Multiformat auto-handoff communications handset
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United States of America Patent
Stats
-
Jul 15, 1997
Issued Date -
N/A
app pub date -
Nov 2, 1995
filing date -
Apr 12, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Disclosed is an apparatus and method for supporting communications and handoffs between multiple signal formats at multiple carrier frequencies. Antenna circuitry which includes a linearly polarized antenna and a circularly polarized antenna is utilized to receive and transmit the multiple signal formats at the multiple carrier frequencies simultaneously. A pair of RF signal paths each including RF transmit circuitry, RF receive circuitry and RF processing capabilities are utilized to support simultaneous communications between two signal formats. A multisystem controller in communications with each RF signal path initiates and completes handoffs between the multiple signal formats utilizing both RF signal paths to achieve uninterrupted communications across a large service coverage area.
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