Optimal phase condition determination method, antenna module, and communication system
AssigneeMurata Manufacturing Co., Ltd.
InventorKouichi Koshino
Life of this patent
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Abstract
A short-axis intensity is obtained under a plurality of phase conditions including different phase conditions of a high-frequency signal supplied to a plurality of antenna devices included in an array antenna. The short-axis intensity is a maximum value of a short-axis direction component of an electric field vector of a composite wave of radio waves radiated in a first direction from the respective antenna devices. An optimal phase condition of the high-frequency signal supplied to the plurality of antenna devices is determined in a manner such that the short-axis intensity of the composite wave is maximized.
Claims18
A method of determining an optimal phase condition that is performed by an antenna device, the method comprising:
- obtaining a short-axis intensity under a plurality of phase conditions including different phase conditions of a high-frequency signal supplied to a plurality of antenna devices included in an array antenna, the short-axis intensity being a maximum value of a short-axis direction component of an electric field vector of a composite wave of radio waves radiated in a first direction from the respective antenna devices;
- and
- determining an optimal phase condition of the high-frequency signal supplied to the plurality of antenna devices in a manner such that the short-axis intensity of the composite wave is maximized.
A method of determining an optimal phase condition that is performed by an antenna device, the method comprising:
- obtaining a long-axis intensity under a plurality of phase conditions including different phase conditions of a high-frequency signal supplied to a plurality of antenna devices included in an array antenna, the long-axis intensity being a maximum value of a long-axis direction component of an electric field vector of a composite wave of radio waves radiated in a first direction from the respective antenna devices;
- and
- determining an optimal phase condition of the high-frequency signal supplied to the plurality of antenna devices in a manner such that the long-axis intensity of the composite wave is maximized.
An antenna module comprising:
- an array antenna including a plurality of antenna devices configured to transmit and receive a circularly polarized wave;
- a high-frequency circuit configured to adjust phases between the antenna devices and supply a high-frequency signal to each of the plurality of antenna devices;
- and
- control circuitry storing an optimal phase condition list in which a phase condition of the high-frequency signal supplied to the plurality of antenna devices is associated with each of multiple directions seen from the array antenna, and configured to control, in accordance with a direction in which a radio wave is to be transmitted, the high-frequency circuit to operate under a phase condition associated with the direction, wherein
- the phase condition included in the optimal phase condition list is determined in a manner such that a short-axis intensity is maximized, the short-axis intensity being a maximum value of a short-axis direction component of an electric field vector of a composite wave of radio waves radiated in a direction associated with the phase condition from the plurality of antenna devices.
An antenna module comprising:
- an array antenna including a plurality of antenna devices configured to transmit and receive a linearly polarized wave;
- a high-frequency circuit configured to adjust phases between the antenna devices and supply a high-frequency signal to each of the plurality of antenna devices;
- and
- control circuitry storing an optimal phase condition list in which a phase condition of the high-frequency signal supplied to the plurality of antenna devices is associated with each of multiple directions seen from the array antenna, and configured to control, in accordance with a direction in which a radio wave is to be transmitted, the high- frequency circuit to operate under a phase condition associated with the direction, wherein
- the phase condition included in the optimal phase condition list is determined in a manner such that a long-axis intensity is maximized, the long-axis intensity being a maximum value of a long-axis direction component of an electric field vector of a composite wave of radio waves radiated in a direction associated with the phase condition from the plurality of antenna devices.
Dependencies are inferred from the claim text.