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| Content Provider | IET Digital Library |
|---|---|
| Author | Narke, S. Ananthakrishnan, S. Bhattacharya, C. |
| Abstract | A single-feed circularly polarised (CP) composite microstrip patch antenna (MPA) with a 3D conical ground plane at X-band is presented here to meet the requirements of wide beamwidth for on-board antenna structures of highly rotating bodies in projectile motion. The results of the measurement for fabricated antenna in the anechoic chamber show that a half power beamwidth > 120 ° and axial ratio (AR) beamwidth > 100 ° are achieved for right-hand CP radiation pattern in both the xoz and yoz planes with a gain of ∼ 2 dBi . The AR at the resonating frequency of 10.28 GHz has a low figure of 0.46 dB producing nearly smooth CP foot print with a wide AR beamwidth. The measured reflection coefficient ( S 11 ) of CP–MPA is < − 15 dB at 10.28 GHz with an impedance bandwidth that is 8.75% of the resonant frequency. The figure of merit for cross-polarisation in the fabrication is ∼ 18 dB , i.e. achieved at the zenith of co-polarisation. |
| Starting Page | 419 |
| Ending Page | 421 |
| Page Count | 3 |
| ISSN | 00135194 |
| Volume Number | 56 |
| e-ISSN | 1350911X |
| Issue Number | Issue 9, Apr (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/el/56/9 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/el.2019.3729 |
| Journal | Electronics Letters |
| Publisher Date | 2020-02-20 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Anechoic Chambers (electromagnetic) Antenna Accessory Antenna Feeds Antenna Radiation Pattern Axial Ratio-beamwidth Conical Ground Plane CP–MPA Electromagnetic Wave Polarisation Frequency 10.28 GHz Highly Rotating Bodies Measured Reflection Coefficient Microstrip Antenna Noise Figure 0.46 DB On-board Antenna Structure Resonant Frequency Resonating Frequency Right-hand CP Radiation Pattern Single Antenna Single-feed Circularly Polarised Composite Microstrip Patch Antenna Smooth CP Foot Print Wide AR Beamwidth Wide Beamwidth X-band Composite Microstrip Patch Antenna Xoz Plane Yoz Plane |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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