为了实现高效率的射频滤波功率放大器(filtering power amplifier),将基于悬置线的截线加载谐振器(stub-loaded resonator)带通滤波器的输入阻抗直接匹配到射频功放管CGH40010F的最佳基波阻抗和谐波阻抗,实现射频功率放大器与滤波器的...为了实现高效率的射频滤波功率放大器(filtering power amplifier),将基于悬置线的截线加载谐振器(stub-loaded resonator)带通滤波器的输入阻抗直接匹配到射频功放管CGH40010F的最佳基波阻抗和谐波阻抗,实现射频功率放大器与滤波器的联合设计,使滤波器同时实现了滤波、阻抗匹配和谐波控制的功能,避免了额外的输出匹配结构,实现了结构紧凑、具有滤波功能的高效率谐波控制型射频功放.实测结果表明在中心频率2.45GHz处,其输出功率约为40dBm,最大电源附加效率(power added efficiency)为76.9%,同时具有良好的滤波特性.展开更多
A digital predistorted class-F power amplifier （PA） using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access （ WC...A digital predistorted class-F power amplifier （PA） using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access （ WCDMA ） applications. Measurement results with the continuous wave （CW） signals indicate that the designed class-F PA achieves a peak power-added efficiency （PAE） of 75. 2% with an output power of 39.4 dBm. The adjacent channel power ratio （ACPR） of the designed PA after digital predistortion （DPD） decreases from -28. 3 and -27. 5 dBc to -51.9 and -54. 0 dBc, respectively, for a 4-carrier 20 MHz WCDMA signal with 7. 1 dB peak to average power ratio （PAPR）. The drain efficiency （DE） of the PA is 37. 8% at an average output power of 33. 3 dBm. The designed power amplifier can be aoolied in the WCDMA system.展开更多
基金The National Natural Science Foundation of China(No.60702163)the National Science and Technology Major Project(No.2010ZX03007-002-01,2011ZX03004-003)
文摘A digital predistorted class-F power amplifier （PA） using Cree GaN HEMT CGH40010 operating at 2. 12 GHz is presented to obtain high efficiency and excellent linearity for wideband code-division multiple access （ WCDMA ） applications. Measurement results with the continuous wave （CW） signals indicate that the designed class-F PA achieves a peak power-added efficiency （PAE） of 75. 2% with an output power of 39.4 dBm. The adjacent channel power ratio （ACPR） of the designed PA after digital predistortion （DPD） decreases from -28. 3 and -27. 5 dBc to -51.9 and -54. 0 dBc, respectively, for a 4-carrier 20 MHz WCDMA signal with 7. 1 dB peak to average power ratio （PAPR）. The drain efficiency （DE） of the PA is 37. 8% at an average output power of 33. 3 dBm. The designed power amplifier can be aoolied in the WCDMA system.
