发明名称 |
APPARATUS AND METHOD FOR ADJUSTING ENVELOPE SIGNAL DELAY IN ENVELOPE-TRACKING POWER AMPLIFIER |
摘要 |
Provided is an apparatus for adjusting an envelope signal delay in an envelope-tracking power amplifier. The apparatus includes: an envelope signal providing unit configured to provide an envelope signal; a variable negative group delay unit configured to adjust a group delay of the envelope signal received from the envelope signal providing unit and output the adjusted envelope signal; an envelope modulator configured to modulate the envelope signal outputted from the variable negative group delay unit; a group delay difference detecting unit configured to detect a group delay difference between the envelope signal which is outputted from the envelope signal providing unit and the envelope signal which is outputted from the envelope modulator; and a control signal generating unit configured to generate a control signal to control a group delay value of the variable negative group delay unit according to the group delay difference. |
申请公布号 |
US2016218679(A1) |
申请公布日期 |
2016.07.28 |
申请号 |
US201614996809 |
申请日期 |
2016.01.15 |
申请人 |
Electronics and Telecommunications Research Institute |
发明人 |
JANG Seung Hyun;PARK Bong Hyuk;RYU Nam Sik;KWON Dong Seung |
分类号 |
H03F1/02;H03F3/21;H03F3/19 |
主分类号 |
H03F1/02 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus for adjusting an envelope signal delay in an envelope-tracking power amplifier, the apparatus comprising:
an envelope signal providing unit configured to provide an envelope signal; a variable negative group delay unit configured to adjust a group delay of the envelope signal received from the envelope signal providing unit and output the adjusted envelope signal; an envelope modulator configured to modulate the envelope signal outputted from the variable negative group delay unit; a group delay difference detecting unit configured to detect a group delay difference between the envelope signal which is outputted from the envelope signal providing unit and the envelope signal which is outputted from the envelope modulator; and a control signal generating unit configured to generate a control signal to control a group delay value of the variable negative group delay unit according to the group delay difference. |
地址 |
Daejeon KR |