本論文以模組的方式實現了一個超寬頻系統多頻帶發射機,操作在超寬頻頻譜第一模式Group A三個中心頻率。主要內容包含了超寬頻系統架構規劃及其相關電路例如混合被動電路及寬頻環形耦合器設計、單旁波帶混頻器設計。超寬頻系統多頻帶發射機模組的整合得以實現。 寬頻環形耦合器量測結果如下:S21為-3.86 dB;S31為-3.81 dB;在Group A三個中心頻率內的振幅差距小於0.2 dB;相位差距小於11°; 3 dB頻寬約為75%。 超寬頻系統多頻帶發射機模組成功地被實現。利用單旁波帶技術來實現的多頻帶超寬頻發射機系統量測結果如下:一.3432 MHz: 旁波帶抑制比為13.76 dB;載波抑制比為7.9 dB;使用75Ω寬頻環形耦合器旁波帶抑制比為18.5 dB;載波抑制比為6.1 dB; 使用50Ω寬頻環形耦合器旁波帶抑制比為18.63 dB;載波抑制比為6.27 dB。二.3960 MHz:旁波帶抑制比為19.34 dB;載波抑制比為3.12 dB;使用75Ω寬頻環形耦合器旁波帶抑制比為17.54 dB;載波抑制比為2.25 dB; 使用50Ω寬頻環形耦合器旁波帶抑制比為18.88 dB;載波抑制比為2.24 dB。三.4488 MHz: 旁波帶抑制比為32.12 dB;載波抑制比為1.48 dB;使用75Ω寬頻環形耦合器旁波帶抑制比為20.63 dB;載波抑制比為1.86 dB; 使用50Ω寬頻環形耦合器旁波帶抑制比為17.55 dB;載波抑制比為1.44 dB。 The thesis realized an Ultra-Wideband system multi-band transmitter module which operates at three frequencies of UWB system Mode 1 Group A. The architecture of UWB system and its related circuits such as hybrid passive circuits and wideband ratrace design; single sideband mixer design are the main research areas of the thesis. The integration of UWB system multi-band transmitter module are then implemented. The measured results of wideband ratrace are achieved as follows; S21 is -3.86 dB; S31 is -3.81 dB. The amplitude difference is less than 0.2dB and the phase difference is less than 11° in the three frequencies. The 3-dB bandwidth is achieved as high as 75%. The integration of UWB system multi-band transmitter module has been successfully implemented. The measured results of multi-band UWB transmitter module realized by single sideband method are obtained as follows. Sideband rejection ratio is 13.76dB and carrier rejection ratio is 7.9dB at the 3432MHz frequency. Sideband rejection ratio is 18.5dB and carrier rejection ratio is 6.1dB with 75Ω wideband ratrace at the 3432MHz frequency. Sideband rejection ratio is 18.63dB and carrier rejection ratio is 6.27dB with 50Ω wideband ratrace at the 3432MHz frequency. Sideband rejection ratio is 19.34dB and carrier rejection ratio is 3.12dB at the 3960MHz frequency. Sideband rejection ratio is 17.54dB and carrier rejection ratio is 2.25dB with 75Ω wideband ratrace at the 3960MHz frequency. Sideband rejection ratio is 18.88dB and carrier rejection ratio is 2.24dB with 50Ω wideband ratrace at the 3960MHz frequency. Sideband rejection ratio is 32.12dB and carrier rejection ratio is 1.48dB at the 4488MHz frequency. Sideband rejection ratio is 20.63dB and carrier rejection ratio is 1.86dB with 75Ω wideband ratrace at the 4488MHz frequency. Sideband rejection ratio is 17.55dB and carrier rejection ratio is 1.44dB with 50Ω wideband ratrace at the 4488MHz frequency.
