Electronic apparatus and method

An electronic apparatus that is capable of wireless power transfer to a power receiver that transmits a wireless signal, comprising:

• N antenna elements (N is a natural number greater than or equal to 3);
• N wireless signal processing circuitries configured to acquire analog signals, based on wireless signals received by the N antenna elements;
• a first signal processing circuitry configured to acquire a first digital signal, based on a first analog signal that is the analog signal acquired by a first wireless signal processing circuitry among the N wireless signal processing circuitries;
• a first selector configured to select one of second analog signals that are the analog signals acquired by (N−1) second wireless signal processing circuitries different from the first wireless signal processing circuitry among the N wireless signal processing circuitries;
• a second signal processing circuitry configured to acquire a second digital signal, based on the second analog signal selected by the first selector;
• and
• a controller configured to estimate a channel from the power receiver, based on the first digital signal and the second digital signal.