Method and apparatus for reducing a channel deviation in a mobile communication terminal
AssigneeSamsung Electronics Co., Ltd.
InventorHyun-Sik Cha
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Abstract
A transmitting apparatus and a transmitting method for improving a channel deviation in a mobile communication terminal are provided. The transmitting apparatus includes a power amplifier for amplifying a transmitting signal by a predetermined level and outputting an amplified transmitting signal, a controller for outputting a signal to control a variable capacitor according to a channel of the transmitting signal and a phase transition unit for varying each capacitance value according to a control of the controller and transiting a phase of a signal outputted from the power amplifier.
Claims12
An apparatus for reducing a channel deviation in a mobile communication terminal, comprising:
- an amplifier for amplifying a transmitting signal by a predetermined level and outputting the amplified signal via an antenna;
- a phase shifter having a plurality of capacitors, each capacitance value of the plurality of variable capacitors is selectively varied to phase shift the signal outputted from the amplifier.
- a controller for outputting a control signal to control the plurality of variable capacitors to perform an impedance matching between the output of the amplifier and the antenna.
A method for reducing a channel deviation in a mobile communication terminal, the method comprising:
- amplifying a transmitting signal by a predetermined level and outputting the amplified transmitting signal;
- determining a capacitance value of a variable capacitor from a predetermined table based on a channel information of the transmitting signal;
- and,
- performing a phase shift in the amplified transmitting signal by controlling the variable capacitor according to the determined capacitance value.
Dependencies are inferred from the claim text.