{"id":132,"date":"2014-02-28T23:03:56","date_gmt":"2014-02-28T22:03:56","guid":{"rendered":"http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/?p=132"},"modified":"2015-11-17T13:52:12","modified_gmt":"2015-11-17T12:52:12","slug":"mmw-measurement-in-frequency-domain","status":"publish","type":"post","link":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/mmw-measurement-in-frequency-domain\/","title":{"rendered":"MMW measurement in Frequency domain"},"content":{"rendered":"<div class=\"table\">\n<div class=\"tr\">\n<div class=\"td photo\"><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_8.png\" alt=\"\" \/><\/div>\n<div class=\"td info\">\n<p>M1. MMW measurement in frequency domain (February 2014) based on ZVA67 and Quinstar power amplifier QPW-50662330-C1 (purchased from grant funds).<\/p>\n<\/div>\n<\/div>\n<p><!--more--><\/p>\n<p>The scheme of the measurement workplace is shown in <a href=\"#fig1\">Figure 1<\/a>. The transmission coefficient corresponding to the s21 scattering parameter between two antennas in the frequency band 55\u201365 GHz was measured utilizing a four-port vector network analyzer R&amp;S ZVA67 (VNA). The dynamic range of the VNA was increased utilizing a broadband power amplifier on the transmitting side. The measurement was carried out in the Skoda Octavia 1.8 TSI car. In order to avoid a degradation of the measured phase accuracy due to movements of the RX a TX antenna, phase-stable coaxial cables were used and included in the calibration process. Open-ended waveguide antennas were used as a transmitting and receiving antenna. The measurement setup was calibrated for zero transmission while the open-ended waveguide antennas were connected to each other.<\/p>\n<p><img id=\"fig1\" src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_1.jpg\" alt=\"\" width=\"400px\" \/><\/p>\n<p>The TX antenna was placed at several locations inside the car compartment (on driver\u2019s and passenger\u2019s seat) and the RX antenna was placed on the left and right side of the dashboard, top corners of the windshield, and at the rear part of the ceiling. The channel measurements were carried out for both LOS and NLOS scenarios. NLOS was caused by the backrest of the seats and\/or persons sitting inside the vehicle. For details of antenna placement please refer to <a href=\"#ref1\">[1]<\/a>.<\/p>\n<p><img loading=\"lazy\" src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_1_2.jpg\" alt=\"\" width=\"444\" height=\"166\" \/><\/p>\n<p><b>Examples of measured scenarios:<\/b><\/p>\n<ul>\n<li>Position \u2116 1 of Rx antenna: <a href=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/files\/1.csv\"  download> Download <\/a> <\/li>\n<li>Position \u2116 5 of Rx antenna: <a href=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/files\/5.csv\" download> Download <\/a> <\/li>\n<li>Position \u2116 21 of Rx antenna: <a href=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/files\/21.csv\" download> Download <\/a> <\/li>\n<\/ul>\n<p><b>VNA specifications for MMW measurement:<\/b><\/p>\n<ul>\n<li>Start frequency 55 GHz<\/li>\n<li>Stop frequency 65 GHz<\/li>\n<li>Bandwidth 10 GHz<\/li>\n<li>Frequency step size 10 MHz<\/li>\n<li>1001 points<\/li>\n<li>IF bandwidth 100 Hz<\/li>\n<li>Dynamic range &gt; 60 dB<\/li>\n<li>Output power 5 dBm<\/li>\n<\/ul>\n<p><b>Equipment of measuring workplace:<\/b><\/p>\n<ul>\n<li><a href=\"http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/measurement-1\/\" title=\"R&#038;S ZVA67 Vector Network Analyzer\">Vector Network Analyzer R&amp;S ZVA67<\/a><\/li>\n<li><a href=\"http:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/quinstar-power-amplifier-qpw-50662330\/\" title=\"Quinstar power amplifier QPW-50662330\">MMW broadband power amplifier QuinStar QPW-50662330-C1<\/a><\/li>\n<li>DC power supply M10-DP-305E<\/li>\n<li>Phase-stable coaxial cables MEGAPHASE: TM67-V1V1-98, TM67-V1V1-138<\/li>\n<li>Open-ended waveguide antennas QuinStar QWS-V02000<\/li>\n<li>Waveguide components QuinStar: QWB-V90ER, QWB-V90HR, QWT-V90RR<\/li>\n<li>WR-15 to 1.85mm female adapters QuinStar QWA-15R18F00<\/li>\n<li>1.85 mm female to 1.85 mm female adapters<\/li>\n<li>JOBY GorillaPod<\/li>\n<li>Vacuum glass holder<\/li>\n<\/ul>\n<table>\n<tbody>\n<tr>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_3.png\" alt=\"\" \/><\/td>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_6.png\" alt=\"\" \/><\/td>\n<\/tr>\n<tr>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_5.png\" alt=\"\" \/><\/td>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_7.png\" alt=\"\" \/><\/td>\n<\/tr>\n<tr>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_4.png\" alt=\"\" \/><\/td>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_9.png\" alt=\"\" \/><\/td>\n<\/tr>\n<tr>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_10.png\" alt=\"\" \/><\/td>\n<td><img src=\"\/GACR-13-38735S\/wp-content\/themes\/vantage\/images\/measurements\/mes_140228\/fig_2.png\" alt=\"\" \/><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><b>Related publications:<\/b><\/p>\n<table>\n<tbody>\n<tr id=\"ref1\">\n<td>[1]<\/td>\n<td>\n<div class=\"autors\">BLUMENSTEIN, J., MIKUL\u00c1\u0160EK, T., MAR\u0160\u00c1LEK, R., PROKE\u0160, A., ZEMEN, T., MECKLENBR\u00c4UKER, C.<\/div>\n<div class=\"title\">In-vehicle mm- Wave Channel Model and Measurement<\/div>\n<div class=\"info\">In Proc. of IEEE 80th Vehicular Technology Conference (VTC Fall). Vancouver, Canada, 2014, p. 1-5, ISBN: 978-1-4799-4450-7.<\/div>\n<\/td>\n<\/tr>\n<tr id=\"ref2\">\n<td>[2]<\/td>\n<td>\n<div class=\"autors\">BLUMENSTEIN, J.<\/div>\n<div class=\"title\">Intra-Vehicular Path Loss Comparison of UWB Channel for 3\u201311 GHz and 55\u201365 GHz<\/div>\n<div class=\"info\">IEEE International Conference on Ubiquitous Wireless Broadband ICUWB\u20192015, accepted for publication.<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>M1. MMW measurement in frequency domain (February 2014) based on ZVA67 and Quinstar power amplifier QPW-50662330-C1 (purchased from grant funds).<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false},"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/posts\/132"}],"collection":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/comments?post=132"}],"version-history":[{"count":0,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/posts\/132\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/media?parent=132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/categories?post=132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.radio.feec.vutbr.cz\/GACR-13-38735S\/wp-json\/wp\/v2\/tags?post=132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}