Transmission line antenna and utility meter using same
AssigneeMotorola, Inc.
InventorsPaul D. Wolfe, deceased, William C. Phelps, III
Life of this patent
Estimating the term…
Abstract
A transmission line antenna (10) comprises first and second ends (14 & 16). Each end has a mounting portion defining a mounting height and an overlapping portion (18 & 20) defining an overlapping width. The overlapping portions are formed by bringing the ends around the ring and past each other, and are electrically connected together. The antenna is interconnected to a circuit board having a circuit impedance, and the mounting height and overlapping width are configured such that the antenna impedance matches the circuit impedance.
Claims12
A transmission line antenna for a device having a circuit impedance, comprising:
- a ring of conductor having an antenna impedance and first and second ends, each of said ends having a mounting portion defining a mounting height and an overlapping portion defining an overlapping width between the first and second ends;
- and
- wherein said mounting height and said overlapping portion are adjusted such that said antenna impedance matches said circuit impedance.
A utility meter, comprising:
- a circuit board having a circuit having a circuit impedance;
- a ring of conductor, mounted on said circuit board, having an antenna impedance and first and second ends, each of said ends having a mounting portion defining a mounting height and an overlapping portion defining an overlapping width between the first and second ends and wherein said mounting height and said overlapping portion are adjusted such that said antenna impedance matches said circuit impedance.
Dependencies are inferred from the claim text.