A High Directivity Microstrip Coupler Based on Reflective Resistors
In this paper, a novel high-directivity microstrip coupler based on reflective resistors is presented. The proposed coupler consists of three pairs of coupled-line sections and one pair of resistors. Generally, the coupling degree can be controlled by the coupled-lines, while the resistors are emplo...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Spolecnost pro radioelektronicke inzenyrstvi
2024-04-01
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| Series: | Radioengineering |
| Subjects: | |
| Online Access: | https://www.radioeng.cz/fulltexts/2024/24_01_0121_0126.pdf |
| _version_ | 1797197338986414080 |
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| author | L. Guo Y. J. Wei Y. P. Shi X. J. Zou G. M. Wang |
| author_facet | L. Guo Y. J. Wei Y. P. Shi X. J. Zou G. M. Wang |
| author_sort | L. Guo |
| collection | DOAJ |
| description | In this paper, a novel high-directivity microstrip coupler based on reflective resistors is presented. The proposed coupler consists of three pairs of coupled-line sections and one pair of resistors. Generally, the coupling degree can be controlled by the coupled-lines, while the resistors are employed to adjust the amplitude of the reflected signal to cancel out the leakage signal. The mechanism of high directivity is derived and the S-parameters are presented. To verify the design concept, a 20 dB microstrip coupler operating at 2 GHz is processed and measured. The measured results indicate that the return loss of input and output ports is more than 28.5 dB with a typical insert loss of 0.3 dB, while that of coupled and isolated ports is more than 15 dB. And the directivity is more than 20 dB with a maximum 53.1 dB at 2.01 GHz in a fractional bandwidth of 22.5%. |
| first_indexed | 2024-04-24T06:42:23Z |
| format | Article |
| id | doaj.art-91b7d953695a400fa7961bc4ed34519c |
| institution | Directory Open Access Journal |
| issn | 1210-2512 |
| language | English |
| last_indexed | 2024-04-24T06:42:23Z |
| publishDate | 2024-04-01 |
| publisher | Spolecnost pro radioelektronicke inzenyrstvi |
| record_format | Article |
| series | Radioengineering |
| spelling | doaj.art-91b7d953695a400fa7961bc4ed34519c2024-04-22T22:12:15ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122024-04-01331121126A High Directivity Microstrip Coupler Based on Reflective ResistorsL. GuoY. J. WeiY. P. ShiX. J. ZouG. M. WangIn this paper, a novel high-directivity microstrip coupler based on reflective resistors is presented. The proposed coupler consists of three pairs of coupled-line sections and one pair of resistors. Generally, the coupling degree can be controlled by the coupled-lines, while the resistors are employed to adjust the amplitude of the reflected signal to cancel out the leakage signal. The mechanism of high directivity is derived and the S-parameters are presented. To verify the design concept, a 20 dB microstrip coupler operating at 2 GHz is processed and measured. The measured results indicate that the return loss of input and output ports is more than 28.5 dB with a typical insert loss of 0.3 dB, while that of coupled and isolated ports is more than 15 dB. And the directivity is more than 20 dB with a maximum 53.1 dB at 2.01 GHz in a fractional bandwidth of 22.5%.https://www.radioeng.cz/fulltexts/2024/24_01_0121_0126.pdfhigh directivitymicrostrip couplers-parameters |
| spellingShingle | L. Guo Y. J. Wei Y. P. Shi X. J. Zou G. M. Wang A High Directivity Microstrip Coupler Based on Reflective Resistors Radioengineering high directivity microstrip coupler s-parameters |
| title | A High Directivity Microstrip Coupler Based on Reflective Resistors |
| title_full | A High Directivity Microstrip Coupler Based on Reflective Resistors |
| title_fullStr | A High Directivity Microstrip Coupler Based on Reflective Resistors |
| title_full_unstemmed | A High Directivity Microstrip Coupler Based on Reflective Resistors |
| title_short | A High Directivity Microstrip Coupler Based on Reflective Resistors |
| title_sort | high directivity microstrip coupler based on reflective resistors |
| topic | high directivity microstrip coupler s-parameters |
| url | https://www.radioeng.cz/fulltexts/2024/24_01_0121_0126.pdf |
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