A Novel Approach to Photonic Generation and Modulation of Ultra-Wideband Pulses

AbstractA novel approach to photonic generation of ultra-wideband (UWB) signals is proposed in this paper. The proposed signal generator is capable of generating UWB doublet pulses with flexible reconfigurability, and many different pulse modulation formats, including the commonly used pulse-position modulation (PPM) and bi-phase modulation (BPM) can be realized. Moreover, the photonic UWB pulse generator is capable of generating UWB signals with a tunable spectral notch-band, which is desirable to realize the interference avoidance between UWB and other narrow band systems, such as Wi-Fi. A mathematical model describing the proposed system is developed and the generation of UWB signals with different modulation formats is demonstrated via computer simulations.

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Photonic Generation and Wireless Transmission of Different Pulse Modulation Formats for High Speed Impulse Radio Ultrawideband over Fiber Systems

Optical Transmission Systems, Subsystems, and Technologies ◽

10.1364/acp.2011.83090o ◽

2011 ◽

Author(s):

Shizhong Xie ◽

Hongwei Chen ◽

Minghua Chen ◽

Sigang Yang ◽

Pengxiao Li

Keyword(s):

High Speed ◽

Impulse Radio ◽

Wireless Transmission ◽

Pulse Modulation ◽

Modulation Formats ◽

Photonic Generation

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Beyond 2.5Gb/s Photonic Generation and Wireless Transmission of Different Pulse Modulation Formats for a High Speed Impulse Radio UWB over Fiber System

Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011 ◽

10.1364/ofc.2011.otuf3 ◽

2011 ◽

Cited By ~ 1

Author(s):

Pengxiao Li ◽

Hongwei Chen ◽

Minghua Chen ◽

Shizhong Xie

Keyword(s):

High Speed ◽

Impulse Radio ◽

Wireless Transmission ◽

Fiber System ◽

Pulse Modulation ◽

Modulation Formats ◽

Photonic Generation

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Photonic Generation of Dual-Band Power-Efficient Millimeter-Wave UWB Signals

Frequenz ◽

10.1515/freq-2014-0168 ◽

2015 ◽

Vol 69 (5-6) ◽

Author(s):

Peng Xiang ◽

Hao Guo ◽

Dalei Chen ◽

Hua Zhou

Keyword(s):

Millimeter Wave ◽

Ultra Wideband ◽

Dual Band ◽

60 Ghz ◽

Broadband Wireless ◽

Power Efficient ◽

Novel Approach ◽

Photonic Generation ◽

Promising Solution ◽

Spectrum Limit

AbstractUltra-wideband (UWB) technology has attracted great interest because it can provide a promising solution of future radar and short-range broadband wireless communications. The generation of millimeter-wave UWB signals using photonic approaches can reduce the high cost of the millimeter-wave electrical circuits. Moreover, it is well compatible with fiber transmission, which can effectively extend its signal coverage. In this paper, a novel approach to the photonic generation of millimeter-wave UWB signals with dual-band operation consideration is proposed. The proposed scheme can simultaneously generate millimeter-wave UWB signals in both 24 GHz and 60 GHz millimeter band, and can efficiently exploit the spectrum limit allowed by the FCC mask by using the linear combination pulse design concept. A model describing the proposed system is developed and the generation of 24/60 GHz millimeter-wave UWB signals is demonstrated via computer simulations.

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A novel approach to photonic generation of UWB signals with a reconfigurable spectral notch-band

2015 International Conference on Wireless Communications & Signal Processing (WCSP) ◽

10.1109/wcsp.2015.7340978 ◽

2015 ◽

Author(s):

Peng Xiang ◽

Dalei Chen ◽

Zhu Huatao ◽

Haisong Jiao ◽

Zhang Baofu

Keyword(s):

Notch Band ◽

Novel Approach ◽

Photonic Generation

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A Reconfigurable Triple-Notch-Band Antenna Integrated with Defected Microstrip Structure Band-Stop Filter for Ultra-Wideband Cognitive Radio Applications

International Journal of Antennas and Propagation ◽

10.1155/2013/472645 ◽

2013 ◽

Vol 2013 ◽

pp. 1-13 ◽

Cited By ~ 24

Author(s):

Yingsong Li ◽

Wenxing Li ◽

Qiubo Ye

Keyword(s):

Cognitive Radio ◽

Narrow Band ◽

Ultra Wideband ◽

Impedance Bandwidth ◽

Radiation Patterns ◽

Design Procedures ◽

Notch Band ◽

Band Stop Filter ◽

Microstrip Structure ◽

Microstrip Feed

A printed reconfigurable ultra-wideband (UWB) monopole antenna with triple narrow band-notched characteristics is proposed for cognitive radio applications in this paper. The triple narrow band-notched frequencies are obtained using a defected microstrip structure (DMS) band stop filter (BSF) embedded in the microstrip feed line and an invertedπ-shaped slot etched in the rectangular radiation patch, respectively. Reconfigurable characteristics of the proposed cognitive radio antenna (CRA) are achieved by means of four ideal switches integrated on the DMS-BSF and the invertedπ-shaped slot. The proposed UWB CRA can work at eight modes by controlling switches ON and OFF. Moreover, impedance bandwidth, design procedures, and radiation patterns are presented for analysis and explanation of this antenna. The designed antenna operates over the frequency band between 3.1 GHz and 14 GHz (bandwidth of 127.5%), with three notched bands from 4.2 GHz to 6.2 GHz (38.5%), 6.6 GHz to 7.0 GHz (6%), and 12.2 GHz to 14 GHz (13.7%). The antenna is successfully simulated, fabricated, and measured. The results show that it has wide impedance bandwidth, multimodes characteristics, stable gain, and omnidirectional radiation patterns.

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