{"id":188363,"date":"2025-09-03T10:54:21","date_gmt":"2025-09-03T03:54:21","guid":{"rendered":"https:\/\/techmaster.com.vn\/?post_type=product&#038;p=188363"},"modified":"2026-08-25T14:51:16","modified_gmt":"2026-08-25T07:51:16","slug":"keysight-e4991a-impedance-analyzer","status":"publish","type":"product","link":"https:\/\/techmaster.com.vn\/en\/keysight-e4991a-impedance-analyzer\/","title":{"rendered":"Keysight E4991A Impedance Analyzer"},"content":{"rendered":"<h2 data-start=\"170\" data-end=\"264\">Keysight E4991A RF Impedance \/ Material Analyzer<\/h2>\n<figure id=\"attachment_188377\" aria-describedby=\"caption-attachment-188377\" style=\"width: 1164px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/09\/Keysight-E4991A.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-188377\" src=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/09\/Keysight-E4991A.png\" alt=\"Keysight E4991A\" width=\"1164\" height=\"922\" \/><\/a><figcaption id=\"caption-attachment-188377\" class=\"wp-caption-text\">Keysight E4991A<\/figcaption><\/figure>\n<h3 data-start=\"266\" data-end=\"280\">Overview<\/h3>\n<p data-start=\"281\" data-end=\"662\">The Keysight E4991A RF Impedance\/Material Analyzer is an advanced solution designed for high-precision impedance measurements and material evaluations from 1 MHz to 3 GHz. With its cutting-edge RF-IV technique, it delivers more accurate results than traditional reflection methods, making it an essential instrument for R&amp;D, quality assurance, and production testing.<\/p>\n<h3 data-start=\"664\" data-end=\"682\">Key Features<\/h3>\n<ul data-start=\"683\" data-end=\"1044\">\n<li data-start=\"683\" data-end=\"750\">\n<p data-start=\"685\" data-end=\"750\">Frequency sweep range: 1 MHz to 3 GHz with 1 mHz resolution<\/p>\n<\/li>\n<li data-start=\"751\" data-end=\"810\">\n<p data-start=\"753\" data-end=\"810\">Basic accuracy: \u00b10.8% across a wide impedance range<\/p>\n<\/li>\n<li data-start=\"811\" data-end=\"870\">\n<p data-start=\"813\" data-end=\"870\">Oscillator level: Up to 1 dBm \/ 0.5 Vrms \/ 10 mArms<\/p>\n<\/li>\n<li data-start=\"871\" data-end=\"916\">\n<p data-start=\"873\" data-end=\"916\">DC bias (Option 001): \u00b140 V or \u00b150 mA<\/p>\n<\/li>\n<li data-start=\"917\" data-end=\"985\">\n<p data-start=\"919\" data-end=\"985\">User interface: Windows-style, with built-in VBA programming<\/p>\n<\/li>\n<li data-start=\"986\" data-end=\"1044\">\n<p data-start=\"988\" data-end=\"1044\">Connectivity: Fast data transfer via LAN interface<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1046\" data-end=\"1073\">Advanced Capabilities<\/h3>\n<ul data-start=\"1074\" data-end=\"1756\">\n<li data-start=\"1074\" data-end=\"1304\">\n<p data-start=\"1076\" data-end=\"1304\">Dielectric \/ Magnetic Material Measurement (Option 002)<br data-start=\"1135\" data-end=\"1138\" \/>Enables accurate analysis of dielectric and magnetic properties across a broad frequency range, supporting advanced material research and industrial applications.<\/p>\n<\/li>\n<li data-start=\"1306\" data-end=\"1505\">\n<p data-start=\"1308\" data-end=\"1505\">On-Wafer Measurement (Option 010)<br data-start=\"1345\" data-end=\"1348\" \/>Simplifies integration with RF probe systems for direct on-wafer impedance testing, providing reliable results for semiconductor device characterization.<\/p>\n<\/li>\n<li data-start=\"1507\" data-end=\"1756\">\n<p data-start=\"1509\" data-end=\"1756\">Temperature Characteristic Measurement (Option 007)<br data-start=\"1564\" data-end=\"1567\" \/>Offers precise analysis of temperature-dependent characteristics from -55 \u00b0C to +150 \u00b0C, with advanced temperature drift compensation for reliable material and component evaluation.<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1758\" data-end=\"1776\">Applications<\/h3>\n<p data-start=\"1777\" data-end=\"1817\">The Keysight E4991A is widely used in:<\/p>\n<ul data-start=\"1818\" data-end=\"2003\">\n<li data-start=\"1818\" data-end=\"1865\">\n<p data-start=\"1820\" data-end=\"1865\">R&amp;D of high-frequency electronic components<\/p>\n<\/li>\n<li data-start=\"1866\" data-end=\"1907\">\n<p data-start=\"1868\" data-end=\"1907\">Semiconductor device characterization<\/p>\n<\/li>\n<li data-start=\"1908\" data-end=\"1952\">\n<p data-start=\"1910\" data-end=\"1952\">Dielectric and magnetic material testing<\/p>\n<\/li>\n<li data-start=\"1953\" data-end=\"2003\">\n<p data-start=\"1955\" data-end=\"2003\">Temperature stability and reliability analysis<\/p>\n<\/li>\n<\/ul>\n<div class=\"kx tm-legacy-replacement\">\n<div class=\"block\">\n<div class=\"eyebrow\">Tr\u1ea1ng th\u00e1i s\u1ea3n ph\u1ea9m<\/div>\n<h2 id=\"chuyen-doi-e4991a\">Chuy\u1ec3n \u0111\u1ed5i t\u1eeb E4991A sang c\u1ea5u h\u00ecnh hi\u1ec7n h\u00e0nh<\/h2>\n<p style=\"background:#FFF4E5;border:1px solid #F3C88F;border-radius:10px;padding:14px 16px;color:#5a4423\">Keysight \u0111\u00e3 <strong>ng\u1eebng s\u1ea3n xu\u1ea5t E4991A<\/strong>. Techmaster gi\u1eef trang n\u00e0y \u0111\u1ec3 tra c\u1ee9u th\u00f4ng s\u1ed1 v\u00e0 h\u1ed7 tr\u1ee3 thi\u1ebft b\u1ecb \u0111ang d\u00f9ng \u2014 <strong>hi\u1ec7u chu\u1ea9n ISO\/IEC 17025, s\u1eeda ch\u1eefa, ph\u1ee5 ki\u1ec7n<\/strong> v\u1eabn ph\u1ee5c v\u1ee5 b\u00ecnh th\u01b0\u1eddng.<\/p>\n<p>Theo trang s\u1ea3n ph\u1ea9m ch\u00ednh h\u00e3ng, c\u1ea5u h\u00ecnh thay th\u1ebf cho <strong>E4991A<\/strong> l\u00e0:<\/p>\n<div class=\"cards\" style=\"grid-template-columns:repeat(1,minmax(0,1fr))\">\n<div class=\"card\" style=\"border-left:4px solid #C70032\">\n<h3 style=\"margin-bottom:6px\"><a href=\"https:\/\/techmaster.com.vn\/may-phan-tich-tro-khang-keysight-e4991b\/\" style=\"color:#1B55A6\">M\u00e1y ph\u00e2n t\u00edch tr\u1edf kh\u00e1ng RF Keysight E4991B<\/a><\/h3>\n<p style=\"margin:0\">c\u00f3 s\u1eb5n t\u1ea1i Techmaster.<\/p>\n<\/div>\n<\/div>\n<p style=\"font-size:13px;color:#5b6b80;margin-top:14px\">Ngu\u1ed3n: trang s\u1ea3n ph\u1ea9m ch\u00ednh h\u00e3ng Keysight \u2014 <a href=\"https:\/\/www.keysight.com\/us\/en\/product\/E4991A\/rf-impedancematerial-analyzer.html\" target=\"_blank\" rel=\"noopener nofollow\" style=\"color:#1B55A6\">E4991A<\/a> (m\u1ee5c \u201cS\u1ea3n ph\u1ea9m thay th\u1ebf\u201d). Li\u00ean h\u1ec7 k\u1ef9 s\u01b0 Techmaster <strong>0908 173 345<\/strong> \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n l\u1ed9 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p style=\"background:#FFF4E5;border:1px solid #F3C88F;border-radius:8px;padding:10px 12px;margin:0 0 12px;color:#5a4423;font-size:14px\"><strong>\u26a0 Model \u0111\u00e3 ng\u1eebng s\u1ea3n xu\u1ea5t.<\/strong> Xem c\u1ea5u h\u00ecnh thay th\u1ebf b\u00ean d\u01b0\u1edbi.<\/p>\n<h3>Highlight:<\/h3>\n<ul>\n<li data-start=\"683\" data-end=\"750\">\n<p data-start=\"685\" data-end=\"750\">Frequency sweep range: 1 MHz to 3 GHz with 1 mHz resolution<\/p>\n<\/li>\n<li data-start=\"751\" data-end=\"810\">\n<p data-start=\"753\" data-end=\"810\">Basic accuracy: \u00b10.8% across a wide impedance range<\/p>\n<\/li>\n<li data-start=\"811\" data-end=\"870\">\n<p data-start=\"813\" data-end=\"870\">Oscillator level: Up to 1 dBm \/ 0.5 Vrms \/ 10 mArms<\/p>\n<\/li>\n<li data-start=\"871\" data-end=\"916\">\n<p data-start=\"873\" data-end=\"916\">DC bias (Option 001): \u00b140 V or \u00b150 mA<\/p>\n<\/li>\n<li data-start=\"917\" data-end=\"985\">\n<p data-start=\"919\" data-end=\"985\">User interface: Windows-style, with built-in VBA programming<\/p>\n<\/li>\n<li data-start=\"986\" data-end=\"1044\">\n<p data-start=\"988\" data-end=\"1044\">Connectivity: Fast data transfer via LAN interface<\/p>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/techmaster.com.vn\/wp-content\/uploads\/2025\/09\/5952-1430.pdf\" class=\"button alert is-alert is-medium\"><br \/>\n    <span>LCR Meters, Impedance Analyzers and Test Fixtures<\/span><br \/>\n  <\/a><\/p>\n","protected":false},"featured_media":188377,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[277],"product_tag":[],"class_list":{"0":"post-188363","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-lcr-impedance-meters","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.8 (Yoast SEO v26.8) - 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