© The Institution of Engineering and Technology
A compact all-metallic cavity-cascaded antenna is presented. A two-end-shorted metallic plate is shorted and divided averagely by five identical shorting walls alternatively, forming five alternatively cascaded open cavities. By selecting proper width of the metallic plate and length of the shorting walls, all the five open cavities operate in the TM1n0 (n = 0.5) mode, generating five fringing fields with the same phase. Thus, effective radiation is achieved. The proposed antenna is operated in the 5-order mode, e.g. five standing waves are distributed along the proposed antenna. It only occupies a volume of 0.43λ 0 × 2.83λ 0 (λ 0 is the wavelength of the centre frequency). Moreover, the proposed antenna is fabricated by all metal, resulting in low cost, light weight, wide bandwidth, high gain and high efficiency. A prototype that can provide an overlapped impedance bandwidth and 3 dB gain bandwidth of 7.72% from 8.10 to 8.75 GHz and a peak gain of 13.37 dBi at 8.5 GHz is built and measured.
References
-
-
1)
-
1. Zhao, Y., Zhang, Z., Feng, Z.: ‘An electrically large metallic cavity antenna with circular polarization for satellite applications’, IEEE Antennas Wirel. Propag. Lett., 2011, 10, pp. 1461–1464 (doi: 10.1109/LAWP.2011.2178585).
-
2)
-
5. Feresidis, A., Goussetis, G., Wang, S., Vardaxoglou, J.: ‘Artificial magnetic conductor surfaces and their application to low-profile high gain planar antennas’, IEEE Trans. Antennas Propag., 2005, 53, (1), pp. 209–215 (doi: 10.1109/TAP.2004.840528).
-
3)
-
8. Chang, L., Zhang, Z., Li, Y., Feng, Z.: ‘All-metal antenna array based on microstrip line structure’, IEEE Trans. Antennas Propag., 2015, 64, (1), pp. 351–355 (doi: 10.1109/TAP.2015.2500907).
-
4)
-
6. Sun, Y., Chen, Z., Zhang, Y., Chen, H., See, T.: ‘Subwavelength substrate-integrated Fabry–Pérot cavity antennas using artificial magnetic conductor’, IEEE Trans. Antennas Propag., 2012, 60, (1), pp. 30–35 (doi: 10.1109/TAP.2011.2167902).
-
5)
-
7. Liu, Y., Hao, Y., Gong, S.: ‘Low-profile high-gain slot antenna with Fabry–Perot cavity and mushroom-like electromagnetic band gap structures’, Electron. Lett., 2015, 51, (4), pp. 305–306 (doi: 10.1049/el.2014.4190).
-
6)
-
2. Wei, K., Zhang, Z., Zhao, Y., Feng, Z.: ‘Design of a ring probe-fed metallic cavity antenna for satellite applications’, IEEE Trans. Antennas Propag., 2013, 61, (9), pp. 4836–4839 (doi: 10.1109/TAP.2013.2264453).
-
7)
-
12. Trentini, G.: ‘Partially reflecting sheet arrays’, IRE Trans. Antennas Propag., 1956, 4, (4), pp. 666–671 (doi: 10.1109/TAP.1956.1144455).
-
8)
-
4. Zhao, Y., Zhang, Z., Feng, Z.: ‘A dual-band tunable ultra-thin cavity antenna’, IEEE Antennas Wirel. Propag. Lett., 2011, 10, pp. 717–720 (doi: 10.1109/LAWP.2011.2161745).
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Compact all-metallic cavity-cascaded antenna