<p>An amplifier (20) includes a main amplifier circuit (22) and at least one auxiliary amplifier circuit (24). Portions of an RF signal (26) to be amplified are delivered to the main (22) and auxiliary (24) amplifiers. The auxiliary amplifier circuit (24) is selectively operable to operate in combination with the main amplifier circuit (22), such as based on the level of the RF signal (26). At least one hybrid coupler circuit (44) has input ports coupled with outputs of the main amplifier circuit (22) and auxiliary amplifier circuit (24). The hybrid coupler circuit (44) is operable to combine amplifier circuit output signals at a coupler first output port (29). A coupler second output port (28) is terminated with one of an electrical short and an electrical open circuit.</p>
申请公布号
EP1609239(B1)
申请公布日期
2010.07.21
申请号
EP20040758381
申请日期
2004.03.26
申请人
ANDREW AG
发明人
LOUIS, EDWARD, VINCENT;MYER, ROBERT, E.;LOH, KOON, WHYE;ROOT, LOREN, FRANCIS