Nanosecond microwave narrow pulse modulator

A narrow pulse, nanosecond technology, applied in the field of microwave signal sources, can solve the problem of incompatible instrument models, and achieve the effect of independent structure, more targeted functions, and small size

Inactive Publication Date: 2016-10-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments, based on The embodiments of the present invention, and all other embodiments obtained by those of ordinary skill in the art without creative work, fall within the protection scope of the present invention.

[0021] Such as figure 1 As shown, the present invention provides a flow chart of a nanosecond-level microwave narrow pulse modulator module, including a time domain pulse generation module, a time domain pulse waveform conditioning module, a microwave narrow pulse generation module, and a microwave pulse waveform conditioning module.

[0022] The time-domain pulse generation module uses FPGA or pulse signal generator (HP8114A) to generate time-dom...

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Abstract

The invention discloses a nanosecond microwave narrow pulse modulator, and belongs to the field of microwave signal sources. The nanosecond microwave narrow pulse modulator comprises a time domain pulse generation module, a time domain pulse waveform modulation module, a microwave narrow pulse generation module and a microwave pulse waveform modulation module, wherein a modulation signal switch ratio of better than 80dB is ensured by using a microwave switch pre-modulation serial extremely low frequency mixing scheme; the nanosecond pulse width adjustment is achieved, the highest repetition frequency is 25 MHz, the modulation signal switch ratio is larger than 80dB, and the apparatus cost can be greatly reduced compared with purchasing a signal source specific pulse modulation option.

Description

Technical field [0001] The invention belongs to the field of microwave signal sources, and particularly relates to a nanosecond-level microwave narrow pulse modulation technology. Background technique [0002] Pulse modulation is a common function of a basic microwave signal source. For high-power microwave sources, electromagnetic environmental effects research and other fields, conventional pulse modulation parameters (microsecond pulse width) can no longer meet application requirements. In the experimental research of high-power microwave effects, the effect source is usually an amplifier type. In order to produce a narrow-band high-power microwave output with specific waveform parameters, a wide-range seed signal source with adjustable pulse parameters is required, and the narrowest pulse width should not be greater than 10ns; On the one hand, the effect source gain is high, so the pulse switching ratio is required to be greater than 70dB. A few commercial microwave signal ...

Claims

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Application Information

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IPC IPC(8): H03K7/08
CPCH03K7/08
Inventor 汪海洋熊忠伟周翼鸿
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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