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Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the <t>electrical</t> spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.
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Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the <t>electrical</t> spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.
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Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the <t>electrical</t> spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.
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Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the <t>electrical</t> spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.
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Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the electrical spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.

Journal: Micromachines

Article Title: Photonics-Based Multifunction System for Radar Signal Transmit-Receive Processing and Frequency Measurement

doi: 10.3390/mi15091080

Figure Lengend Snippet: Schematic diagram of the proposed multifunctional microwave photonic system. The optical spectrum of ( a ) the CS-DSB and ( b ) the RF signal to be test, ( c ) the electrical spectrum of the frequency-doubled LFM signal after PD2, ( d ) the optical spectrum of self-interference cancellation. LD: laser diode; MZM: Mach–Zehnder modulator; DPMZM: dual-parallel Mach–Zehnder modulator; AWG: any waveform generator; EA: electrical amplifier; EATT: electrical amplitude tunable attenuator; ETDL: electrical time delay line; OBPF: optical bandpass filter; LNA: low noise amplifier; PD: photodetector.

Article Snippet: The PD2 output electrical signal is divided into two branches with a 3 dB electrical coupler (Marki, PD-0440, Beijing, China).

Techniques:

The output spectrum when the length of the electrical cable is ( a ) 1 m, ( b ) 2 m and ( c ) 3 m.

Journal: Micromachines

Article Title: Photonics-Based Multifunction System for Radar Signal Transmit-Receive Processing and Frequency Measurement

doi: 10.3390/mi15091080

Figure Lengend Snippet: The output spectrum when the length of the electrical cable is ( a ) 1 m, ( b ) 2 m and ( c ) 3 m.

Article Snippet: The PD2 output electrical signal is divided into two branches with a 3 dB electrical coupler (Marki, PD-0440, Beijing, China).

Techniques:

The output spectrum with or without interference cancellation when the length of the electrical cable is ( a ) 1 m, ( b ) 2 m, and ( c ) 3 m.

Journal: Micromachines

Article Title: Photonics-Based Multifunction System for Radar Signal Transmit-Receive Processing and Frequency Measurement

doi: 10.3390/mi15091080

Figure Lengend Snippet: The output spectrum with or without interference cancellation when the length of the electrical cable is ( a ) 1 m, ( b ) 2 m, and ( c ) 3 m.

Article Snippet: The PD2 output electrical signal is divided into two branches with a 3 dB electrical coupler (Marki, PD-0440, Beijing, China).

Techniques: