{"id":1416,"date":"2025-10-12T02:20:55","date_gmt":"2025-10-12T02:20:55","guid":{"rendered":"https:\/\/www.wallisemi.com\/?p=1416"},"modified":"2025-10-13T02:23:04","modified_gmt":"2025-10-13T02:23:04","slug":"%e7%b2%be%e5%ba%a6%e3%81%ae%e5%a3%81%e3%82%92%e7%a0%b4%e3%82%8b%e5%88%86%e6%95%b0%e5%91%a8%e6%b3%a2%e6%95%b0%e5%88%86%e5%89%b2%e6%8a%80%e8%a1%93%e3%81%8c%e9%ab%98%e6%80%a7%e8%83%bdgnss-rf%e3%83%81","status":"publish","type":"post","link":"https:\/\/www.wallisemi.com\/ja\/blog\/industry-insights\/breaking-the-precision-barrier-how-fractional-frequency-division-technology-shapes-high-performance-gnss-rf-chips\/","title":{"rendered":"\u7cbe\u5ea6\u306e\u58c1\u3092\u7834\u308b\uff1a\u30d5\u30e9\u30af\u30b7\u30e7\u30ca\u30eb\u5468\u6ce2\u6570\u5206\u5272\u6280\u8853\u304c\u9ad8\u6027\u80fdGNSS RF\u30c1\u30c3\u30d7\u3092\u5f62\u6210\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>\u3088\u308a\u9ad8\u3044\u6e2c\u4f4d\u7cbe\u5ea6\u3068\u611f\u5ea6\u304c\u5e38\u306b\u8ffd\u6c42\u3055\u308c\u308bGNSS\uff08\u5168\u5730\u7403\u6e2c\u4f4d\u885b\u661f\u30b7\u30b9\u30c6\u30e0\uff09\u5206\u91ce\u3001, <strong>RF\u30c1\u30c3\u30d7<\/strong>&nbsp;\u53d7\u4fe1\u6a5f\u306e\u300c\u6700\u524d\u7dda\u306e\u6b69\u54e8\u300d\u3068\u3057\u3066\u306e\u5f79\u5272\u3092\u679c\u305f\u3059\u3002\u305d\u306e\u6027\u80fd\u306f\u3001\u7aef\u672b\u304c\u5fae\u5f31\u306a\u885b\u661f\u4fe1\u53f7\u3092\u6355\u6349\u3057\u51e6\u7406\u3059\u308b\u80fd\u529b\u3092\u76f4\u63a5\u6c7a\u5b9a\u3059\u308b\u3002\u591a\u304f\u306e\u91cd\u8981\u306a\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4e2d\u3067 <strong>RF\u30c1\u30c3\u30d7<\/strong>, \u7279\u306b\u3001\u5c40\u90e8\u767a\u632f\u5668\uff08LO\uff09\u4fe1\u53f7\u3092\u751f\u6210\u3059\u308bPLL\uff08\u30d5\u30a7\u30fc\u30ba\u30fb\u30ed\u30c3\u30af\u30fb\u30eb\u30fc\u30d7\uff09\u5468\u6ce2\u6570\u30b7\u30f3\u30bb\u30b5\u30a4\u30b6\u30fc\u306f\u6975\u3081\u3066\u91cd\u8981\u3067\u3042\u308b\u3002\u3053\u306e\u4e2d\u3067\u3001\u5206\u6570\u5468\u6ce2\u6570\u5206\u5272\u6280\u8853\u306f\u3001\u4fe1\u53f7\u306e\u7d14\u5ea6\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u6c7a\u5b9a\u7684\u306a\u5f79\u5272\u3092\u679c\u305f\u3059\u3002.<\/p>\n\n\n\n<p>\u5f93\u6765\u306e\u6574\u6570\u5206\u5272\u5468\u6ce2\u6570\u30b7\u30f3\u30bb\u30b5\u30a4\u30b6\u30fc\u306f\u3001\u975e\u6574\u6570\u306e\u5468\u6ce2\u6570\u95a2\u4fc2\u306b\u82e6\u52b4\u3057\u3066\u304a\u308a\u3001LO\u5468\u6ce2\u6570\u306e\u8a2d\u5b9a\u306e\u67d4\u8edf\u6027\u304c\u5236\u9650\u3055\u308c\u3066\u3044\u308b\u3002. <strong>\u30d5\u30e9\u30af\u30b7\u30e7\u30ca\u30eb\u5468\u6ce2\u6570\u5206\u5272\u6280\u8853<\/strong>&nbsp;\u5206\u5468\u6bd4\u3092\u52d5\u7684\u306b\u8abf\u6574\u3057\u3001\u5e73\u5747\u5206\u5468\u5024\u3092\u751f\u6210\u3059\u308b\u3002\u3057\u304b\u3057\u3001\u3053\u306e\u6280\u8853\u306b\u306f\u5206\u6570\u30b9\u30d1\u30fc\u3068\u3044\u3046\u5384\u4ecb\u306a\u554f\u984c\u304c\u3042\u308b\u3002\u3053\u306e\u30b9\u30d1\u30fc\u304cPLL\u30eb\u30fc\u30d7\u306e\u5e2f\u57df\u5e45\u5185\u306b\u3042\u308b\u5834\u5408\u3001\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u9664\u53bb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u305d\u306e\u7d50\u679c\u3001PLL\u304c\u51fa\u529b\u3059\u308bLO\u4fe1\u53f7\u306e\u54c1\u8cea\u304c\u4f4e\u4e0b\u3059\u308b\u3002 <strong>RF\u30c1\u30c3\u30d7<\/strong>. .\u3053\u308c\u306f\u6700\u7d42\u7684\u306b\u3001\u30df\u30ad\u30b7\u30f3\u30b0\u4e2d\u306b\u751f\u6210\u3055\u308c\u308b\u4e2d\u9593\u5468\u6ce2\u6570\uff08IF\uff09\u4fe1\u53f7\u306e\u4fe1\u53f7\u5bfe\u96d1\u97f3\u6bd4\uff08SNR\uff09\u306e\u60aa\u5316\u306b\u3064\u306a\u304c\u308a\u3001\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u7aef\u672b\u306e\u6e2c\u4f4d\u7cbe\u5ea6\u306b\u76f4\u63a5\u5f71\u97ff\u3059\u308b\u3002.<\/p>\n\n\n\n<p>\u4f4e\u30b9\u30d1\u30fc\u5206\u5468\u306e\u554f\u984c\u306b\u53d6\u308a\u7d44\u3080\u305f\u3081\u3001\u674e\u6b23\u3068\u9ec4\u6d77\u751f\u306b\u3088\u308b\u7814\u7a76\u3067\u306f\u3001\u53e4\u5178\u7684\u306a\u30a2\u30ad\u30e5\u30e0\u30ec\u30fc\u30bf\u69cb\u9020\u3068\u5148\u9032\u7684\u306aMASH1-1-1\u0394-\u03a3\u5909\u8abf\u5668\u69cb\u9020\u3068\u3044\u30462\u3064\u306e\u4e3b\u6d41\u6280\u8853\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u5fb9\u5e95\u7684\u306b\u6bd4\u8f03\u3057\u3066\u3044\u308b\u3002.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>\u30a2\u30ad\u30e5\u30e0\u30ec\u30fc\u30bf\u30fc\u306e\u69cb\u9020<\/strong><strong>:<\/strong><strong><\/strong><\/h5>\n\n\n\n<p>\u3053\u306e\u69cb\u9020\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u30b3\u30b9\u30c8\u52b9\u7387\u306b\u512a\u308c\u3066\u3044\u308b\u304c\u3001\u5206\u5468\u6bd4\u306f2\u3064\u306e\u5024\uff08N\u3068N+1\uff09\u306e\u9593\u3067\u3057\u304b\u5207\u308a\u66ff\u3048\u3089\u308c\u306a\u3044\u3002\u3053\u306e\u5468\u671f\u7684\u306a\u5207\u308a\u66ff\u3048\u306f\u3001\u51fa\u529b\u30b9\u30da\u30af\u30c8\u30e9\u30e0\u306e\u4f4e\u5468\u6ce2\u6570\u57df\u306b\u5f37\u3044\u96e2\u6563\u30b9\u30d7\u30ea\u30a2\u30b9\u3092\u767a\u751f\u3055\u305b\u308b\u3002 <strong>RF\u30c1\u30c3\u30d7<\/strong>.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>MASH1-1-1 \u0394-\u03a3\u69cb\u9020<\/strong><strong>:<\/strong><strong><\/strong><\/h5>\n\n\n\n<p>\u3053\u306e\u69cb\u9020\u306f\u30013\u3064\u306e1\u6b21\u0394-\u03a3\u5909\u8abf\u5668\u3092\u30ab\u30b9\u30b1\u30fc\u30c9\u63a5\u7d9a\u3059\u308b\u3053\u3068\u3067\u3001\u30ce\u30a4\u30ba\u30b7\u30a7\u30fc\u30d4\u30f3\u30b0\u3092\u5b9f\u73fe\u3057\u3066\u3044\u308b\u3002\u30ce\u30a4\u30ba\u30b7\u30a7\u30fc\u30d4\u30f3\u30b0\u306f\u3001\u672c\u6765\u4f4e\u5468\u6ce2\u5e2f\u57df\u306b\u96c6\u4e2d\u3059\u308b\u5468\u6ce2\u6570\u91cf\u5b50\u5316\u30ce\u30a4\u30ba\u3092\u9ad8\u5468\u6ce2\u5e2f\u57df\u306b\u300c\u62bc\u3057\u51fa\u3059\u300d\u91cd\u8981\u306a\u6a5f\u80fd\u3067\u3042\u308b\u3002\u306b\u304a\u3044\u3066 <strong>RF\u30c1\u30c3\u30d7<\/strong>&nbsp;PLL\u8a2d\u8a08\u3067\u306f\u3001\u9ad8\u5468\u6ce2\u5e2f\u57df\u306e\u30ce\u30a4\u30ba\u3092\u30eb\u30fc\u30d7\u30fb\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u52b9\u679c\u7684\u306b\u9664\u53bb\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n\n\n<p>\u7814\u7a76\u30c1\u30fc\u30e0\u306f\u3001GNSS\u306e\u5178\u578b\u7684\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30b7\u30ca\u30ea\u30aa\u3092\u4f7f\u7528\u3057\u307e\u3057\u305f\u3002 <strong>RF\u30c1\u30c3\u30d7<\/strong>&nbsp;(\u57fa\u6e96\u5468\u6ce2\u6570\uff1a16.368 MHz\u3001\u4e2d\u9593\u5468\u6ce2\u6570\uff1a3.996 MHz\uff09\u3092\u7528\u3044\u3066\u3001GPS L1\u3068BeiDou B1\u306e\u5468\u6ce2\u6570\u30dd\u30a4\u30f3\u30c8\u306b\u304a\u3051\u308b\u4e21\u69cb\u9020\u3092\u30b7\u30df\u30e5\u30ec\u30fc\u30c8\u3057\u305f\u3002\u30d1\u30ef\u30fc\u30b9\u30da\u30af\u30c8\u30eb\u5bc6\u5ea6\uff08PSD\uff09\u89e3\u6790\u306e\u7d50\u679c\u3001\u0394-\u03a3\u30d9\u30fc\u30b9\u306e\u5909\u8abf\u5668\u306f\u30010\uff5e2MHz\u306e\u4f4e\u5468\u6ce2\u5e2f\u57df\u3067\u767a\u751f\u3059\u308b\u5206\u6570\u30b9\u30d7\u30ea\u30a2\u30b9\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u9ad8\u5468\u6ce2\u5e2f\u57df\u306b\u30b7\u30d5\u30c8\u3055\u305b\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u3001PLL\u30eb\u30fc\u30d7\u5e2f\u57df\u5e45\u5185\u306e\u30b9\u30da\u30af\u30c8\u30eb\u7d14\u5ea6\u3092\u5927\u5e45\u306b\u6539\u5584\u3057\u305f\u3053\u3068\u304c\u660e\u3089\u304b\u306b\u306a\u308a\u307e\u3057\u305f\u3002.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>\u7d50\u8ad6<\/strong><strong>:<\/strong><strong><\/strong><\/h5>\n\n\n\n<p>\u6700\u65b0\u306e\u9ad8\u6027\u80fdGNSS\u3067\u306f <strong>RF\u30c1\u30c3\u30d7<\/strong>&nbsp;\u4f4e\u30b9\u30d1\u30fc\u52d5\u4f5c\u3092\u8ffd\u6c42\u3059\u308b\u5834\u5408\u3001MASH1-1-1 \u0394-\u03a3\u69cb\u9020\u306b\u57fa\u3065\u304f\u30d5\u30e9\u30af\u30b7\u30e7\u30ca\u30eb\u5468\u6ce2\u6570\u5206\u5272\u6280\u8853\u304c\u9593\u9055\u3044\u306a\u304f\u512a\u308c\u305f\u9078\u629e\u3068\u306a\u308b\u3002\u5de7\u307f\u306a\u30ce\u30a4\u30ba\u30fb\u30b7\u30a7\u30a4\u30d4\u30f3\u30b0\u306b\u3088\u308a\u3001LO\u30b9\u30da\u30af\u30c8\u30e9\u30e0\u3092\u52b9\u679c\u7684\u306b\u6d44\u5316\u3057\u3001\u6b21\u306e\u3088\u3046\u306a\u6280\u8853\u7684\u57fa\u76e4\u3092\u63d0\u4f9b\u3059\u308b\u3002 <strong>RF\u30c1\u30c3\u30d7<\/strong>&nbsp;\u8907\u96d1\u306a\u96fb\u78c1\u74b0\u5883\u4e0b\u3067\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u4fe1\u53f7\u3092\u5b89\u5b9a\u304b\u3064\u6b63\u78ba\u306b\u53d7\u4fe1\u3059\u308b\u3002\u3053\u306e\u6280\u8853\u306f\u3001\u9ad8\u7cbe\u5ea6\u30ca\u30d3\u30b2\u30fc\u30b7\u30e7\u30f3\u7aef\u672b\u306e\u958b\u767a\u3092\u63a8\u9032\u3059\u308b\u91cd\u8981\u306a\u30a8\u30f3\u30b8\u30f3\u3067\u3042\u308b\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>In the global navigation satellite system (GNSS) field, where higher positioning accuracy and sensitivity are constantly pursued, RF chips&nbsp;serve as the &#8220;front-line sentinel&#8221; of receivers. Their performance directly determines the ability of the terminal to capture and process weak satellite signals. Among the many key modules of RF chips, the phase-locked loop (PLL) frequency synthesizer, which generates the local oscillator (LO) signal, is particularly crucial. Within this, the fractional frequency division technology plays a decisive role in affecting the purity of the signal. Traditional integer-frequency division frequency synthesizers struggle with non-integer frequency relationships, limiting the flexibility of setting LO frequencies. Fractional frequency division technology&nbsp;dynamically adjusts the division ratio to generate [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1417,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[30,31],"tags":[36],"class_list":["post-1416","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industry-insights","category-blog","tag-yvette-wu"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/posts\/1416","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/comments?post=1416"}],"version-history":[{"count":1,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/posts\/1416\/revisions"}],"predecessor-version":[{"id":1418,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/posts\/1416\/revisions\/1418"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/media\/1417"}],"wp:attachment":[{"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/media?parent=1416"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/categories?post=1416"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wallisemi.com\/ja\/wp-json\/wp\/v2\/tags?post=1416"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}