Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression
Abstract This study presents a microwave oscillator in which an innovative hybrid microstrip and substrate integrated waveguide filter is proposed for phase noise reduction. By virtue of equivalent circuit, the specific topology of this filter is clearly revealed and verified by both the simulation...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-06-01
|
| Series: | IET Microwaves, Antennas & Propagation |
| Online Access: | https://doi.org/10.1049/mia2.12053 |
| _version_ | 1811338198442311680 |
|---|---|
| author | Jun Xu Xiuqiang Yang Yang Chen Yu Cao Fei Xiao |
| author_facet | Jun Xu Xiuqiang Yang Yang Chen Yu Cao Fei Xiao |
| author_sort | Jun Xu |
| collection | DOAJ |
| description | Abstract This study presents a microwave oscillator in which an innovative hybrid microstrip and substrate integrated waveguide filter is proposed for phase noise reduction. By virtue of equivalent circuit, the specific topology of this filter is clearly revealed and verified by both the simulation and the experiment. It can realize a third‐order elliptic bandpass response with two transmission zeros near the passband. Specific phase response can be formed, in which a high group delay can be achieved within a narrow frequency range around the centre frequency. This feature makes the filter performance very flexible for its application in microwave oscillator, and then reduces its phase noise. For demonstration, an oscillator example at 9.0 GHz was deigned, fabricated and measured. The measured phase noise at 100 kHz away from the oscillation frequency is as low as −120.06 dBc/Hz. Furthermore, the proposed oscillator is featured by greater than 60 dB second‐harmonic suppression and at least the third harmonic is suppressed. |
| first_indexed | 2024-04-13T18:06:29Z |
| format | Article |
| id | doaj.art-66a92b8eb2ac471ab392c450fd0c2d71 |
| institution | Directory Open Access Journal |
| issn | 1751-8725 1751-8733 |
| language | English |
| last_indexed | 2024-04-13T18:06:29Z |
| publishDate | 2021-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Microwaves, Antennas & Propagation |
| spelling | doaj.art-66a92b8eb2ac471ab392c450fd0c2d712022-12-22T02:36:03ZengWileyIET Microwaves, Antennas & Propagation1751-87251751-87332021-06-0115767568210.1049/mia2.12053Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppressionJun Xu0Xiuqiang Yang1Yang Chen2Yu Cao3Fei Xiao4School of Electronic Science and Engineering University of Electronic Science and Technology of China Qingshuihe Campus Chengdu P. R. ChinaChengdu Seekon Microwave Communications CO. LTD Chengdu P. R. ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Qingshuihe Campus Chengdu P. R. ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Qingshuihe Campus Chengdu P. R. ChinaSchool of Electronic Science and Engineering University of Electronic Science and Technology of China Qingshuihe Campus Chengdu P. R. ChinaAbstract This study presents a microwave oscillator in which an innovative hybrid microstrip and substrate integrated waveguide filter is proposed for phase noise reduction. By virtue of equivalent circuit, the specific topology of this filter is clearly revealed and verified by both the simulation and the experiment. It can realize a third‐order elliptic bandpass response with two transmission zeros near the passband. Specific phase response can be formed, in which a high group delay can be achieved within a narrow frequency range around the centre frequency. This feature makes the filter performance very flexible for its application in microwave oscillator, and then reduces its phase noise. For demonstration, an oscillator example at 9.0 GHz was deigned, fabricated and measured. The measured phase noise at 100 kHz away from the oscillation frequency is as low as −120.06 dBc/Hz. Furthermore, the proposed oscillator is featured by greater than 60 dB second‐harmonic suppression and at least the third harmonic is suppressed.https://doi.org/10.1049/mia2.12053 |
| spellingShingle | Jun Xu Xiuqiang Yang Yang Chen Yu Cao Fei Xiao Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression IET Microwaves, Antennas & Propagation |
| title | Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression |
| title_full | Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression |
| title_fullStr | Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression |
| title_full_unstemmed | Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression |
| title_short | Low phase noise microwave oscillator with greater than 60 dB second‐harmonic suppression |
| title_sort | low phase noise microwave oscillator with greater than 60 db second harmonic suppression |
| url | https://doi.org/10.1049/mia2.12053 |
| work_keys_str_mv | AT junxu lowphasenoisemicrowaveoscillatorwithgreaterthan60dbsecondharmonicsuppression AT xiuqiangyang lowphasenoisemicrowaveoscillatorwithgreaterthan60dbsecondharmonicsuppression AT yangchen lowphasenoisemicrowaveoscillatorwithgreaterthan60dbsecondharmonicsuppression AT yucao lowphasenoisemicrowaveoscillatorwithgreaterthan60dbsecondharmonicsuppression AT feixiao lowphasenoisemicrowaveoscillatorwithgreaterthan60dbsecondharmonicsuppression |