Patent ID: 8787964
Filing Date: 2014-07-22
Classification: H03F,H04B

Abstract:
1. A radio frequency front-end circuit, comprising: a balun, comprising: a receiver radio frequency amplifier having balanced input lines connected to said first node and said second node, said receiver radio frequency amplifier configured for receiving and amplifying said differential signal, wherein said receiver radio frequency amplifier comprises one or more active components; a radio frequency power amplifier having balanced output lines connected to said first node and said second node, said radio frequency power amplifier configured for providing an amplified differential signal to said balun, wherein said radio frequency power amplifier comprises one or more active components; and a selector circuit in communication with said receiver radio frequency amplifier and said radio frequency power amplifier, said selector circuit configured for activating said active components of said receiver radio frequency amplifier and deactivating said active components of said radio frequency power amplifier during said conversion of said single-ended signal to said differential signal, and vice versa during said conversion of said differential signal to said single-ended signal; whereby said balun is switchlessly and selectively coupled to said receiver radio frequency amplifier during said conversion of said single-ended signal to said differential signal and said radio frequency power amplifier during said conversion of said differential signal to said single-ended signal.