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Ultra wide band radio-frequency signal generating method and device based on double driving modulators

A dual-drive modulator, ultra-wideband signal technology, applied to a method field in the communication field, can solve problems such as increasing the complexity of UWB pulse signals, and achieve the effects of reducing complexity and improving flexibility

Inactive Publication Date: 2014-05-14
SHANGHAI JIAO TONG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology can generate several UWB pulse signals, the system requires dual wavelengths, arbitrary waveform generators, two phase modulators and frequency discriminators, etc., which increases the complexity of generating UWB pulse signals

Method used

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  • Ultra wide band radio-frequency signal generating method and device based on double driving modulators
  • Ultra wide band radio-frequency signal generating method and device based on double driving modulators
  • Ultra wide band radio-frequency signal generating method and device based on double driving modulators

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Embodiment 1

[0031] This example image 3 Said, the pulse signal with low repetition rate generated by the signal generator 4 is divided into two paths through the electrical splitter 12, respectively amplified and loaded to the two radio frequency terminals of the dual-drive modulator 3, wherein: the relative position of the signal is determined by the electrical splitter 12. The delay line 5 controls. By controlling various parameters, the output signal is interfered to obtain the UWB pulse signal, and the corresponding signal waveform and electric spectrum can be obtained through the oscilloscope 11 and the electric spectrometer 10 respectively.

[0032] The Gaussian pulse signal splitter divides one Gaussian pulse signal into two Gaussian pulse signals with the same energy and the same data.

[0033] Such as figure 1 The dual drive modulator 3 is composed of two phase modulators 3 that can be independently modulated, and the half-wave voltage is about 4V. The two phase modulators 3 can...

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Abstract

Provided is an ultra wide band radio-frequency signal generating method and device based on double driving modulators. Corresponding Gaussian pulse signals are adjusted on two phase modulators of the double driving modulators, and then relative time delay, signal amplitude and relative phase shifting between the two Gaussian pulse signals are respectively controlled, so that a transverse electric mode which passes through a polarization controller generates ultra wide band radio-frequency signals through the double driving modulators. According to the method and device, four different kinds of UWB pulse signals which comprise one-order UWB pulse signals, two-order UWB pulse signals, three-order UWB pulse signals and high-order UWB pulse signals can be generated. Meanwhile, the generated first three kinds of signals can meet the requirement of the frequency occupying range of UWB pulse signals given by FCC, accordingly, the complexity degree of a flexible UWB pulse signal generating device is greatly lowered, cost is low, and UWB pulse signals can be generated easily and flexibly.

Description

technical field [0001] The present invention relates to a method in the field of communication, specifically a dual-drive modulator (DDMZM, Dual-Drive Mach Zehnder Modulator, also known as a dual-arm Mach Zehnder modulator) to obtain a variety of ultra-wideband (Ultra wideband , UWB) radio frequency signal method and device. Background technique [0002] Wireless communication technology has brought earth-shaking changes to human society. With the development of wireless technology, the coexistence of multiple wireless technologies has become a technical difficulty and trend. UWB ultra-wideband signal is a low-power, high-speed signal, but its transmission distance shorter. However, due to its own compatibility with other wireless systems, UWB technology has been widely used in the wireless field. [0003] UWB wireless communication signals are mainly divided into two categories: one is ultra-wideband orthogonal frequency division multiplexing (UWB-OFDM), which can be divi...

Claims

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Application Information

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IPC IPC(8): H04B1/717
Inventor 曹攀胡小锋吴佳旸姜新红苏翼凯
Owner SHANGHAI JIAO TONG UNIV
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