Apparatus for tuning the antenna of a miniature personal communications device
AssigneeMotorola, Inc.
InventorsPhilip P. MacNak, James S. Irwin
Life of this patent
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Abstract
An antenna tuning arrangement is provided for a miniature personal communications device which is normally worn on the body. The device includes a wristband having an antenna and antenna tuning elements which are normally concealed, to allow the antenna to be tuned while the device is being worn. A receiver in the communications device is coupled to the antenna and to a tuning indicator circuit which provides a tuning indication when the tuning element is adjusted without requiring entry into the device. The tuning indicator operation is selectable and draws no power when not selected.
Claims19
An antenna tuning arrangement for a portable communications device having a receiver for receiving transmitted signals, said arrangement comprising:
- a wristband connected to the device for adapting the device to be worn on the body, said wristband including
- antenna means for intercepting the transmitted signals,
- antenna tuning means, coupled to said antenna means, for tuning said antenna means,
- means for concealment of said antenna tuning means when tuning of said antenna means is not required;
- receiver means, responsive to said antenna means, for receiving the transmitted signals, said receiver means deriving tuning signals in response to said antenna tuning means being adjusted when the transmitted signals are received;
- and
- tuning indicator means responsive to the tuning signals, for providing a tuning indication corresponding to the tuning signals.
An antenna tuning arrangement for a wrist worn communications device having a receiver for receiving transmitted signals combined with a circuit for generating and displaying time, said arrangement comprising:
- means for generating time and means for displaying the same;
- a wristband connected to the device for adapting the device to be worn on the body said wristband including,
- antenna means for intercepting the transmitted signals,
- antenna tuning means, coupled to said antenna means, for tuning said antenna means, and
- means for concealment of said antenna tuning means, when tuning of said antenna means is not required;
- receiver means, responsive to said antenna means, for receiving the transmitted signals, said receiver means deriving tuning signals in response to said antenna tuning means being adjusted when the transmitted signals are received;
- selector means coupled to said receiver means for controlling the selection of the tuning signals;
- amplifier means, coupled to said tuning selector means, for amplifying the tuning signals;
- and
- tuning detector means coupled to said amplifier means for detecting the magnitude of the amplified tuning signals, said tuning detector means further coupled to said display means for effecting the display of indicia indicating the magnitude of the tuning signals.
Dependencies are inferred from the claim text.