On-chip TX/RX antenna switching

Details On-chip TX/RX antenna switching On-chip TX/RX antenna switching

2006-05-15

2008-08-26

Takaoka, Dean O (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Having branched circuits

C333S101000, C333S104000

Reexamination Certificate

active

07417515

ABSTRACT:
An on-chip antenna switching scheme for Gigahertz frequencies where for the transmission path a first on-chip switching means is coupled between an on-chip power amplifier and an antenna. In the receiving path a second on-chip switching means at an input to an on-chip low noise amplifier (LNA) connects to ground. Coupled off-chip between the first switching means and antenna and antenna and the second switching means are impedance matching means and a half and a quarter wavelength line, respectively. In transmission mode both switching means are closed, in receiving mode both switching means are open. This allows for optimal transmission of the signal in either direction.

REFERENCES:
patent: 6009314 (1999-12-01), Björk et al.
patent: 6798314 (2004-09-01), Nation
patent: 6950634 (2005-09-01), Dykstra et al.
patent: 6982609 (2006-01-01), McKay et al.
patent: 7057472 (2006-06-01), Fukamachi et al.
patent: 7092681 (2006-08-01), Rofougaran et al.

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