Active Microwave Metamaterials Incorporating Ideal Gain Devices
| Autor: | Hao Xin, Lixin Ran, Xin Lv, Li-Ming Si, Kihun Chang, Te-Chuan Chen, Tao Jiang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
active metamaterial
negative resistance device composite right/left-handed transmission line (CRLH-TL) dispersion/attenuation relation Technology Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| Zdroj: | Materials, Vol 4, Iss 1, Pp 73-83 (2010) |
| Druh dokumentu: | article |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma4010073 |
| Popis: | Incorporation of active devices/media such as transistors for microwave and gain media for optics may be very attractive for enabling desired low loss and broadband metamaterials. Such metamaterials can even have gain which may very well lead to new and exciting physical phenomena. We investigate microwave composite right/left-handed transmission lines (CRLH-TL) incorporating ideal gain devices such as constant negative resistance. With realistic lumped element values, we have shown that the negative phase constant of this kind of transmission lines is maintained (i.e., left-handedness kept) while gain can be obtained (negative attenuation constant of transmission line) simultaneously. Possible implementation and challenging issues of the proposed active CRLH-TL are also discussed. |
| Databáze: | Directory of Open Access Journals |
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