Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms
A novel photonic scheme based on parallel dual-drive Mach-Zehnder modulator (DDMZM) to generate flexible and switchable multi-band linearly frequency modulated (LFM) microwave waveforms is proposed. In the scheme, a radio frequency (RF) local oscillator is applied to one arm of DDMZM1 and DDMZM2 wit...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/9982388/ |
| _version_ | 1811197562748665856 |
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| author | Zhaoying Qu Jianxin Ma |
| author_facet | Zhaoying Qu Jianxin Ma |
| author_sort | Zhaoying Qu |
| collection | DOAJ |
| description | A novel photonic scheme based on parallel dual-drive Mach-Zehnder modulator (DDMZM) to generate flexible and switchable multi-band linearly frequency modulated (LFM) microwave waveforms is proposed. In the scheme, a radio frequency (RF) local oscillator is applied to one arm of DDMZM1 and DDMZM2 with a relative phase of 90°, respectively; while a single-chirp signal to the other arms of the two DDMZMs with a tunable relative phase shift. The generated two independently lightwaves are detected by a balanced photodetector (BPD) and the switchable multi-band LFM signals are generated flexibly. By appropriately adjusting the phase difference <italic>θ</italic>, dual-band complementary LFM signals and multi-band LFM signals can be easily switched. Based on simulations, the dual-band complementary LFM waveforms centered at 10 GHz and 30 GHz are generated with a doubled bandwidth (3.2 GHz) as <italic>θ =</italic> 0, the multi-band LFM microwave waveforms with center frequency-bandwidth of 10 GHz-1.6 GHz, 20 GHz-6.4 GHz and 30 GHz-1.6 GHz, covering X, K and Ka bands, are simultaneously obtained with flatness of 1.9 dB as <italic>θ</italic> = π/2 or 3π/2. Their autocorrelation results manifest high peak-to-sidelobe ratio (PSR) about 14 dB, and good pulse compression capabilities. The presented scheme features its compact structure, easiness in switching control, as well as larger bandwidth, and has potential applications in multifunctional radars. |
| first_indexed | 2024-04-12T01:17:04Z |
| format | Article |
| id | doaj.art-de796f5d18d847649e7b80de68c3334a |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-04-12T01:17:04Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-de796f5d18d847649e7b80de68c3334a2022-12-22T03:53:56ZengIEEEIEEE Photonics Journal1943-06552022-01-011461910.1109/JPHOT.2022.32267419982388Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave WaveformsZhaoying Qu0Jianxin Ma1https://orcid.org/0000-0002-3605-7071State Key Laboratory of Information Photonics and Optical Communications, and Beijing Key Laboratory of Space-Ground Interconnection and Convergence, School of Electronics Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory of Information Photonics and Optical Communications, and Beijing Key Laboratory of Space-Ground Interconnection and Convergence, School of Electronics Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaA novel photonic scheme based on parallel dual-drive Mach-Zehnder modulator (DDMZM) to generate flexible and switchable multi-band linearly frequency modulated (LFM) microwave waveforms is proposed. In the scheme, a radio frequency (RF) local oscillator is applied to one arm of DDMZM1 and DDMZM2 with a relative phase of 90°, respectively; while a single-chirp signal to the other arms of the two DDMZMs with a tunable relative phase shift. The generated two independently lightwaves are detected by a balanced photodetector (BPD) and the switchable multi-band LFM signals are generated flexibly. By appropriately adjusting the phase difference <italic>θ</italic>, dual-band complementary LFM signals and multi-band LFM signals can be easily switched. Based on simulations, the dual-band complementary LFM waveforms centered at 10 GHz and 30 GHz are generated with a doubled bandwidth (3.2 GHz) as <italic>θ =</italic> 0, the multi-band LFM microwave waveforms with center frequency-bandwidth of 10 GHz-1.6 GHz, 20 GHz-6.4 GHz and 30 GHz-1.6 GHz, covering X, K and Ka bands, are simultaneously obtained with flatness of 1.9 dB as <italic>θ</italic> = π/2 or 3π/2. Their autocorrelation results manifest high peak-to-sidelobe ratio (PSR) about 14 dB, and good pulse compression capabilities. The presented scheme features its compact structure, easiness in switching control, as well as larger bandwidth, and has potential applications in multifunctional radars.https://ieeexplore.ieee.org/document/9982388/Microwave photonicsswitchable radar signalslinearly frequency modulated microwave waveform |
| spellingShingle | Zhaoying Qu Jianxin Ma Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms IEEE Photonics Journal Microwave photonics switchable radar signals linearly frequency modulated microwave waveform |
| title | Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms |
| title_full | Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms |
| title_fullStr | Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms |
| title_full_unstemmed | Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms |
| title_short | Photonic-Assisted Generation of Flexible and Switchable Multi-Band Linearly Frequency Modulated Microwave Waveforms |
| title_sort | photonic assisted generation of flexible and switchable multi band linearly frequency modulated microwave waveforms |
| topic | Microwave photonics switchable radar signals linearly frequency modulated microwave waveform |
| url | https://ieeexplore.ieee.org/document/9982388/ |
| work_keys_str_mv | AT zhaoyingqu photonicassistedgenerationofflexibleandswitchablemultibandlinearlyfrequencymodulatedmicrowavewaveforms AT jianxinma photonicassistedgenerationofflexibleandswitchablemultibandlinearlyfrequencymodulatedmicrowavewaveforms |