 技術摘要 / Our Technology： |
一種射頻調變電路,包括:一第一相位多工器,具有一挑選器及複數相位追隨器,每一相位追隨器受控於二個準位互補之載波信號,且該挑選器受一調變序列控制而導通其中一相位追隨器;一轉換放大器,受該導通的相位追隨器控制,而切換地追隨該二載波信號的頻率與準位來調整輸出;及一功率放大器,對轉換放大器的輸出做功率加强而送出一相位調變信號。此外,一種發射器也被揭露。
A radio frequency modulating circuit of a transmitter includes a phase multiplexer including a plurality of phase followers each coupled to a selector and operating in accordance with a corresponding pair of complementary-level carrier signals received thereby. The selector is operable to enable conduction of one of the phase followers therethrough in response to a data sequence modulated from a data stream by a phase shift keying modulating circuit. A conversion amplifier is operable in accordance with the complementary-level carrier signals of a conducting one of the phase followers so as to output a phase-modulated output corresponding to the data stream. The phase-modulated output is amplified by a power amplifier and is transmitted through an antenna.
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| 專利簡述 / Intellectual Properties： |
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聯繫方式 / Contact： |
| 臺大產學合作總中心 / Center of Industry-Academia Collaboration, NTU |
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| Email：ordiac@ntu.edu.tw |
電話/Tel：02-3366-9945 |
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專利行銷平台