An Output Coupler for a W-Band High Power Wideband Gyroamplifier
| Autor: | Lei Zhang, Graham Smith, Wenlong He, Paul McElhinney, Robert I. Hunter, Adrian W. Cross, Duncan A. Robertson, Craig R. Donaldson, Johannes McKay |
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| Přispěvatelé: | Science & Technology Facilities Council, University of St Andrews. School of Physics and Astronomy |
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Frequency band TK NDAS 02 engineering and technology Output coupler 01 natural sciences TK Electrical engineering. Electronics Nuclear engineering Optics W band 0103 physical sciences Broadband 0202 electrical engineering electronic engineering information engineering Gaussian coupling Hybrid coupler Electrical and Electronic Engineering Wideband QC 010302 applied physics business.industry Bandwidth (signal processing) 020206 networking & telecommunications Microwave window Electronic Optical and Magnetic Materials QC Physics Return loss Corrugated horn business |
| Zdroj: | IEEE Transactions on Electron Devices. 64:1763-1766 |
| ISSN: | 1557-9646 0018-9383 |
| Popis: | This work was supported by the Engineering and Physical Sciences Research Council (EPSRC) U.K. under Research Grant EP/K029746/1, and Science and Technology Facilities Council (STFC) U.K. under Research Grants ST/K006673/1 & ST/K006703/1, ST/N002326/1 & ST/N002318/1. An output coupler for a W-band high power wideband gyro-amplifier has been designed, manufactured and experimentally measured. It consists of a high performance sin2-parallel corrugated horn integrated with a broadband multi-layer window. The major design requirements are that the horn/window combination must have an input return loss lower than -30 dB over a 10 GHz bandwidth, provide a high quality output beam pattern, and operate under ultra-high vacuum conditions. The coupler converts a circular wave guide TE11 mode into the free space Laguerre Gaussian LG00 mode over the frequency band of 90–100 GHz with a measured return loss of between -30 and -40 dB and a simulated Gaussian coupling efficiency of over 99% at 94 GHz. Postprint |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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