{"id":61517,"date":"2026-09-09T12:58:35","date_gmt":"2026-09-09T10:58:35","guid":{"rendered":"https:\/\/www.esz-ag.de\/?page_id=61517"},"modified":"2026-09-11T12:10:36","modified_gmt":"2026-09-11T10:10:36","slug":"phase-noise","status":"publish","type":"page","link":"https:\/\/www.esz-ag.de\/en\/calibration\/phase-noise\/","title":{"rendered":"Phase Noise"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row bg_position=&#8221;right center&#8221; css=&#8221;.vc_custom_1662113468621{margin-bottom: 160px !important;background-position: center !important;background-repeat: no-repeat !important;background-size: contain !important;}&#8221; el_class=&#8221;hero-section-subpage&#8221; responsive_css=&#8221;margin_top_medium:64px&#8221;][vc_column width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1789047599567{margin-bottom: 16px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;]<\/p>\n<p class=\"subline\">Phase Noise<\/p>\n<p>[\/vc_column_text][vc_column_text css=&#8221;.vc_custom_1789047640296{margin-bottom: 24px !important;}&#8221;]<\/p>\n<h1>Greater reliability for your RF applications<\/h1>\n<p>[\/vc_column_text][vc_column_text css=&#8221;.vc_custom_1789047657498{margin-bottom: 32px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;]The requirements placed on modern RF systems are continually increasing. Whether in 5G, radar, satellite communications, semiconductor testing or high-precision time and frequency metrology, frequency and power are no longer the only parameters that matter. Phase noise also plays a decisive role in signal quality, stability and ultimately the performance of the entire system.<\/p>\n<p>This is precisely where esz AG is expanding its RF calibration portfolio. With phase noise calibration, we can now precisely and traceably determine another key parameter of modern signal generators, synthesisers, frequency standards and other RF sources.[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1789121401186{margin-bottom: 48px !important;}&#8221; el_class=&#8221;hero-img&#8221;]<img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1448 size-full\" src=\"https:\/\/www.esz-ag.de\/wp-content\/uploads\/Aufmacherbild-prov.phasenrauschen.png\" alt=\"Kfz-Pr\u00fcftechnik\" width=\"1024\" height=\"469\" title=\"\">[\/vc_column_text][vc_single_image image=&#8221;43517&#8243; el_class=&#8221;bubble-header&#8221;][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1783944294836{margin-bottom: 140px !important;}&#8221;][vc_column][vc_column_text css=&#8221;&#8221;]<p>[vc_row css=\".vc_custom_1691753672475{margin-bottom: 128px !important;}\"][vc_column][vc_row_inner content_placement=\"middle\"][vc_column_inner width=\"1\/2\" el_class=\"service-img\" offset=\"vc_hidden-xs\"][vc_single_image image=\"51159\" img_size=\"full\" style=\"vc_box_rounded\" css=\".vc_custom_1699441614950{padding-right: 32px !important;}\" el_class=\"kalibrierangebot-img\"][\/vc_column_inner][vc_column_inner width=\"1\/2\" offset=\"vc_hidden-xs\"][vc_column_text el_class=\"kalibrierangebot-txt\" css=\".vc_custom_1716372472434{margin-bottom: 32px !important;}\"]<\/p>\r\n<h2>Your calibration offer<\/h2>\r\n<p>We\u2019ll be happy to provide you with a no obligation quote for the calibration of your measuring devices.[\/vc_column_text][vc_raw_html]JTNDYSUyMGlkJTNEJTIybW9kYWxvcGVuJTIyJTIwY2xhc3MlM0QlMjJidG4lMjBidG4tc29saWQlMjBidG4tbGclMjBjaXJjbGUlMjBidG4tYm9yZGVyZWQlMjBib3JkZXItdGhpbiUyMGJ0bi1pY29uLWxlZnQlMjBidG4tb3Blbi1mb3JtJTIyJTIwaHJlZiUzRCUyMmphdmFzY3JpcHQlM0F2b2lkJTI4MCUyOSUyMiUzRVJlcXVlc3QlMjBub3clM0MlMkZhJTNF[\/vc_raw_html][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\r\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=&#8221;ce-img-text&#8221;][vc_column css=&#8221;.vc_custom_1655063802147{margin-bottom: 140px !important;}&#8221;][vc_row_inner content_placement=&#8221;middle&#8221;][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1789047687523{margin-bottom: 32px !important;}&#8221;]<\/p>\n<h2 class=\"PDq2pG_selectionAnchorContainer\" data-section-id=\"1pawkq\" data-start=\"1043\" data-end=\"1101\">A broad measurement range for demanding RF applications<\/h2>\n<p data-start=\"1103\" data-end=\"1199\">Our specially designed measurement systems enable phase noise measurements across a broad range:<\/p>\n<ul data-start=\"1201\" data-end=\"1328\">\n<li data-section-id=\"1nt0lsg\" data-start=\"1201\" data-end=\"1240\"><strong data-start=\"1203\" data-end=\"1222\">5 MHz to 40 GHz<\/strong> carrier frequency<\/li>\n<li data-section-id=\"3lzgj9\" data-start=\"1241\" data-end=\"1279\"><strong data-start=\"1243\" data-end=\"1262\">10 Hz to 30 MHz<\/strong> offset frequency<\/li>\n<li data-section-id=\"1au5gep\" data-start=\"1280\" data-end=\"1328\">measurement capability down to <strong data-start=\"1282\" data-end=\"1328\">-186 dBc\/Hz<\/strong><\/li>\n<\/ul>\n<p data-start=\"1330\" data-end=\"1662\">By using modern cross-correlation measurement technology with two independent measurement paths, the inherent noise of the measurement system is largely suppressed. This makes it possible to measure both close-to-carrier and far-from-carrier noise components and to reliably characterise modern ultra-low-phase-noise signal sources.<\/p>\n<p data-start=\"1664\" data-end=\"1960\">Our measurement systems are also installed on vibration-isolated platforms with a resonance frequency below 0.8 Hz. This reduces the influence of mechanical disturbances and contributes to high measurement stability and low measurement uncertainty, particularly for close-to-carrier measurements.<\/p>\n<p>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243; el_class=&#8221;img-right&#8221;][vc_single_image image=&#8221;61597&#8243; img_size=&#8221;full&#8221; style=&#8221;vc_box_rounded&#8221; css=&#8221;&#8221;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row disable_element=&#8221;yes&#8221; el_class=&#8221;ce-img-text&#8221; css=&#8221;.vc_custom_1788950969713{margin-top: 35px !important;}&#8221;][vc_column css=&#8221;.vc_custom_1655063802147{margin-bottom: 140px !important;}&#8221;][vc_row_inner][vc_column_inner][vc_column_text css=&#8221;.vc_custom_1785912079932{margin-bottom: 40px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;][vc_row][vc_column][vc_row_inner][vc_column_inner width=\"1\/2\" offset=\"vc_hidden-lg vc_hidden-md vc_hidden-sm\"][vc_column_text css=\".vc_custom_1696580895119{margin-bottom: 32px !important;}\" el_class=\"home-service-text\"]\r\n<p class=\"subline\">Service<\/p>\r\n\r\n<h2>Logistik Expert<\/h2>\r\nMit unserem firmeneigenen Abhol- und Lieferservice sind Ihre empfindlichen Pr\u00fcfmittel immer sicher unterwegs. Der Transport erfolgt in Schutzvorrichtungen, durch geschulte Fahrer und auf direktem Wege vom und zum Kalibrierlabor.[\/vc_column_text][\/vc_column_inner][vc_column_inner width=\"1\/2\" align=\"text-center\" offset=\"vc_hidden-lg vc_hidden-md vc_hidden-sm\"][vc_single_image image=\"51209\" img_size=\"full\" style=\"vc_box_rounded\"]<a href=\"https:\/\/www.esz-ag.de\/service\/abhol-und-lieferservice\/\" title=\"Abhol- &amp; Lieferservice\" class=\"btn btn-solid btn-sm circle btn-bordered border-thin btn-icon-left service-block-btn ld_button_6aa3fefc97bfc\">\n\t<span>\n\t\t\n\t\t\t\t\t<span class=\"btn-txt\">Jetzt buchen<\/span>\n\t\t\t\n\t<span class=\"btn-icon\"><i class=\"fas fa-shipping-fast\"><\/i><\/span>\t\t\t<\/span>\n<\/a>\n[\/vc_column_inner][\/vc_row_inner][vc_row_inner content_placement=\"middle\"][vc_column_inner width=\"1\/2\" el_class=\"service-img\" offset=\"vc_hidden-xs\"][vc_single_image image=\"50940\" img_size=\"full\" style=\"vc_box_rounded\"][\/vc_column_inner][vc_column_inner width=\"1\/2\" offset=\"vc_hidden-xs\"][vc_column_text css=\".vc_custom_1696580895119{margin-bottom: 32px !important;}\" el_class=\"home-service-text\"]\r\n<p class=\"subline\">Service<\/p>\r\n\r\n<h2>Logistik Expert<\/h2>\r\nMit unserem firmeneigenen Abhol- und Lieferservice sind Ihre empfindlichen Pr\u00fcfmittel immer sicher unterwegs. Der Transport erfolgt in Schutzvorrichtungen, durch geschulte Fahrer und auf direktem Wege vom und zum Kalibrierlabor.[\/vc_column_text]<a href=\"https:\/\/www.esz-ag.de\/service\/abhol-und-lieferservice\/\" title=\"Abhol- &amp; Lieferservice\" class=\"btn btn-solid btn-sm circle btn-bordered border-thin btn-icon-left service-block-btn ld_button_6aa3fefc97f72 vc_custom_1699983086931\">\n\t<span>\n\t\t\n\t\t\t\t\t<span class=\"btn-txt\">Mehr erfahren<\/span>\n\t\t\t\n\t<span class=\"btn-icon\"><i class=\"fas fa-shipping-fast\"><\/i><\/span>\t\t\t<\/span>\n<\/a>\n[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1788950978259{margin-bottom: 140px !important;}&#8221;][vc_column offset=&#8221;vc_col-lg-offset-2 vc_col-lg-8 vc_col-md-offset-1 vc_col-md-10 vc_col-xs-12&#8243; el_class=&#8221;card-white box-benefits&#8221;][vc_row_inner css=&#8221;.vc_custom_1687864985812{margin-bottom: 24px !important;background-color: #fec804 !important;}&#8221;][vc_column_inner css=&#8221;.vc_custom_1687864955833{padding-top: 16px !important;padding-right: 16px !important;padding-bottom: 16px !important;padding-left: 16px !important;}&#8221;][vc_column_text css=&#8221;&#8221;]<\/p>\n<h2>Your benefits<\/h2>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner css=&#8221;.vc_custom_1687864964004{padding-right: 16px !important;padding-left: 16px !important;}&#8221;][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;&#8221;]<\/p>\n<ul>\n<li>High measurement sensitivity down to<br \/>\n-186 dBc\/Hz<\/li>\n<li>Manufacturer-independent calibration<\/li>\n<li>Broad measurement range for modern RF applications<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][vc_column_text css=&#8221;.vc_custom_1789048243814{margin-bottom: 24px !important;}&#8221;]<\/p>\n<ul>\n<li>ISO\/factory calibration or DAkkS-accredited calibration in accordance with DIN EN ISO\/IEC 17025:2018<\/li>\n<li>Full service: calibration, asset management and repair from a single source<\/li>\n<\/ul>\n<p>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row disable_element=&#8221;yes&#8221; el_class=&#8221;card-white&#8221; css=&#8221;.vc_custom_1789121431041{margin-top: 35px !important;margin-bottom: 120px !important;background-color: #EDF1F4 !important;}&#8221; el_id=&#8221;whitepaper&#8221;][vc_column css=&#8221;.vc_custom_1788947582316{margin-bottom: 70px !important;}&#8221; offset=&#8221;vc_col-lg-offset-2 vc_col-lg-8 vc_col-md-offset-1 vc_col-md-10&#8243;][vc_row_inner][vc_column_inner][vc_column_text css=&#8221;.vc_custom_1789048571478{margin-bottom: 40px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;]<\/p>\n<h2>How do you measure extremely low phase noise?<\/h2>\n<p><span style=\"font-style: normal !important; font-weight: normal !important;\">Why does measuring particularly low-noise signal sources present such a metrological challenge? How does cross-correlation work? And why can even mechanical vibrations affect the measurement result?<\/span><\/p>\n<p><span style=\"font-style: normal !important; font-weight: normal !important;\"><br \/>\nYou will find the answers presented clearly and practically in our white paper: \u201eKalibrierung von Phasenrauschen \u2013 Pr\u00e4zision f\u00fcr moderne HF-Systeme\u201c (German)<\/span>[\/vc_column_text][\/vc_column_inner][\/vc_row_inner]<a href=\"#\" class=\"btn btn-solid btn-sm circle btn-bordered border-thin btn-icon-left home-jobs-btn ld_button_6aa3fefc981c4 vc_custom_1788959072519\">\n\t<span>\n\t\t\n\t\t\t\t\t<span class=\"btn-txt\">Zum Whitepaper<\/span>\n\t\t\t\n\t<span class=\"btn-icon\"><i class=\"fa fa-solid fa-circle-down\"><\/i><\/span>\t\t\t<\/span>\n<\/a>\n[\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1776337875714{margin-bottom: 160px !important;padding-right: 24px !important;padding-left: 24px !important;}&#8221; el_class=&#8221;row-accordion&#8221;][vc_column offset=&#8221;vc_col-lg-offset-2 vc_col-lg-8 vc_col-md-offset-1 vc_col-md-10&#8243; el_class=&#8221;card-white card-accordion&#8221; responsive_css=&#8221;padding_top_medium:24px|padding_right_medium:66px|padding_bottom_medium:48px|padding_left_medium:66px&#8221; css=&#8221;.vc_custom_1776337968011{margin-right: 8px !important;margin-left: 8px !important;}&#8221;][vc_column_text css=&#8221;.vc_custom_1789047776356{margin-bottom: 40px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;]<\/p>\n<h2 style=\"text-align: center;\">More Information<\/h2>\n<p>[\/vc_column_text]<div class=\"accordion accordion-md vc_accordion_6aa3fefc9880b\" id=\"vc_accordion_6aa3fefc9880b\" role=\"tablist\" aria-multiselectable=\"true\">\n\n\t<div class=\"accordion-item panel  active \">\n\n\t\t<div class=\"accordion-heading\" role=\"tab\" id=\"heading_was-ist-phasenrauschen\">\n\t\t\t<h3 class=\"accordion-title\">\n\t\t\t\t<a class=\"\" data-toggle=\"collapse\" data-parent=\"#vc_accordion_6aa3fefc9880b\" href=\"#was-ist-phasenrauschen\" aria-expanded=\"true\" aria-controls=\"was-ist-phasenrauschen\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\tWhat is phase noise?\n\t\t\t\t\t\t\t\t\t\t<span class=\"accordion-expander\">\n\t\t\t\t\t\t<i class=\"fa fa-plus\"><\/i>\n\t\t\t\t\t\t<i class=\"fa fa-minus\"><\/i>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\n\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t<\/h3>\n\t\t<\/div>\n\n\t\t<div id=\"was-ist-phasenrauschen\" class=\"accordion-collapse collapse in\" role=\"tabpanel\" aria-labelledby=\"heading_was-ist-phasenrauschen\">\n\t\t\t<div class=\"accordion-content\">\n\t\t\t<p>[vc_column_text css=&#8221;&#8221;]An ideal periodic signal would have a perfectly stable phase. Real oscillators and signal sources deviate from this ideal: their phase is subject to small fluctuations over time. In the frequency domain, these fluctuations appear as noise components around the carrier signal. This is referred to as phase noise. Phase noise is typically specified as noise power spectral density relative to the carrier in dBc\/Hz and is considered as a function of the frequency separation from the carrier, known as the offset frequency. A phase noise value should therefore not be considered in isolation. Among other factors, the carrier frequency and offset frequency at which it was determined are crucial. One of the relevant references for the definition of phase noise is IEEE Std 1139\u2122-2022, \u201cStandard Definitions of Physical Quantities for Fundamental Frequency and Time Metrology \u2013 Random Instabilities\u201d.[\/vc_column_text]<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t<div class=\"accordion-item panel  \">\n\n\t\t<div class=\"accordion-heading\" role=\"tab\" id=\"heading_Frequenz-Leistung-kalibrieren\">\n\t\t\t<h3 class=\"accordion-title\">\n\t\t\t\t<a class=\"collapsed\" data-toggle=\"collapse\" data-parent=\"#vc_accordion_6aa3fefc9880b\" href=\"#Frequenz-Leistung-kalibrieren\" aria-expanded=\"false\" aria-controls=\"Frequenz-Leistung-kalibrieren\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\tWhy is it not sufficient to calibrate only frequency and power?\n\t\t\t\t\t\t\t\t\t\t<span class=\"accordion-expander\">\n\t\t\t\t\t\t<i class=\"fa fa-plus\"><\/i>\n\t\t\t\t\t\t<i class=\"fa fa-minus\"><\/i>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\n\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t<\/h3>\n\t\t<\/div>\n\n\t\t<div id=\"Frequenz-Leistung-kalibrieren\" class=\"accordion-collapse collapse\" role=\"tabpanel\" aria-labelledby=\"heading_Frequenz-Leistung-kalibrieren\">\n\t\t\t<div class=\"accordion-content\">\n\t\t\t<p>[vc_column_text css=&#8221;&#8221;]Frequency and RF power are established measurands used for the characterisation and calibration of signal sources. However, they do not fully describe the spectral purity or short-term phase stability of a source.<\/p>\n<p>This is where phase noise measurement complements the conventional RF measurands. For operators of demanding RF systems, it provides a more comprehensive picture of the characteristics of the signal source being used. Frequency + power + phase noise therefore enable a significantly more comprehensive characterisation of modern RF sources.[\/vc_column_text]<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t<div class=\"accordion-item panel  \">\n\n\t\t<div class=\"accordion-heading\" role=\"tab\" id=\"heading_geraete-phasenrauschen\">\n\t\t\t<h3 class=\"accordion-title\">\n\t\t\t\t<a class=\"collapsed\" data-toggle=\"collapse\" data-parent=\"#vc_accordion_6aa3fefc9880b\" href=\"#geraete-phasenrauschen\" aria-expanded=\"false\" aria-controls=\"geraete-phasenrauschen\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\tWhich devices should be assessed for phase noise?\n\t\t\t\t\t\t\t\t\t\t<span class=\"accordion-expander\">\n\t\t\t\t\t\t<i class=\"fa fa-plus\"><\/i>\n\t\t\t\t\t\t<i class=\"fa fa-minus\"><\/i>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\n\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t<\/h3>\n\t\t<\/div>\n\n\t\t<div id=\"geraete-phasenrauschen\" class=\"accordion-collapse collapse\" role=\"tabpanel\" aria-labelledby=\"heading_geraete-phasenrauschen\">\n\t\t\t<div class=\"accordion-content\">\n\t\t\t<p>[vc_column_text css=&#8221;&#8221;]<\/p>\n<p class=\"PDq2pG_selectionAnchorContainer\" data-start=\"3944\" data-end=\"4030\">Phase noise is relevant to a wide range of modern RF sources, including in particular:<\/p>\n<ul data-start=\"4032\" data-end=\"5058\">\n<li data-section-id=\"izd699\" data-start=\"4032\" data-end=\"4259\"><strong data-start=\"4034\" data-end=\"4071\">Signal generators and RF sources:<\/strong><br data-start=\"4071\" data-end=\"4074\" \/>These generate the RF signals required for development, testing and operation and, particularly in demanding applications, must provide a correspondingly high level of signal quality.<\/li>\n<li data-section-id=\"1pib1zc\" data-start=\"4261\" data-end=\"4373\"><strong data-start=\"4263\" data-end=\"4283\">RF synthesisers:<\/strong><br data-start=\"4283\" data-end=\"4286\" \/>These are used wherever frequencies need to be generated and set with high precision.<\/li>\n<li data-section-id=\"1cyadop\" data-start=\"4375\" data-end=\"4552\"><strong data-start=\"4377\" data-end=\"4426\">Frequency standards and frequency references:<\/strong><br data-start=\"4426\" data-end=\"4429\" \/>These include, for example, OCXO- and rubidium-based systems used for synchronisation and time distribution applications.<\/li>\n<li data-section-id=\"1240j5x\" data-start=\"4554\" data-end=\"4671\"><strong data-start=\"4556\" data-end=\"4583\">Local oscillators (LO):<\/strong><br data-start=\"4583\" data-end=\"4586\" \/>These are key components in numerous radar, communications and measurement systems.<\/li>\n<li data-section-id=\"1jhsprq\" data-start=\"4673\" data-end=\"4888\"><strong data-start=\"4675\" data-end=\"4728\">Signal sources in automated test equipment (ATE):<\/strong><br data-start=\"4728\" data-end=\"4731\" \/>Particularly in complex RF test systems, reproducible and reliable signal source characteristics can be crucial to the quality of the overall test process.<\/li>\n<li data-section-id=\"cvnvvf\" data-start=\"4890\" data-end=\"5058\"><strong data-start=\"4892\" data-end=\"4952\">Frequency sources for satellite, radar and GNSS systems:<\/strong><br data-start=\"4952\" data-end=\"4955\" \/>These applications combine high requirements for frequency stability, signal quality and reliability.<\/li>\n<\/ul>\n<p>[\/vc_column_text]<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n\t<div class=\"accordion-item panel  \">\n\n\t\t<div class=\"accordion-heading\" role=\"tab\" id=\"heading_Cross-Correlation-bei-Phasenrauschmessung\">\n\t\t\t<h3 class=\"accordion-title\">\n\t\t\t\t<a class=\"collapsed\" data-toggle=\"collapse\" data-parent=\"#vc_accordion_6aa3fefc9880b\" href=\"#Cross-Correlation-bei-Phasenrauschmessung\" aria-expanded=\"false\" aria-controls=\"Cross-Correlation-bei-Phasenrauschmessung\">\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\tWhat is cross-correlation in phase noise measurement?\n\t\t\t\t\t\t\t\t\t\t<span class=\"accordion-expander\">\n\t\t\t\t\t\t<i class=\"fa fa-plus\"><\/i>\n\t\t\t\t\t\t<i class=\"fa fa-minus\"><\/i>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\n\t\t\t\t<\/a>\n\t\t\t\t\n\t\t\t<\/h3>\n\t\t<\/div>\n\n\t\t<div id=\"Cross-Correlation-bei-Phasenrauschmessung\" class=\"accordion-collapse collapse\" role=\"tabpanel\" aria-labelledby=\"heading_Cross-Correlation-bei-Phasenrauschmessung\">\n\t\t\t<div class=\"accordion-content\">\n\t\t\t<p>[vc_column_text css=&#8221;&#8221;]<\/p>\n<p data-start=\"5119\" data-end=\"5334\">With the cross-correlation method, two independent measurement paths measure the phase noise of the source under test. Each path has its own inherent noise, which is largely uncorrelated with that of the other path.<\/p>\n<p data-start=\"5336\" data-end=\"5526\">By mathematically correlating the measurement results, these uncorrelated noise components can be increasingly suppressed. The common signal \u2014 the actual phase noise of the source \u2014 remains.<\/p>\n<p data-start=\"5528\" data-end=\"5539\">Put simply:<\/p>\n<p data-start=\"5541\" data-end=\"5806\">Two independent measurement paths help distinguish the inherent noise of the measurement system from the actual noise of the signal source. This makes it possible to reliably characterise modern ultra-low-phase-noise signal sources with very low phase noise levels.<\/p>\n<p data-start=\"5808\" data-end=\"5977\" data-is-last-node=\"\" data-is-only-node=\"\">For this purpose, esz AG uses a specially designed reference system based on state-of-the-art phase noise measurement technology, including a Rohde &amp; Schwarz FSWP50.<\/p>\n<p>[\/vc_column_text]<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t<\/div>\n<\/div>[\/vc_column][\/vc_row][vc_row disable_element=&#8221;yes&#8221; css=&#8221;.vc_custom_1785920901670{margin-bottom: 10px !important;padding-right: 24px !important;padding-left: 24px !important;}&#8221;][vc_column offset=&#8221;vc_col-lg-offset-2 vc_col-lg-8 vc_col-md-offset-1 vc_col-md-10&#8243; responsive_css=&#8221;padding_top_medium:24px|padding_right_medium:66px|padding_bottom_medium:48px|padding_left_medium:66px&#8221; css=&#8221;.vc_custom_1785850648086{margin-right: 8px !important;margin-left: 8px !important;}&#8221;][vc_column_text css=&#8221;.vc_custom_1785850937995{margin-bottom: 10px !important;}&#8221; el_class=&#8221;hero-section-text&#8221;]* Die Unternehmen werden ausschlie\u00dflich als Beispiele f\u00fcr unsere Erfahrung in der Medizintechnik genannt. Mit der Nennung ist keine ausdr\u00fcckliche Empfehlung, Kooperation oder Unterst\u00fctzung dieser Ver\u00f6ffentlichung durch die genannten Unternehmen verbunden.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row bg_position=&#8221;right center&#8221; css=&#8221;.vc_custom_1662113468621{margin-bottom: 160px !important;background-position: center !important;background-repeat: no-repeat !important;background-size: contain !important;}&#8221; el_class=&#8221;hero-section-subpage&#8221; responsive_css=&#8221;margin_top_medium:64px&#8221;][vc_column width=&#8221;1\/2&#8243;][vc_column_text&#8230;<\/p>\n","protected":false},"author":22,"featured_media":0,"parent":54121,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"class_list":["post-61517","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/pages\/61517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/comments?post=61517"}],"version-history":[{"count":9,"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/pages\/61517\/revisions"}],"predecessor-version":[{"id":61599,"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/pages\/61517\/revisions\/61599"}],"up":[{"embeddable":true,"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/pages\/54121"}],"wp:attachment":[{"href":"https:\/\/www.esz-ag.de\/en\/wp-json\/wp\/v2\/media?parent=61517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}