Design of Wideband Waveguide Hybrid With Ultra-Low Amplitude Imbalance
We present a design and synthesis procedure for a new 90 ° waveguide hybrid with ultra-low amplitude imbalance. This novel hybrid design is based on Reed's multiple branch waveguide hybrid. The primary feature of this quadrature hybrid design is the introduction of a controllable ripple in the...
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| Veröffentlicht in: | IEEE transactions on terahertz science and technology 2016-01, Vol.6 (1), p.83-90 |
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| container_title | IEEE transactions on terahertz science and technology |
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| creator | Rashid, Hawal Desmaris, Vincent Belitsky, Victor Ruf, Marcel Bednorz, Thilo Henkel, Andreas |
| description | We present a design and synthesis procedure for a new 90 ° waveguide hybrid with ultra-low amplitude imbalance. This novel hybrid design is based on Reed's multiple branch waveguide hybrid. The primary feature of this quadrature hybrid design is the introduction of a controllable ripple in the operational band by, firstly changing the heights of the input and output branches and, secondly, by introducing three waveguide-height discontinuity sections placed symmetrically in the main waveguide. This layout allows ultra-low amplitude imbalance over a wide operational band. At the same time, it permits a greater input/output branch height as compared to the Reed's 5-branch waveguide hybrid, which should ease fabrication for short-mm and sub-mm wavelengths. This design concept is demonstrated through a 90 ° waveguide hybrid for the 159-216 GHz band (30% fractional bandwidth). Our simulations indicate that the amplitude imbalance of the hybrid is better than 0.2 dB over the most of the 159-216 GHz band with a phase imbalance better than ±4 ° . Experimental verification of the hybrid shows excellent agreement with the simulations. |
| doi_str_mv | 10.1109/TTHZ.2015.2502070 |
| format | Article |
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This novel hybrid design is based on Reed's multiple branch waveguide hybrid. The primary feature of this quadrature hybrid design is the introduction of a controllable ripple in the operational band by, firstly changing the heights of the input and output branches and, secondly, by introducing three waveguide-height discontinuity sections placed symmetrically in the main waveguide. This layout allows ultra-low amplitude imbalance over a wide operational band. At the same time, it permits a greater input/output branch height as compared to the Reed's 5-branch waveguide hybrid, which should ease fabrication for short-mm and sub-mm wavelengths. This design concept is demonstrated through a 90 ° waveguide hybrid for the 159-216 GHz band (30% fractional bandwidth). Our simulations indicate that the amplitude imbalance of the hybrid is better than 0.2 dB over the most of the 159-216 GHz band with a phase imbalance better than ±4 ° . 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This novel hybrid design is based on Reed's multiple branch waveguide hybrid. The primary feature of this quadrature hybrid design is the introduction of a controllable ripple in the operational band by, firstly changing the heights of the input and output branches and, secondly, by introducing three waveguide-height discontinuity sections placed symmetrically in the main waveguide. This layout allows ultra-low amplitude imbalance over a wide operational band. At the same time, it permits a greater input/output branch height as compared to the Reed's 5-branch waveguide hybrid, which should ease fabrication for short-mm and sub-mm wavelengths. This design concept is demonstrated through a 90 ° waveguide hybrid for the 159-216 GHz band (30% fractional bandwidth). Our simulations indicate that the amplitude imbalance of the hybrid is better than 0.2 dB over the most of the 159-216 GHz band with a phase imbalance better than ±4 ° . Experimental verification of the hybrid shows excellent agreement with the simulations.</description><subject>Amplitudes</subject><subject>Couplers</subject><subject>Directional coupler</subject><subject>directional couplers</subject><subject>Discontinuity</subject><subject>Geometry</subject><subject>hybrids</subject><subject>Layout</subject><subject>millimeter -wave devices</subject><subject>Ripples</subject><subject>Simulation</subject><subject>submillimeter-wave devices</subject><subject>Substrates</subject><subject>THz components</subject><subject>Ultrawideband</subject><subject>Waveguide discontinuities</subject><subject>Waveguide hybirds</subject><subject>waveguide hybrids</subject><subject>Waveguides</subject><subject>Wavelengths</subject><subject>Wideband</subject><subject>wideband waveguide hybirds</subject><issn>2156-342X</issn><issn>2156-3446</issn><issn>2156-3446</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><sourceid>D8T</sourceid><recordid>eNpdkU9rGzEQxZfSQEOaD1B6Weill3U1-rs-hrSpA4Ye4pDSixhJs7HCrteVdhPy7Svj4EPnohnp9x4aXlV9ArYAYMtvm83qz4IzUAuuGGeGvavOOSjdCCn1-1PPf3-oLnN-YqWUFq2R59XNd8rxcVePXf0QAznchfoBn-lxLlO9enUplos4bev7fkrYrMeX-mrY93Gay_vt4LDHnaeP1VmHfabLt_Oiur_5sbleNetfP2-vr9aNl1JNDTpEaIHAMK2FW3atVoFa58HoQBSEl6TQIw-ecRU4886YjkBw1ilAEBfV3dE3v9B-dnaf4oDp1Y4YbaJMmPzW-i32A6VsM1kuteGtCbYDDFYq3tolBbIuBFYcRdDAi-vXo-s-jX9nypMdYvbUl9VonLOFlisFRoEs6Jf_0KdxTruysy3AkgnN5YGCI-XTmHOi7vRRYPYQmT1EZg-R2bfIiubzUROJ6MQboZQEEP8AAuiRNg</recordid><startdate>201601</startdate><enddate>201601</enddate><creator>Rashid, Hawal</creator><creator>Desmaris, Vincent</creator><creator>Belitsky, Victor</creator><creator>Ruf, Marcel</creator><creator>Bednorz, Thilo</creator><creator>Henkel, Andreas</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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This novel hybrid design is based on Reed's multiple branch waveguide hybrid. The primary feature of this quadrature hybrid design is the introduction of a controllable ripple in the operational band by, firstly changing the heights of the input and output branches and, secondly, by introducing three waveguide-height discontinuity sections placed symmetrically in the main waveguide. This layout allows ultra-low amplitude imbalance over a wide operational band. At the same time, it permits a greater input/output branch height as compared to the Reed's 5-branch waveguide hybrid, which should ease fabrication for short-mm and sub-mm wavelengths. This design concept is demonstrated through a 90 ° waveguide hybrid for the 159-216 GHz band (30% fractional bandwidth). Our simulations indicate that the amplitude imbalance of the hybrid is better than 0.2 dB over the most of the 159-216 GHz band with a phase imbalance better than ±4 ° . 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| subjects | Amplitudes Couplers Directional coupler directional couplers Discontinuity Geometry hybrids Layout millimeter -wave devices Ripples Simulation submillimeter-wave devices Substrates THz components Ultrawideband Waveguide discontinuities Waveguide hybirds waveguide hybrids Waveguides Wavelengths Wideband wideband waveguide hybirds |
| title | Design of Wideband Waveguide Hybrid With Ultra-Low Amplitude Imbalance |
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