COMMUNICATION TERMINAL AND TRANSMITTER SHIELDING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To enable reduction of deterioration of a communication quality by suppressing an increase in a circuit board having a high frequency power amplifier and in a board shielding case. SOLUTION: When a communication terminal includes a high frequency transmitter 11 for generating a high frequency transmission signal and a high frequency power amplifier 14 for amplifying the transmission signal generated by the high frequency transmitter 11, a shield case 20 of such a shape as to cover the high frequency transmitter 11 and the high frequency power amplifier 14 is provided on a substrate 10 having the high frequency transmitter 11 and the high frequency power amplifier 14 arranged thereon, and an unwanted radiation blocking means 23 for blocking propagation of a high frequency current generated by unwanted radiation from the high frequency power amplifier 14 to the high frequency transmitter 11 is formed on the case 20. COPYRIGHT: (C)2008,JPO&INPIT