{"id":767,"date":"2013-08-18T00:20:40","date_gmt":"2013-08-18T07:20:40","guid":{"rendered":"https:\/\/www.uniteng.com\/?p=767"},"modified":"2021-01-05T14:45:46","modified_gmt":"2021-01-05T06:45:46","slug":"preamplifier-30mhz-to-6ghz","status":"publish","type":"post","link":"https:\/\/www.uniteng.com\/index.php\/2013\/08\/18\/preamplifier-30mhz-to-6ghz\/","title":{"rendered":"Preamplifier 30 MHz to 6 GHz"},"content":{"rendered":"<h4>\n\t<strong>Part I: Introduction<\/strong><br \/>\n<\/h4>\n<p style=\"text-align: justify;\">\n\tI designed two preamplifiers which can be added to any application needs additional gain. The two designs have the same PCB layout but different IC U1 which is shown in the Figure 1. The PCB is shown in the Figure 2.\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz_SCH.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier30MHz_to_6GHz_SCH\" class=\"alignnone size-full wp-image-879\" height=\"448\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz_SCH.png\" width=\"868\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz_SCH.png 868w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz_SCH-300x154.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz_SCH-250x129.png 250w\" sizes=\"auto, (max-width: 868px) 100vw, 868px\" \/><\/a><br \/>\n\tFigure 1: Schematic of the Preamplifier (ADL5544 for fixed gain of 17.4 dB, ADL5545 for fixed gain of 24.1 dB, <a href=\"https:\/\/www.uniteng.com\/neildocs\/facilities\/Preamplifier_30MHz_to_6GHz.pdf\" target=\"_blank\" rel=\"noopener\">Full Schematic<\/a>)\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier30MHz_to_6GHz\" class=\"alignnone size-full wp-image-881\" height=\"436\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz.png\" width=\"986\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz.png 986w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz-300x132.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier30MHz_to_6GHz-250x110.png 250w\" sizes=\"auto, (max-width: 986px) 100vw, 986px\" \/><\/a><br \/>\n\tFigure 2: PCB of the Preamplifier\n<\/p>\n<p style=\"text-align: justify;\">\n\t<u>Common Features:<\/u>\n<\/p>\n<ul>\n<li style=\"text-align: justify;\">\n\t\tBroadband operation from 30 MHz to 6 GHz\n\t<\/li>\n<li style=\"text-align: justify;\">\n\t\tNoise figure of 2.9 dB at 900 MHz\n\t<\/li>\n<li style=\"text-align: justify;\">\n\t\tMax Input Power 18 dBm\n\t<\/li>\n<li style=\"text-align: justify;\">\n\t\tInput\/output internally matched to 50 \u2126\n\t<\/li>\n<li style=\"text-align: justify;\">\n\t\tSingle 5V power supply\n\t<\/li>\n<li style=\"text-align: justify;\">\n\t\tWide operating temperature range of -40&deg;C to +105&deg;C\n\t<\/li>\n<li>\n\t\tESD rating of &plusmn;1.5 kV (Class 1C)\n\t<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">\n\t<u>Unique Features for the Preamplifier with ADL5544:<\/u>\n<\/p>\n<ul>\n<li style=\"text-align: justify;\">\n\t\tFixed gain of 17.4 dB\n\t<\/li>\n<li>\n\t\tLow quiescent current of 55 mA\n\t<\/li>\n<\/ul>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_ADL5544_Gain_Fre\" class=\"alignnone size-full wp-image-882\" height=\"453\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre.png\" width=\"1732\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre.png 1732w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre-300x78.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre-1024x267.png 1024w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Gain_Fre-250x65.png 250w\" sizes=\"auto, (max-width: 1732px) 100vw, 1732px\" \/><\/a><br \/>\n\tFigure 3: Gain vs. Frequency and Temperature (Click to enlarge)\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_ADL5544_Noise_Fre\" class=\"alignnone size-full wp-image-884\" height=\"456\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre.png\" width=\"1709\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre.png 1709w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre-300x80.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre-1024x273.png 1024w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5544_Noise_Fre-250x66.png 250w\" sizes=\"auto, (max-width: 1709px) 100vw, 1709px\" \/><\/a><br \/>\n\tFigure 4: Noise Figure vs. Frequency and Temperature (Click to enlarge)\n<\/p>\n<p style=\"text-align: justify;\">\n\t<u>Unique Features for the Preamplifier with ADL5545:<\/u>\n<\/p>\n<ul>\n<li>\n\t\tFixed gain of 24.1 dB\n\t<\/li>\n<li>\n\t\tLow quiescent current of 56 mA\n\t<\/li>\n<\/ul>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_ADL5545_Gain_Fre\" class=\"alignnone size-full wp-image-885\" height=\"454\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre.png\" width=\"1747\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre.png 1747w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre-300x77.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre-1024x266.png 1024w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Gain_Fre-250x64.png 250w\" sizes=\"auto, (max-width: 1747px) 100vw, 1747px\" \/><\/a><br \/>\n\tFigure 5: Gain vs. Frequency and Temperature (Click to enlarge)\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_ADL5545_Noise_Fre\" class=\"alignnone size-full wp-image-886\" height=\"456\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre.png\" width=\"1725\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre.png 1725w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre-300x79.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre-1024x270.png 1024w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_ADL5545_Noise_Fre-250x66.png 250w\" sizes=\"auto, (max-width: 1725px) 100vw, 1725px\" \/><\/a><br \/>\n\tFigure 6: Noise Figure vs. Frequency and Temperature (Click to enlarge)\n<\/p>\n<h4>\n\t<strong>Part II: Testing<\/strong><br \/>\n<\/h4>\n<p style=\"text-align: justify;\">\n\tThe preamplifier was tested by measuring the EMI of the 100Mhz Oscillator as Figure 7 and Figure 8. The <a href=\"https:\/\/www.uniteng.com\/index.php\/2013\/05\/30\/measuring-emi-with-homemade-magnetic-field-probe\/\" target=\"_blank\" rel=\"noopener\">Magnetic Field Probe<\/a> was connected to the Channel 1 of the oscilloscope Rigol DS2202 with\/without the&nbsp;preamplifier and the distance between the probe and the Oscillator was fixed.\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_Testing_Env\" class=\"alignnone size-full wp-image-888\" height=\"929\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env.png\" width=\"1236\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env.png 1236w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env-300x225.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env-1024x769.png 1024w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env-250x187.png 250w\" sizes=\"auto, (max-width: 1236px) 100vw, 1236px\" \/><\/a><br \/>\n\tFigure 7: Equipemnts Setting Up\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env2.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_Testing_Env2\" class=\"alignnone size-full wp-image-890\" height=\"833\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env2.png\" width=\"698\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env2.png 698w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env2-251x300.png 251w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_Env2-250x298.png 250w\" sizes=\"auto, (max-width: 698px) 100vw, 698px\" \/><\/a><br \/>\n\t.Figure 8: Measuring the EMI of a 100Mhz Oscillator\n<\/p>\n<p style=\"text-align: justify;\">\n\tWhen there was no preamplifier, the Vpp on the Channel 1 was 122mV.\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_NoPre.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_Testing_NoPre\" class=\"alignnone size-full wp-image-891\" height=\"480\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_NoPre.png\" width=\"799\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_NoPre.png 799w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_NoPre-300x180.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_NoPre-250x150.png 250w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><\/a><br \/>\n\t.Figure 9: The measurement when the probe connecting to the oscilloscope directly (without preamplifier)\n<\/p>\n<p style=\"text-align: justify;\">\n\tWhen the preamplifier of ADL5544 edition used, the Vpp on the Channel 1 was 1.24V.\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5544.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_Testing_ADL5544\" class=\"alignnone size-full wp-image-892\" height=\"480\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5544.png\" width=\"799\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5544.png 799w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5544-300x180.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5544-250x150.png 250w\" sizes=\"auto, (max-width: 799px) 100vw, 799px\" \/><\/a><br \/>\n\tFigure 10: The measurement when using the preamplifier of ADL5544 edition\n<\/p>\n<p>\n\tWhen the preamplifier of ADL5545 edition used, the Vpp on the Channel 1 was 3.40V.\n<\/p>\n<p style=\"text-align: center;\">\n\t<a href=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5545.png\"><img loading=\"lazy\" decoding=\"async\" alt=\"Preamplifier_Testing_ADL5545\" class=\"alignnone size-full wp-image-893\" height=\"480\" src=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5545.png\" width=\"802\" srcset=\"https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5545.png 802w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5545-300x179.png 300w, https:\/\/www.uniteng.com\/wp-content\/uploads\/2013\/08\/Preamplifier_Testing_ADL5545-250x149.png 250w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/a><br \/>\n\tFigure 11: The measurement when using the preamplifier of ADL5545 edition\n<\/p>\n<h4>\n\t<strong>Part III: References<\/strong><br \/>\n<\/h4>\n<p>\n\t[1] ADL5544 Data Sheet. Retrieved August 18, 2013, from http:\/\/www.analog.com\/static\/imported-files\/data_sheets\/ADL5544.PDF (<a href=\"https:\/\/www.uniteng.com\/neildocs\/datasheets\/ADL5544.pdf\" target=\"_blank\" rel=\"noopener\">Local Mirror<\/a>)<br \/>\n\t[2] ADL5545 Data Sheet. Retrieved August 18, 2013, from http:\/\/www.analog.com\/static\/imported-files\/data_sheets\/ADL5545.PDF (<a href=\"https:\/\/www.uniteng.com\/neildocs\/datasheets\/ADL5545.pdf\" target=\"_blank\" rel=\"noopener\">Local Mirror<\/a>)<br \/>\n\t[3] Balun Design. Retrieved July 2, 2013, from http:\/\/www.odyseus.nildram.co.uk\/RFMicrowave_Circuits_Files\/Balun%20Design.pdf (<a href=\"https:\/\/www.uniteng.com\/neildocs\/references\/Balun_Design_odyseus_nildram_co_uk.pdf\" target=\"_blank\" rel=\"noopener\">Local Mirror<\/a>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Part I: Introduction I designed two preamplifiers which can be added to any application needs additional gain. The two designs have the same PCB layout but different IC U1 which is shown in the Figure 1. The PCB is shown in the Figure 2. Figure 1: Schematic of the Preamplifier (ADL5544 for fixed gain of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[5],"tags":[15,17],"class_list":["post-767","post","type-post","status-publish","format-standard","hentry","category-hardware-notes","tag-emi","tag-rf"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"neilhao","author_link":"https:\/\/www.uniteng.com\/index.php\/author\/neilhao\/"},"uagb_comment_info":0,"uagb_excerpt":"Part I: Introduction I designed two preamplifiers which can be added to any application needs additional gain. The two designs have the same PCB layout but different IC U1 which is shown in the Figure 1. The PCB is shown in the Figure 2. Figure 1: Schematic of the Preamplifier (ADL5544 for fixed gain of&hellip;","_links":{"self":[{"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/posts\/767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/comments?post=767"}],"version-history":[{"count":0,"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/posts\/767\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/media?parent=767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/categories?post=767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.uniteng.com\/index.php\/wp-json\/wp\/v2\/tags?post=767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}