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跳频功能实现原理图
2010-10-21 17:15:37  3382
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<p class="MsoNormal" style="TEXT-INDENT: 21pt; mso-char-indent-count: 2.0; mso-char-indent-size: 10.5pt"><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: PMingLiU; mso-hansi-font-family: 'Times New="New"  Roman'">由于</span><span lang="EN-US" style="mso-bidi-font-size: 14.0pt">2.4G</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">频段没有使用授权限制,目前家用电器、手机、无线网络都集中在此频段,干扰问题难以避免。如何</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: PMingLiU; mso-hansi-font-family: 'Times New="New"  Roman'">避开在家庭市场中易与其它无线传输间(</span><span lang="EN-US" style="mso-bidi-font-size: 14.0pt">Bluetooth</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: PMingLiU; mso-hansi-font-family: 'Times New="New"  Roman'">、</span><span lang="EN-US" style="mso-bidi-font-size: 14.0pt">HomeRF</span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: PMingLiU; mso-hansi-font-family: 'Times New="New"  Roman'">)发生干扰成了首要解决的问题。</span><span lang="EN-US" style="FONT-FAMILY: PMingLiU; mso-bidi-font-size: 14.0pt; mso-hansi-font-family: 'Times New="New"  Roman'; mso-fareast-font-family: 宋体"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></span></p>
<p><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">跳频技术</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> (Frequency-Hopping Spread Spectrum</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">;</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> FHSS)</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">是在</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">2.4GHz</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">频带以一定的频宽将其划分为若干个无线电频率信道(</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">Radio Frequency Channel</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">;</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">RFC</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">),并且以使用接收和发送两端一样的频率跳跃模式(</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">Frequency Hopping</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">)来接发讯号及防止数据撷取。其工作原理是,收发双方传输信号的载波按照预定规律进行离散变化。以达到避开干扰,完成传输。简单的说,</span><span lang="EN-US" style="FONT-SIZE: 10.5pt; FONT-FAMILY: 'Times New="New"  Roman'; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">FHSS</span><span style="FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New="New"  Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不是抑制干扰而是容忍干扰</span></p>
<p>&nbsp;</p>
<p>实现原理图请下载附件</p><br/>

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2010-10-21 17:15:37   评论
17 个讨论
<p>我最近就在研究调频,下来看看,顶</p>
2010-10-24 18:26:31 评论

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有空把你的经验也拿上来顶一下,大家共同进步
2010-10-25 09:27:27 评论

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先收藏吧
2011-3-8 20:18:32 评论

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不错,很好,支持!
2011-3-11 09:11:58 评论

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才1頁太少.............
2011-3-20 15:14:40 评论

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有空把你的经验也拿上来顶一下
2011-3-20 17:20:15 评论

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过路来看看@!!!!!!!!
2011-5-3 22:25:43 评论

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先下来看看再广甲。。。
2014-3-15 19:19:03 评论

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学习一下。               
2014-8-26 12:54:29 评论

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路过路过。。。。。
2014-8-29 19:52:59 评论

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学习学些
2017-1-6 19:14:42 评论

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你要的都在这。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

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2017-1-11 20:17:12 评论

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好东西,支持一下。
2017-3-19 13:43:47 评论

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很及时的资料,多谢分享!
2017-5-19 17:22:59 评论

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有空把你的经验也拿上来顶一下,大家共同进步
2017-5-23 16:34:22 评论

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学习学习。。。。。。。。。。。。。。。
2017-9-14 10:14:53 评论

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啊啊啊啊啊啊啊啊啊啊啊啊啊
2018-2-8 17:26:41 评论

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