MIMOmatch-E IP portfolio

     The MIMOmatch-E portfolio consists of the inventions P63, P69 and P70 of Tekcem, which belong to the space "adaptive antenna tuning for a wireless device using several antennas simultaneously in the same frequency band". All inventions of this portfolio have the following characteristics:

• they use a plurality of tunable passive antennas and are suitable for user equipments (UEs) using MIMO transmission;
• they provide a fast automatic tuning over a broad frequency range, in a manner that complies with the requirements of standards typically applicable to MIMO wireless networks;
• they adaptively compensate the antenna interaction and the effects of the electromagnetic characteristics of the surroundings (including the user interaction), to deliver an optimal automatic tuning, even when antenna tuner losses are significant.

     The patent family P63 is about a method for automatically adjusting tunable passive antennas. Thus, it can be compared to the ninth embodiment of our invention P59 (disclosed in PCT/IB2015/051644 and US patent 9,680,510, assigned to Samsung Electronics Co., Ltd), which has the drawback that several excitations must be applied successively. This characteristic is not compatible with the requirements of all MIMO emission modes of standards typically applicable to MIMO wireless networks. In contrast, according to our invention P63, the excitations can be applied simultaneously. As a consequence, the method of P63 is compatible with the requirements of all MIMO emission modes of standards typically applicable to MIMO wireless networks.

     It is also interesting to compare the patent family P63 to our invention P61 (disclosed in PCT/IB2015/057131 and US application serial number 15/296,724, allowed on 17 July 2018 and assigned to Samsung Electronics Co., Ltd), given that both inventions use closed-loop control to tune an impedance matrix, by delivering tuning control signals to adjustable impedance devices (an "antenna control device" of P63 may be an adjustable impedance device, according to the prior art section of P63).

     The patent families P69 and P70 are each about a method for automatic adjustment of tunable passive antennas and a tuning unit (i.e., an antenna tuner). They combine an automatic adjustment of tunable passive antennas, with an automatic adjustment of a multiple-input-port and multiple-output-port antenna tuner similar to the one used in our invention P62 (disclosed in PCT/IB2015/057161 and US patent 9,966,930, assigned to Samsung Electronics Co., Ltd), to simultaneously obtain: an accurate tuning over a broad frequency range, and a fast automatic tuning. P69 uses open-loop control for the tunable passive antennas, whereas P70 uses closed-loop control for the tunable passive antennas.

     A detailed presentation of the MIMOmatch-E portfolio is posted here. The contents of the MIMOmatch-E portfolio is subject to change without notice.

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