Embedded antenna apparatus for utility metering applications
View Patent ↗An embedded antenna for facilitating wireless transmission of utility meter data is disclosed, where in one embodiment an RF antenna is a part of the faceplate of the utility meter. In another embodiment the utility meter faceplate is a single-layer or a multi-layer printed circuit board (PCB) with the RF antenna printed on any desired layer. Such faceplates may be labeled to be viewable from outside of the meter housing and/or have openings to accommodate visual access to an output display of the meter consumption information.
1. A utility meter for monitoring or controlling the distribution of a utility product or service to a customer, said utility meter comprising:
at least one internal housing component for protecting selected electronics and other internal components of a utility meter;
a faceplate attached to the front of said at least one internal housing component, said faceplate characterized by an inner and an outer surface thereof; and
a patterned radio frequency (RF) antenna formed on a selected surface of said faceplate, said patterned RF antenna configured to provide a generally uniform cardioidal radiation pattern to transmit RF signals from a communications module associated with said utility meter.
2. A utility meter as in claim 1 , wherein said patterned RF antenna comprises a dipole antenna.
3. A utility meter as in claim 1 , wherein said faceplate is attached to said housing components by way of tabs provided on said faceplate positioned within slots within said housing.
4. A utility meter as in claim 1 , wherein said patterned RF antenna corresponds to a metallic foil.
5. A utility meter as in claim 4 , wherein said metallic foil comprises one of copper, palladium, silver, and alloys thereof.
6. A utility meter as in claim 1 , wherein said patterned RF antenna provides isotropic antenna gain.
7. A utility meter as in claim 6 , wherein said gain is greater than about 2 dBi.
8. A utility meter as in claim 1 , wherein said patterned RF antenna is formed on the inner surface of said faceplate.
9. A utility meter as in claim 1 , wherein said radiation pattern is in the direction of the front face of the meter and has a peak elevation of between zero (0) and 45 degrees.
10. A utility meter as in claim 1 , further comprising:
an outer cover fitted over said at least one internal housing component and defining a periphery of the utility meter,
wherein said patterned RF antenna is positioned on said faceplate near the periphery of the utility meter.