A good conversion loss and a very high LO-to-RF isolation of 24-GHz single balanced mixer for RF front-end receiver
This work describes the design, analysis and fabrication of a 24-GHz microwave single balanced down-conversion mixer based on Schottky diode, hybrid ring coupler and a wide and deep stopband low-pass filter (LPF). The LPF is composed of three uniform defected ground structures along with a compensat...
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| Format: | Article |
| Language: | English |
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Maejo University
2011-10-01
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| Series: | Maejo International Journal of Science and Technology |
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| Online Access: | http://www.mijst.mju.ac.th/vol5/350-357.pdf |
| Summary: | This work describes the design, analysis and fabrication of a 24-GHz microwave single balanced down-conversion mixer based on Schottky diode, hybrid ring coupler and a wide and deep stopband low-pass filter (LPF). The LPF is composed of three uniform defected ground structures along with a compensated microstrip line. The selected frequencies are 24.125 GHz for RF signal and 24 GHz for LO signal. When the LO and RF signals are injected as 10 dBm and 0 dBm respectively, a conversion loss of 12.85 dB with an LO-to-RF isolation greater than 38 dB is obtained. The measured results agree well with the simulated results and the reported design. |
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| ISSN: | 1905-7873 |