MIMOmatch-B IP portfolio
Name of the intellectual property portfolio: MIMOmatch-B.
Sectors: wireless communications.
Technical areas: MIMO radio transmission, wireless receiver using multiple antennas, wireless transmitter using multiple antennas.
| Title of the patent family |
Family |
| Antenna tuning apparatus for a multiport antenna array |
P54 |
| Method and device for radio reception using an antenna tuning apparatus and a plurality of antennas |
P55 |
| Method and device for radio reception using a plurality of antennas and a multiple-input-port and multiple-output-port amplifier |
P56 |
| Method and apparatus for automatically tuning an impedance matrix, and radio transmitter using this apparatus |
P57 |
This portfolio is no longer offered for sale, effective 11 June 2015. To obtain publicly available information on assignments, please click in the "Patent or PCT publ. No." column below.
This portfolio comprises the items listed in the following table. To obtain the latest relevant document, click in the "Item ID" column.
| Item ID |
Jurisdiction |
Application No. |
Filing date |
Patent or PCT publ. No. |
Issue Date |
Family |
| P54-A |
France |
12/02542 |
25 Sep 2012 |
FR 12/02542 |
16 Sep 2016 |
P54 |
| P54-B |
PCT |
PCT/IB2013/058423 |
10 Sep 2013 |
WO 2014/049475 |
N/A |
| P54-C |
USA |
14/314,148 |
25 June 2014 |
US 9,621,132 |
11 April 2017 |
| P55-A |
France |
12/02564 |
27 Sep 2012 |
FR 12/02564 |
9 Sep 2016 |
P55 |
| P55-B |
PCT |
PCT/IB2013/058574 |
16 Sep 2013 |
WO 2014/049486 |
N/A |
| P55-C |
USA |
14/326,090 |
8 July 2014 |
US 9,337,534 |
10 May 2016 |
| P56-A |
France |
13/00665 |
21 Mar 2013 |
FR 13/00665 |
15 July 2016 |
P56 |
| P56-B |
PCT |
PCT/IB2013/060481 |
28 Nov 2013 |
WO 2014/147458 |
N/A |
| P56-C |
USA |
14/535,704 |
7 Nov 2014 |
US 9,294,174 |
22 March 2016 |
| P57-A |
France |
13/00878 |
15 Apr 2013 |
FR 13/00878 |
9 Dec 2016 |
P57 |
| P57-B |
PCT |
PCT/IB2014/058933 |
12 Feb 2014 |
WO 2014/170766 |
N/A |
| P57-C |
USA |
14/552,179 |
24 Nov 2014 |
US 9,077,317 |
7 July 2015 |
Description.
The performance of a portable wireless transceiver using a multiport antenna array for MIMO reception and/or transmission, for instance a user equipment (UE) of an LTE wireless network, depends on the impedance matrix seen by the radio-frequency signal ports of its receiver and transmitter. Unfortunately, three phenomena can degrade the performance of the transceiver:
- coupling between the antennas, which corresponds to nonzero nondiagonal entries in the impedance matrix, prevents correct matching with conventional receiver and transmitter front-ends;
- correlation between the different channels corresponding to the different antennas degrades the MIMO channel capacity, a phenomenon related to, but distinct from, coupling between antennas;
- the value of the impedance matrix of the multiport antenna array varies, in particular when the frequency of operation is changed, or when the electromagnetic characteristics of the volume surrounding the antennas are modified, for instance by a movement of the body of the user, an effect referred to as “user interaction”, or “hand effect” or “finger effect”.
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The MIMOmatch-B portfolio provides means for automatically compensating coupling between the antennas, correlation between the channels or variations in the impedance matrix of the multiport antenna array caused by a variation in the frequency of operation and/or by the user interaction. The MIMOmatch-B portfolio can therefore be compared to the United States Patent number 8,102,830 assigned to Samsung Electronics Co., Ltd, and to the United States Patent number 8,059,058 assigned to Sony Ericsson Mobile Communications AB.
The map on the right shows the patents of the MIMOmatch-B portfolio (P54 to P57) and other inventions offered for sale by Tekcem. From right to left, the map shows inventions about signal transmission inside equipments, inventions related to radio transmission in general, and then inventions connected to physical layer (PHY) procedures of wireless networks. Time flows from the top to the bottom of the map, and "present" means "granted patents". In the map, a red arrow from A to B means that A is very likely to be used in B, a black arrow from A to B means that A might be used in B.
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The invention P54 relates to an antenna tuning apparatus for a multiport antenna array used for sending and/or receiving electromagnetic waves for radio communication. The antenna tuning apparatus comprises several adjustable impedance devices. A variation in the impedance matrix of the antenna array can be compensated with a new adjustment of the adjustable impedance devices. A short technical presentation of this invention is available at Section 1 of this page. Detailed results have been published in several peer-reviewed technical articles, which may be downloaded here.
The invention P55 relates to a method for radio reception, and to a receiver for radio communication using a plurality of antennas and an antenna tuning apparatus such as the antenna tuning apparatus of P54. In P55, the reactance of each adjustable impedance device of the antenna tuning apparatus is mainly determined by one or more tuning control signals obtained using one or more quantities representative of a channel matrix.
The invention P56 relates to a method for radio reception and a receiver for radio communication using a plurality of antennas and a multiple-input-port and multiple-output-port (MIPMOP) amplifier, like P34 of the MIMOmatch-A portfolio. In P56, the MIPMOP amplifier comprises adjustable impedance devices, the reactance of each adjustable impedance device being mainly determined by one or more tuning control signals obtained using one or more quantities representative of a channel matrix.
The invention P57 relates to a method and an apparatus for automatically tuning an impedance matrix, for instance the impedance matrix seen by the power amplifiers of a radio transmitter using a plurality of antennas simultaneously. This invention uses a multiple-input-port and multiple-output-port tuning unit, which may be an antenna tuning apparatus of P54. The invention P57 also discloses a radio transmitter using this apparatus.
The MIMOmatch-B portfolio is presented in this slide show. For a conference with technical experts, please contact us.