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DDS signal generator and frequency hopping method

A signal generator and frequency hopping technology, applied in electrical components, transmission systems, etc., can solve the problem of no signal generator integrated frequency hopping source, etc., achieve good scalability and upgradeable performance, and low design cost

Active Publication Date: 2012-05-23
SUZHOU RIGOL PRECISION ELECTRIC TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there is no function of integrating frequency hopping sources on signal generators based on DDS technology

Method used

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  • DDS signal generator and frequency hopping method
  • DDS signal generator and frequency hopping method
  • DDS signal generator and frequency hopping method

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0028] An embodiment of the present invention provides a DDS signal generator, figure 1 It is a schematic structural diagram of a DDS signal generator in an embodiment of the present invention.

[0029] like figure 1 As shown, the DDS signal generator includes a phase accumulator 101, an adder 102 and a waveform memory 103; the DDS signal generator also includes: a frequency control word storage unit 104 and a point-taking control unit 105; wherein,

[0030] The frequency control word storage unit 104 is used for storing the frequency control word table, and the frequency control word tabl...

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Abstract

An embodiment of the invention provides a DDS signal generator and a frequency hopping method. The DDS signal generator comprises a phase accumulator, an adder and a waveform memory. The DDS signal generator also comprises a frequency control word memory cell used for storing a frequency control word table which comprises a plurality of frequency control words which are calculated according to frequency set by a user and an acquisition point control unit which acquires a frequency control word from the frequency control word table according to a frequency hopping interval. Thus the DDS signal generator controls output frequency according to the frequency control word to realize frequency hopping. Through the embodiment, a frequency hopping function is realized on hardware resource of a present DDS signal generator, design cost is low, and the frequency hopping function has good extensible and upgradeable performance.

Description

technical field [0001] The invention relates to the technical field of direct digital frequency synthesis (DDS, Direct Digital Frequency Synthesis), in particular to a DDS signal generator and a frequency hopping method. Background technique [0002] Traditional wireless communication generally adopts a fixed-frequency communication method, that is, information is transmitted on a fixed frequency, such as common wireless walkie-talkies, car mobile phones, etc. When the fixed-frequency communication method is disturbed, the communication quality will drop rapidly, or even interrupt the communication. In military communications applications, however, a communication outage is usually fatal. [0003] Frequency hopping communication has good characteristics of anti-fading, anti-multipath interference, and anti-network interference. Therefore, frequency hopping communication is not only widely used in military affairs, but also gradually introduced into civilian equipment. For e...

Claims

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Application Information

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IPC IPC(8): H04B1/7136
Inventor 王悦王铁军李维森
Owner SUZHOU RIGOL PRECISION ELECTRIC TECH
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