Short-slot Hybrid Coupler Using Linear Taper in W-band
-We have designed and fabricated a broadband short-slot hybrid coupler using a two-stage linear taper in W-band. The coupler consists of two metal pieces split at the edge of the narrow wall of the waveguide, which makes it possible to use simple direct machining for fabrication. The electrical perf...
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| Veröffentlicht in: | Journal of infrared, millimeter and terahertz waves millimeter and terahertz waves, 2013-12, Vol.34 (12), p.815-823 |
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| container_end_page | 823 |
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| container_issue | 12 |
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| container_title | Journal of infrared, millimeter and terahertz waves |
| container_volume | 34 |
| creator | Kuroiwa, Koichi Gonzalez, Alvaro Koyano, Makoto Kojima, Takafumi Fujii, Yasunori Uzawa, Yoshinori Ogawa, Hideo |
| description | -We have designed and fabricated a broadband short-slot hybrid coupler using a two-stage linear taper in W-band. The coupler consists of two metal pieces split at the edge of the narrow wall of the waveguide, which makes it possible to use simple direct machining for fabrication. The electrical performance of the coupler was measured by a Vector Network Analyzer (VNA) at room temperature. The results showed excellent performance as designed: amplitude imbalance between the two output ports of ≤ 1 dB, phase difference between the output ports with respect to 90° < 3°, input return loss < –15 dB, and isolation < –15 dB across the measured frequency range of 85-110 GHz. The short-slot hybrid coupler was used in a balanced Superconductor-Insulator-Superconductor (SIS) mixer at 4 K. The noise performance was almost the same as that of the two single-ended mixers used in the balanced mixer. These results indicate that our short-slot hybrid coupler has great potential for practical applications, such as at millimeter- and submillimeter-waves. |
| doi_str_mv | 10.1007/s10762-013-0030-3 |
| format | Article |
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The coupler consists of two metal pieces split at the edge of the narrow wall of the waveguide, which makes it possible to use simple direct machining for fabrication. The electrical performance of the coupler was measured by a Vector Network Analyzer (VNA) at room temperature. The results showed excellent performance as designed: amplitude imbalance between the two output ports of ≤ 1 dB, phase difference between the output ports with respect to 90° < 3°, input return loss < –15 dB, and isolation < –15 dB across the measured frequency range of 85-110 GHz. The short-slot hybrid coupler was used in a balanced Superconductor-Insulator-Superconductor (SIS) mixer at 4 K. The noise performance was almost the same as that of the two single-ended mixers used in the balanced mixer. 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The coupler consists of two metal pieces split at the edge of the narrow wall of the waveguide, which makes it possible to use simple direct machining for fabrication. The electrical performance of the coupler was measured by a Vector Network Analyzer (VNA) at room temperature. The results showed excellent performance as designed: amplitude imbalance between the two output ports of ≤ 1 dB, phase difference between the output ports with respect to 90° < 3°, input return loss < –15 dB, and isolation < –15 dB across the measured frequency range of 85-110 GHz. The short-slot hybrid coupler was used in a balanced Superconductor-Insulator-Superconductor (SIS) mixer at 4 K. The noise performance was almost the same as that of the two single-ended mixers used in the balanced mixer. These results indicate that our short-slot hybrid coupler has great potential for practical applications, such as at millimeter- and submillimeter-waves.</description><subject>Balancing</subject><subject>Classical Electrodynamics</subject><subject>Electrical Engineering</subject><subject>Electronics and Microelectronics</subject><subject>Engineering</subject><subject>Instrumentation</subject><issn>1866-6892</issn><issn>1866-6906</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><recordid>eNp9kDFPwzAQhS0EEqXwA9gyshjOcWzHI6qAVqrEQCtGy3GuJVVqBzsZ-u9JFVi55U6n9570PkLuGTwyAPWUGCiZU2CcAnCg_ILMWCkllRrk5d9d6vya3KR0AJBFoeWMyI-vEHua2tBny1MVmzpbhKFrMWbb1Ph9tm482phtbDe-Gp990sr6-pZc7Wyb8O53z8n29WWzWNL1-9tq8bymjsuip5VQ4HKQAiUTXBdKl0oXGnK0NXIUmjmuUJVQFnntBHDNdtw6VzrJkY8zJw9TbhfD94CpN8cmOWxb6zEMyTABkgvQXIxSNkldDClF3JkuNkcbT4aBOTMyEyMzMjJnRuYcn0-eNGr9HqM5hCH6sdE_ph9HsWaL</recordid><startdate>20131201</startdate><enddate>20131201</enddate><creator>Kuroiwa, Koichi</creator><creator>Gonzalez, Alvaro</creator><creator>Koyano, Makoto</creator><creator>Kojima, Takafumi</creator><creator>Fujii, Yasunori</creator><creator>Uzawa, Yoshinori</creator><creator>Ogawa, Hideo</creator><general>Springer US</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20131201</creationdate><title>Short-slot Hybrid Coupler Using Linear Taper in W-band</title><author>Kuroiwa, Koichi ; Gonzalez, Alvaro ; Koyano, Makoto ; Kojima, Takafumi ; Fujii, Yasunori ; Uzawa, Yoshinori ; Ogawa, Hideo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-b570c2065e615394798794902eade3e591c37e780842dc50391f3acc8c63e3333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Balancing</topic><topic>Classical Electrodynamics</topic><topic>Electrical Engineering</topic><topic>Electronics and Microelectronics</topic><topic>Engineering</topic><topic>Instrumentation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kuroiwa, Koichi</creatorcontrib><creatorcontrib>Gonzalez, Alvaro</creatorcontrib><creatorcontrib>Koyano, Makoto</creatorcontrib><creatorcontrib>Kojima, Takafumi</creatorcontrib><creatorcontrib>Fujii, Yasunori</creatorcontrib><creatorcontrib>Uzawa, Yoshinori</creatorcontrib><creatorcontrib>Ogawa, Hideo</creatorcontrib><collection>Springer Open Access</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of infrared, millimeter and terahertz waves</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kuroiwa, Koichi</au><au>Gonzalez, Alvaro</au><au>Koyano, Makoto</au><au>Kojima, Takafumi</au><au>Fujii, Yasunori</au><au>Uzawa, Yoshinori</au><au>Ogawa, Hideo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Short-slot Hybrid Coupler Using Linear Taper in W-band</atitle><jtitle>Journal of infrared, millimeter and terahertz waves</jtitle><stitle>J Infrared Milli Terahz Waves</stitle><date>2013-12-01</date><risdate>2013</risdate><volume>34</volume><issue>12</issue><spage>815</spage><epage>823</epage><pages>815-823</pages><issn>1866-6892</issn><eissn>1866-6906</eissn><abstract>-We have designed and fabricated a broadband short-slot hybrid coupler using a two-stage linear taper in W-band. The coupler consists of two metal pieces split at the edge of the narrow wall of the waveguide, which makes it possible to use simple direct machining for fabrication. The electrical performance of the coupler was measured by a Vector Network Analyzer (VNA) at room temperature. The results showed excellent performance as designed: amplitude imbalance between the two output ports of ≤ 1 dB, phase difference between the output ports with respect to 90° < 3°, input return loss < –15 dB, and isolation < –15 dB across the measured frequency range of 85-110 GHz. The short-slot hybrid coupler was used in a balanced Superconductor-Insulator-Superconductor (SIS) mixer at 4 K. The noise performance was almost the same as that of the two single-ended mixers used in the balanced mixer. 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| subjects | Balancing Classical Electrodynamics Electrical Engineering Electronics and Microelectronics Engineering Instrumentation |
| title | Short-slot Hybrid Coupler Using Linear Taper in W-band |
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