Mobile phone and related method for matching antenna with different matching circuits for different bands

A method for adjusting properties of a mobile phone, the mobile phone comprising:

• a baseband circuit for generating a communication signal;
• a matching circuit electrically connected to the baseband circuit for adjusting a phase or a magnitude between a current and a voltage of the communication signal to generate a corresponding transmitting signal, wherein the matching circuit has at least an electrical element, the phase or the magnitude between the current and the voltage of the communication signal being changed as the element parameter of the electrical element is changed;
• an antenna for wirelessly broadcasting the transmitting signal to generate a corresponding receiving signal;
• a receiving circuit for transmitting the receiving signal to the baseband circuit;
• and
• a duplexer electrically connected between the matching circuit and the antenna for transmitting the transmitting signal to the antenna and for transmitting the receiving signal to the receiving circuit;
• the method comprising:
• changing the element parameter of the electrical element of the matching circuit so as to change the phase or the magnitude between the current and the voltage of the communication signal without changing the phase or the magnitude between the current and the voltage of the receiving signal, such that the field pattern of the antenna for signal-transmitting in a wireless manner remains as that of the antenna for signal-receiving in a wireless manner.

A mobile phone comprising:

• a baseband circuit for generating a first communication signal and a second communication signal;
• a first power controller electrically connected to the baseband circuit for adjusting power of the first communication signal;
• a first matching circuit electrically connected to the first power controller for receiving the first communication signal from the first power controller, and for adjusting a phase or a magnitude between a current and a voltage of the first communication signal to generate a corresponding first transmitting signal;
• a second power controller electrically connected to the baseband circuit for adjusting power of the second communication signal to generate a corresponding second transmitting signal;
• an antenna for wirelessly broadcasting the first transmitting signal and the second transmitting signal;
• a diplexer having an output port electrically connected to the antenna, and two input ports respectively electrically connected to the first matching circuit and the second power controller, the diplexer being used to transmit the first transmitting signal and the second transmitting signal to the antenna;
• wherein the first matching circuit is capable of changing the phase or the magnitude between the current and the voltage of the first communication signal without changing the phase or the magnitude between the current and the voltage of the second transmitting signal, such that the field pattern of the antenna for transmitting the first transmitting signal in a wireless manner is not affected as that of the antenna for transmitting the second transmitting signal in a wireless manner.

A method for adjusting properties of a mobile phone, the mobile phone comprising:

• a baseband circuit for generating a first communication signal and a second communication signal;
• a first power controller electrically connected to the baseband circuit for adjusting power of the first communication signal;
• a first matching circuit electrically connected to the first power controller for receiving the first communication signal from the first power controller, and for adjusting a phase or a magnitude between a current and a voltage of the first communication signal to generate a corresponding first transmitting signal;
• wherein the first matching circuit has at least an electrical element;
• the phase or the magnitude between the current and the voltage of the first communication signal being changed as the element parameter of the electrical element is changed;
• a second power controller electrically connected to the baseband circuit for adjusting power of the second communication signal to generate a corresponding second transmitting signal;
• an antenna for wirelessly broadcasting the first transmitting signal and the second transmitting signal;
• a diplexer having an output port electrically connected to the antenna, and two input ports respectively electrically connected to the first matching circuit and the second power controller, the diplexer being used to transmit the first transmitting signal and the second transmitting signal to the antenna;
• the method comprising:
• changing the element parameter of the electrical element of the first matching circuit, such that the first matching circuit is capable of changing the phase or the magnitude between the current and the voltage of the first communication signal without changing the phase or the magnitude between the current and the voltage of the second transmitting signal, in which the field pattern of the antenna for transmitting the first transmitting signal in a wireless manner is not affected as that of the antenna for transmitting the second transmitting signal in a wireless manner.