| 摘要 |
An amplifier arrangement comprises N amplifier stages (101 to 10N), wherein N is an integer equal or greater than four. The amplifier arrangement comprises a cascade of quarter wavelength transmission lines coupled between an output of an amplifier of a first amplifier stage (101) and an output node (15) of the amplifier arrangement, wherein the cascade comprises N-1 quarter wavelength transmission lines (111 to 11N-1). An amplifier of the Nth stage (10N) is coupled to the output node (15), and remaining amplifiers between the first and Nth stages (102 to 10N-1) coupled to successive junctions in the cascade of quarter wavelength transmission lines (111 to 11N-1). The amplifier arrangement is further configured such that the amplifier of the Nth stage (10N) is coupled to the output node (15) via a connecting quarter wavelength transmission line (131), and whereby each of the remaining amplifiers (103 to 10N-1) of the N-2 stages closest to the output node (15) is coupled by a respective connecting quarter wavelength transmission line (132 to 13N-2) to a respective junction of the cascade of quarter wavelength transmission lines. |
