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Content Provider | IET Digital Library |
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Author | Han, Wangwang Yang, Feng Long, Rui Zhou, Longjian Yan, Fei |
Abstract | A novel low-profile single-feed circularly polarised (CP) microstrip antenna (MSA) loaded by a coplanar parasitic epsilon-negative (ENG) transmission line (TL)-based annular ring with enhanced bandwidth is proposed. By exciting the TM11 modes on both the driven patch and the coupled ENG TL-based annular ring, two minimum axial-ratio (AR) points are generated. It is the combination of the two minimum AR points that result in the bandwidth enhancement. An antenna prototype operating at the WLAN 5.2 GHz band is exemplified to validate the proposed concept. The measured results show that the proposed antenna with a low profile of 0.035λ 0 obtains an overlapped bandwidth (return loss <−10 dB and AR < 3 dB) of 4%, which is 2.3 times wider than the conventional CP MSA. Moreover, the proposed antenna exhibits higher gain and lower backward radiation as compared with conventional CP MSAs. |
Starting Page | 1475 |
Ending Page | 1476 |
Page Count | 2 |
ISSN | 00135194 |
Volume Number | 51 |
e-ISSN | 1350911X |
Issue Number | Issue 19, Sep (2015) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/51/19 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2015.1258 |
Journal | Electronics Letters |
Publisher Date | 2015-09-03 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Antenna Radiation Pattern Backward Radiation Bandwidth Enhancement Coplanar Parasitic ENG Transmission Line-based Annular Ring Coplanar Parasitic Epsilon-negative TL-based Annular Ring Coplanar Transmission Line Coupled ENG TL-based Annular Ring Driven Patch Frequency 5.2 GHz Low-profile Single-feed Circularly Polarised Microstrip Antenna Microstrip Antenna Microwave Antenna Minimum Axial-ratio Point MSA Polarisation Single Antenna TM11 Mode Waveguide And Microwave Transmission Line WLAN 5.2 GHz Band |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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