Wireless communication device
First Claim
1. A wireless communication device, comprising:
- a first conductor;
a second conductor which is disposed substantially parallel to the first conductor;
a hole which is formed in the second conductor;
capacitive coupling means which are disposed adjacent to the hole; and
a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function,wherein the hole contains a magnetic field coupling element magnetically coupled with a microstrip antenna consisting of the first conductor and the second conductor and an inductance element which forms inductance,wherein the communication circuit is connected through the capacitive coupling means to the two sites on the second conductor that are near borders between the second conductor and the hole, andwherein the degree of coupling between the hole and the microstrip antenna, the inductance, and the capacitance are adjusted independently so that impedance can be matched with an arbitrary load impedance.
1 Assignment
0 Petitions
Accused Products
Abstract
A wireless communication device whose impedance can be matched with an arbitrary load impedance and that can be broadened in operating frequency band even when choosing an input impedance of an IC chip freely is not possible. The wireless communication device includes: a first conductor; a second conductor disposed substantially parallel to the first conductor; a hole formed in the second conductor; a capacitive coupling mechanism disposed adjacent to the hole; and a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function. The communication circuit is connected through the capacitive coupling mechanism to two sites on the second conductor that are near borders between the second conductor and the hole.
12 Citations
18 Claims
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1. A wireless communication device, comprising:
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a first conductor; a second conductor which is disposed substantially parallel to the first conductor; a hole which is formed in the second conductor; capacitive coupling means which are disposed adjacent to the hole; and a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function, wherein the hole contains a magnetic field coupling element magnetically coupled with a microstrip antenna consisting of the first conductor and the second conductor and an inductance element which forms inductance, wherein the communication circuit is connected through the capacitive coupling means to the two sites on the second conductor that are near borders between the second conductor and the hole, and wherein the degree of coupling between the hole and the microstrip antenna, the inductance, and the capacitance are adjusted independently so that impedance can be matched with an arbitrary load impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless communication device, comprising:
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a first conductor; a second conductor which is disposed substantially parallel to the first conductor; a hole which is formed in the second conductor; and a communication circuit which has at least one of a radio wave transmitting function and a radio wave receiving function, wherein the hole contains a magnetic field coupling element magnetically coupled with a microstrip antenna consisting of the first conductor and the second conductor and an inductance element which forms inductance, wherein the communication circuit is connected through capacitive coupling means to the two sites on the second conductor that are near borders between the second conductor and the hole, and wherein the degree of coupling between the hole and the microstrip antenna, and the inductance are adjusted independently, and the input reluctance of the microstrip antenna is adjusted so as to form a complex conjugate relationship with the input capacitance of the communication circuit so that impedance can be matched with an arbitrary load impedance. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification