Claims
- 1. A radio frequency (RF) remote (RM) capable of RF communication with a communications system comprising:
- means for selecting an RM antenna pattern from a plurality of directional antenna patterns that cover different geographic areas relative to the RM;
- means for periodically generating a signal quality ranking for a plurality of remote device antenna patterns for said RM based on signals communicated between the RM and the communications system;
- said selecting means selecting the RM antenna pattern having the best quality rank for communications between the RM and the communications system;
- means coupled to said selecting means for limiting a person's exposure to RF radiation from said RM when the person is within a predetermined area adjacent said RM.
- 2. The remote module according to claim 1 wherein said limiting means limits a person's exposure to RF radiation from said RM by sensing the degrading of signal quality associated with the selected antenna pattern due to a person entering said predetermined area and causes said selecting means to select a different antenna pattern.
- 3. The remote module according to claim 1 wherein said generating means includes means by evaluating the signal quality ranking of at least certain time division multiplexed packets that are periodically received by the RM.
- 4. In a radio frequency (RF) communications system having a remote module (RM) capable of RF communications, a method of limiting a person's exposure of RF energy transmitted by the RM comprising the steps of:
- selecting an RM antenna pattern from a plurality of directional antenna patterns that cover different geographic areas relative to the RM;
- periodically generating a signal quality ranking for a plurality of remote device antenna patterns for said RM based on signals communicated between the RM and the communications system;
- said selecting step selecting the RM antenna pattern having the best quality rank for communications between the RM and the communications system;
- limiting a person's exposure to RF radiation from said RM when the person is within a predetermined area adjacent said RM.
- 5. The method according to claim 4 wherein said limiting step limits a person's exposure to RF radiation from said RM by causing said selecting means to select a different antenna pattern when a pattern in use has signal quality degradation due to a person entering said predetermined area.
- 6. The method according to claim 4 wherein said generating step includes evaluating the signal quality ranking of at least certain time division multiplexed packets that are periodically received by the RM.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of application Ser. No. 07/601,476 filed Oct. 19, 1950, now U.S. Pat. No. 5,117,236 issued May 26, 1992.
US Referenced Citations (3)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
601476 |
Oct 1990 |
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