Title:
ANTENNA DEVICE AND ANTENNA EXCITATION METHOD
Document Type and Number:
WIPO Patent Application WO/2018/135531
Kind Code:
A1
Abstract:
This antenna device is provided with: an excitation distribution calculation unit (13) which calculates the excitation distribution W1(t) of a communication beam consisting of radio waves transmitting a communication signal d(t), and the excitation distribution W2(t) of an interference beam consisting of radio waves transmitting an interference signal i(t), such that the sum of the squares of the excitation amplitude of the communication beam and the excitation amplitude of the interference beam are the same in each of multiple element antennas (3-1) to (3-K); and an excitation distribution synthesis unit (25) which synthesizes the communication beam excitation distribution W1(t) and the interference beam excitation distribution W2(t) calculated by the excitation distribution calculation unit (13) and outputs a synthesized excitation distribution E(t). A phase control unit (30) controls the phase of a carrier wave imparted to the multiple element antennas (3-1) to (3-K) in accordance with the synthesized excitation distribution E(t) outputted from the excitation distribution synthesis unit (25).
Inventors:
KURIYAMA TASUKU (JP)
FUKASAWA TORU (JP)
FUKASAWA TORU (JP)
Application Number:
PCT/JP2018/001221
Publication Date:
July 26, 2018
Filing Date:
January 17, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04B7/06; H01Q3/26
Foreign References:
| JP6042045B1 | 2016-12-14 | |||
| JP2013093665A | 2013-05-16 | |||
| JP2015177494A | 2015-10-05 | |||
| JP2014155050A | 2014-08-25 |
Other References:
KURIYAMA, TASUKU ET AL.: "A Study of Limited Communication Area for Directional Modulation Using Active Phased Array Antenna with Sum-Difference pattern combining method", IEICE TECH. REP., vol. 116, no. 397, 12 January 2017 (2017-01-12), pages 135 - 140
KURIYAMA, TASUKU ET AL.: "Limited Communication Area for Directional Modulation Using Active Phased Array Antenna: Discussion", PROCEEDINGS OF THE 2016 IEICE SOCIETY CONFERENCE (1), vol. 1, 6 September 2016 (2016-09-06), pages 130
DING Y. ET AL.: "A far-field pattern separation approach for the synthesis of directional modulation transmitter arrays", 2014 XXXIST URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS) ,, 16 August 2014 (2014-08-16), XP032663682
DING Y. ET AL.: "Directional modulation far-field pattern separation synthesis approach", IET MICROWAVES, ANTENNAS & PROPAGATION, vol. 9, no. 1, 29 December 2014 (2014-12-29), pages 41 - 48, XP006050755
M. P. DALY: "Directional Modulation Technique for Phased Arrays", IEEE TRANS. ANTENNAS PROPAGAT., vol. 57, 2009, pages 2633 - 2640, XP011270166, DOI: doi:10.1109/TAP.2009.2027047
See also references of EP 3540978A4
KURIYAMA, TASUKU ET AL.: "Limited Communication Area for Directional Modulation Using Active Phased Array Antenna: Discussion", PROCEEDINGS OF THE 2016 IEICE SOCIETY CONFERENCE (1), vol. 1, 6 September 2016 (2016-09-06), pages 130
DING Y. ET AL.: "A far-field pattern separation approach for the synthesis of directional modulation transmitter arrays", 2014 XXXIST URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS) ,, 16 August 2014 (2014-08-16), XP032663682
DING Y. ET AL.: "Directional modulation far-field pattern separation synthesis approach", IET MICROWAVES, ANTENNAS & PROPAGATION, vol. 9, no. 1, 29 December 2014 (2014-12-29), pages 41 - 48, XP006050755
M. P. DALY: "Directional Modulation Technique for Phased Arrays", IEEE TRANS. ANTENNAS PROPAGAT., vol. 57, 2009, pages 2633 - 2640, XP011270166, DOI: doi:10.1109/TAP.2009.2027047
See also references of EP 3540978A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
Download PDF:
Previous Patent: TIRE TREAD RUBBER COMPOSITION AND PNEUMATIC TIRE
Next Patent: MEASURING DEVICE, MEASURING SYSTEM, MEASURING METHOD AND PROGRAM
Next Patent: MEASURING DEVICE, MEASURING SYSTEM, MEASURING METHOD AND PROGRAM