Imported: 23 Feb '17 | Published: 22 Oct '02
USPTO - Utility Patents
A hybrid antenna system for a portable Wireless Communication Device (WCD) includes a concealed, internal shielded substrate antenna fixedly mounted to and wholly internally within a casing of the portable WCD. The hybrid antenna system also includes a displaceable antenna, such as a whip antenna, that is selectively extendable from and retractable within the casing. The antenna system includes a mechanism for electrically connecting the displaceable antenna to internal RF circuitry of the portable WCD when the displaceable antenna is in an extended position and for electrically isolating the displaceable antenna from the internal RF circuitry when the displaceable antenna is in a retracted position within the casing.
The foregoing and other features and advantages of the invention will be apparent from the following, more particular description of the preferred embodiments of the invention, as illustrated in the accompanying drawings.
1. A portable communications device (PCD) having an internal antenna and a displaceable antenna connected to a common internal RF circuitry, the internal and displaceable antennas being simultaneously operatively electrically coupled in parallel to the common internal RF circuitry so as to maximize signal gain when the displaceable antenna is not in a retracted position, while when the displaceable antenna is retracted, only the internal antenna is operatively electrically coupled to the common internal RF circuitry.
2. The PCD of
3. The PCD of
4. The PCD of