent: 5937332 (1999-08-01), Karabinis
patent: 5943020 (1999-08-01), Liebendoerfer
patent: 6806835 (2004-10-01), Iwai et al.
patent: WO 02/058187 (2002-07-01), None

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