Patent ID: 8390382
Filing Date: 2013-03-05
Classification: H01L,H03F

Abstract:
1. A power amplifier circuit, comprising: a power amplifying unit configured to receive power from an outside and to amplify an input signal; a coupling unit having an isolation unit including the first power line has an inductor configured to block signal interference generated in a predetermined frequency band, the power amplifying unit, the coupling unit, and the isolation unit are configured as an integrated circuit on a single substrate having a predetermined mounting area, the high frequency band power coupler and the low frequency band power coupler of the coupling unit are disposed on the substrate to be spaced apart from each other by a predetermined distance, the first power line and the second power line of the isolation unit are disposed to be spaced apart from each other and within the distance between the high frequency band power coupler and the low frequency band power coupler, the high frequency band power coupler comprises the low frequency band power coupler comprises the power amplifier circuit further comprises a shielding unit having a conductive pattern which is