Multi-transmission system structure and mobile terminal employing same

A mobile terminal comprising:

• a first power amplifier configured to amplify and output a first signal of a 5G communication system;
• a first antenna connected to the first power amplifier and configured to transmit the first signal amplified and output from the first power amplifier as a first transmission signal;
• a second power amplifier configured to amplify and output a second signal of the 5G communication system;
• a second antenna connected to the second power amplifier and configured to transmit the second signal amplified and output from the second power amplifier as a second transmission signal;
• and
• a power controller connected to the first power amplifier and the second power amplifier and including a common voltage booster configured to provide a supply voltage to both of the first power amplifier and the second power amplifier at a same timing,
• wherein a timing error between the first signal output by the first power amplifier and the second signal output by the second power amplifier is controlled to be equal to or shorter than a time section associated with a symbol duration of the 5G communication system.

A mobile terminal comprising:

• a first power amplifier configured to amplify and output a first signal;
• a second power amplifier configured to amplify and output a second signal;
• a common voltage booster configured to provide a supply voltage to the first power amplifier and the second power amplifier;
• a diode provided between the common voltage booster and the first power amplifier and between the common voltage booster and the second power amplifier to provide isolation between the first power amplifier and the second power amplifier;
• and
• a controller configured to control the first power amplifier and the second power amplifier to operate in any one of the 5G communication system and the 4G communication system.