Transmitter for tire condition monitoring apparatus and antenna for the transmitter
First Claim
1. An antenna used in a transmitter of an apparatus for monitoring a condition of a tire of a vehicle, comprising:
- a circuit board having a main surface; and
a loop-shaped transmission conductor located on the main surface, wherein the transmission conductor transmits a transmission signal including data that represents the condition of the tire as radio waves, and wherein the transmission conductor has a loop plane that is substantially perpendicular to the main surface of the circuit board.
1 Assignment
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Accused Products
Abstract
A transmitter for a tire condition monitoring apparatus includes a circuit board, circuit components mounted on a main surface of the circuit board, and a transmission antenna that transmits a transmission signal as radio waves. The transmission antenna includes a loop shaped transmission conductor that transmits radio waves. The transmission conductor has a loop plane that is substantially perpendicular to the main surface of the circuit board. When the transmitter is attached to the wheel, the loop plane is substantially perpendicular to a portion of the circumferential surface of the wheel that faces the transmitter. As a result, when the transmitter is attached to the wheel, the radio wave transmission efficiency is effectively prevented from being reduced.
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Citations
15 Claims
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1. An antenna used in a transmitter of an apparatus for monitoring a condition of a tire of a vehicle, comprising:
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a circuit board having a main surface; and
a loop-shaped transmission conductor located on the main surface, wherein the transmission conductor transmits a transmission signal including data that represents the condition of the tire as radio waves, and wherein the transmission conductor has a loop plane that is substantially perpendicular to the main surface of the circuit board. - View Dependent Claims (2, 3, 4, 5)
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6. A transmitter of a tire condition monitoring apparatus for monitoring a condition of a tire of a vehicle, comprising:
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a circuit board having a main surface;
a transmission circuit mounted on the main surface, wherein the transmission circuit generates a transmission signal containing data that represents the tire condition; and
an antenna that transmits the transmission signal as radio waves, wherein the antenna includes a loop-shaped transmission conductor that transmits the radio waves and has a loop plane that is substantially perpendicular to the main surface of the circuit board. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A transmitter of a tire condition monitoring apparatus for monitoring a condition of a tire of a vehicle, wherein the transmitter is attached to a wheel of the vehicle to face a circumferential surface of the wheel, the transmitter comprising:
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a circuit board having a main surface;
a transmission circuit mounted on the main surface, wherein the transmission circuit generates a transmission signal containing data that represents the tire condition; and
an antenna that transmits the transmission signal as radio waves, wherein the antenna includes a loop-shaped transmission conductor that transmits the radio waves, the transmission conductor having a loop plane, and wherein, when the transmitter is attached to the wheel, the loop plane is substantially perpendicular to a portion of the circumferential surface of the wheel that faces the transmitter.
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Specification