Subharmonic Mixers and Frequency Doublers for 77GHz Application
碩士 === 國立交通大學 === 電信工程系所 === 92 === Subharmonic mixers and frequency doublers for 77 GHz application are presented in this thesis. Subharmonic mixers incorporating an antiparallel diode pair and an ulra-broadband rat race ring are designed using coplanar waveguide (CPW) technology on a ceramic subst...
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| Format: | Others |
| Language: | en_US |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/69e92k |
| Summary: | 碩士 === 國立交通大學 === 電信工程系所 === 92 === Subharmonic mixers and frequency doublers for 77 GHz application are presented in this thesis. Subharmonic mixers incorporating an antiparallel diode pair and an ulra-broadband rat race ring are designed using coplanar waveguide (CPW) technology on a ceramic substrate. The mixers are designed to operate mainly at an RF of 77 GHz and a fixed IF of 500 MHz. Of several mixer configurations measured, the best results reveal a minimum conversion loss of 12.8 dB at an RF of 95 GHz.
Frequency doublers using single diode and HEMT are fabricated by hybrid MIC in CPW and MMIC in microstrip process respectively. The frequency doublers are designed to operate at an input of 38.5 GHz and an output of 77 GHz. The single diode doubler exhibits a minimum conversion loss of 12.8 dB at 75 GHz, while HEMT frequency doubler exhibits a minimum conversion loss of 5.96 dB at 77 GHz and a maximum output power of 6.04 dBm at 77GHz.
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