本實驗以RO3003基板設計與實現一個操作於12GHz之陣列雷達模組，包含混頻器、濾波器、衰減器、移相器、功率放大器。一開始採用陶瓷基板製程實現電路，但因濺鍍機機台在陶瓷基板製程技術尚未成熟，故以RO3003基板實現。RO3003基板介電常數=3，厚度=10mil，金屬層高度=0.1mil，介電常數損耗約=0.00136。
　　濾波器中心頻率12GHz，通過損耗S21=9.08dB，迴返損耗S11=11.1dB。混頻器是以LO=9.6GHz，輸入功率=10dBm，加上IF=2.4GHz，輸入功率=0dBm，偏壓於VDS=4V，IDS=25mA，得到RF=12GHz，輸出功率=11dBm。衰減器操作於12GHz，偏壓0~1.2V，通過損耗S21有8.301dB的衰減。移相器中心頻率12GHz，偏壓0~8V時有82.51˚之相位差。功率放大器操作於12GHz，偏壓VDS=4V，IDS=25mA下，通過損耗S21=3.762 dB，迴返損耗S11=7.056 dB，但於11.71GHz時有較好之增益，通過損耗S21=6.831 dB，迴返損耗S11=7.110 dB。
　　整體量測結果：頻譜分析於高頻RF 12GHz輸出功率=-19dBm，LO 9.6GHz輸出功率=-21dBm，IF 2.4GHz輸出功率=-25dBm。相位於12GHz控制偏壓0~8V通過損耗位移度數從-170.0˚~-9.64˚，共位移160.36˚。衰減損耗控制偏壓0~1.2V通過損耗從20.217dB衰數到27.210dB共衰數6.993dB。

　　This research is to design and realize a 12GHz having phase shifting and attenuating function array radar module, it includes mixer, filter, attenuator, phase shifter and power amplifier. We use the ceramic board process to realize the circuit in the beginning, but the sputter process in ceramic board isn’t mature yet, so we complete the circuit in RO3003 board. The dielectric constant is equal to 3, the board thickness is equal 10mil, the metal thickness is equal to 0.1mil, and the dielectric loss is around 0.00136.
　　The filter operates at 12GHz, the insertion loss S21 is equal to 9.08dB, and the reflection loss S11 is equal to 11.1dB. The mixer LO input frequency is equal to 9.6GHz, input power is equal to10dBm, IF input frequency is equal to2.4GHz, input power is equal to 0dBm, the bias VDS is equal to 4V, and IDS is equal to 25mA. Then we can get RF frequency equal to 12GHz, and output power equal to -11dBm. The attenuator operates at 12GHz, bias voltage range is 0~1.2V, insertion loss S21 has attenuation equal to 8.301dB. The phase shifter center frequency is equal to 12GHz, bias voltage range is 0~8V, which has the phase shift equal to 82.51˚. The power amplifier operates at 12GHz, and the bias VDS is equal to 4V，IDS is equal to 25mA, insertion loss S21 is equal to 3.762 dB, reflection loss S11 is equal to 7.056 dB; but it has better gain at 11.71GHz, insertion loss S21 is equal to 6.831 dB, reflection loss S11 is equal to 7.110 dB.
　　The total measurement result: frequency spectrum analysis at RF 12GHz output power is equal to -19dBm, LO 9.6GHz output power is equal to -21dBm, if 2.4GHz output power is equal to -25dBm. If controlling the phase shifter bias voltage range within 0~8V, we can get the insertion loss phase shift degree at 12GHz from -170.0˚~-9.64˚, and then the total shifting degree is equal to 160.36˚. If we control the attenuator bias voltage range within 0~1.2V, the insertion loss from -20.217dB to -27.210dB, and then the total will be 6.993dB.

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