Hostname: page-component-8448b6f56d-gtxcr Total loading time: 0 Render date: 2024-04-23T09:30:07.068Z Has data issue: false hasContentIssue false
  • English
  • Français

Untilted edge slot antennas excited by T-shaped wires

Published online by Cambridge University Press:  18 October 2021

Mahdi Moradian Open the ORCID record for Mahdi Moradian [Opens in a new window]
Mahdi Moradian*
Affiliation:
Department of Electrical Engineering, Lenjan Branch, Islamic Azad University, Isfahan, Iran
*
Author for correspondence: Mahdi Moradian, E-mail: moradianpour@email.com
Get access Rights & Permissions [Opens in a new window]

Abstract

An effective method is proposed to excite the untilted edge slot antennas. In the proposed method, two T-shaped wires are placed at both sides of each untilted slot. Two legs of each T-shaped wire are connected to the waveguide walls, while the third leg is open. One of the T-shaped wires connects the upper broad wall of the waveguide to the narrow wall of the waveguide which contains the slots. Similarly, the other T-shaped wires connect the lower broad wall of the waveguide to the narrow wall of the waveguide that contains the slots. The phase reversal between the adjacent slots can be accomplished by changing the orientation of the T-shaped wires. It is shown that the arm lengths of the connected wires can be employed as a parameter to control the radiated power by the slots. Furthermore, the arm lengths of the open wires can be selected properly to control the dynamic range of the equivalent normalized susceptance associated with each untilted slot antenna. To validate the effectiveness of the proposed antennas, two linear arrays consisting of 11 slots have been designed, implemented, and tested. The simulation and the measurement results of the designed arrays show that for the proposed untilted edge slot antennas, the dynamic range of the equivalent normalized susceptance is improved significantly which leads to a straightforward design process with no requirement to resort to any time-consuming tuning process.

Keywords

Linear arraysecond-order beamsT-shaped wire excited slot antennasuntilted edge slot antennas
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 8 , October 2022 , pp. 1027 - 1038
Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Elliot, RS (2003) Antenna Theory and Design, Revised Edn. Hoboken, NJ: John Wiley & Sons.CrossRefGoogle Scholar
Hirokawa, J and Zhang, M (2014) Waveguide slot array antennas. In Chen, ZN (ed.), Handbook of Antenna Technologies. Singapore: Springer Singapore, pp. 1–21.Google Scholar
Josefsson, L and Rengarajan, SR (2018) Slotted Waveguide Array Antennas: Theory, Analysis and Design. London, UK: SciTech Publishing.Google Scholar
Lo, YT and Lee, SW (2013) Antenna Handbook: Theory, Applications, and Design. Boston, MA: Springer US.Google Scholar
Sangster, AJ (2019) Compact Slot Array Antennas for Wireless Communications. Cham, Switzerland: Springer Nature.CrossRefGoogle Scholar
Volakis, J (2007) Antenna Engineering Handbook, 4th Edn. New York: McGraw-Hill Education.Google Scholar
Prakash, V, Christopher, S and Balakrishnan, N (2000) A selective survey of the waveguide-fed slot radiators. IETE Technical Review 17, 51–59.CrossRefGoogle Scholar
Kurtz, L and Yee, J (1957) Second-order beams of two-dimensional slot arrays. IRE Transactions on Antennas and Propagation 5, 356–362.CrossRefGoogle Scholar
Wang, W, Zhong, SS, Jin, J and Liang, XL (2005) An untilted EDGE-slotted waveguide antenna array with very low cross-polarization. Microwave and Optical Technology Letters, 91–93.CrossRefGoogle Scholar
Dogan, D and Civi, ÖA (2010) A novel edge wall waveguide slot antenna. 2010 IEEE International Symposium on Phased Array Systems and Technology: IEEE, pp. 453–456.CrossRefGoogle Scholar
Moradi, M, Abiri, H and Basiri, R (2016) Accurate design of slot array with low side lobes and low cross polarization. 2016 24th Iranian Conference on Electrical Engineering (ICEE): IEEE, pp. 1746–1750.CrossRefGoogle Scholar
Wang, W, Jin, J, Lu, J-G and Zhong, S-S (2004) An untilted edge-slotted waveguide antenna array design. Proceedings ICCEA 2004 2004 3rd International Conference on Computational Electromagnetics and Its Applications, 2004: IEEE, pp. 208–211.CrossRefGoogle Scholar
Wang, W, Jin, J, Lu, J-G and Zhong, S-S (2005) Waveguide slotted antenna array with broadband, dual-polarization and low cross-polarization for X-band SAR applications. IEEE International Radar Conference, 2005: IEEE, pp. 653–656.Google Scholar
Hirokawa, J and Kildal, P-S (1997) Excitation of an untilted narrow-wall slot in a rectangular waveguide by using etched strips on a dielectric plate. IEEE Transactions on Antennas and Propagation 45, 1032–1037.CrossRefGoogle Scholar
Satyamurthy, Y and Garg, R (1993) Excitation of untilted edge slots by a suspended slotline. Electronics Letters 29, 1553–1554.CrossRefGoogle Scholar
Herruzo, JIH, Valero-Nogueira, A, Giner, SM and Jiménez, AV (2015) Untilted narrow-wall slots excited by parasitic dipoles in groove gap waveguide technology. IEEE Transactions on Antennas and Propagation 63, 4759–4765.CrossRefGoogle Scholar
Giner, SM, Valero-Nogueira, A, Herruzo, JIH and Escudero, MB (2013) Excitation of untilted narrow-wall slot in groove gap waveguide by using a parasitic dipole. 2013 7th European Conference on Antennas and Propagation (EuCAP): IEEE, pp. 3082–3085.Google Scholar
Sangster, A (1990) Non-inclined edge-slot in bifurcated rectangular waveguide. Journal of Electromagnetic Waves and Applications 4, 61–74.CrossRefGoogle Scholar
Mallahzadeh, AR and Mohammad Ali Nezhad, S (2010) Untilted slot array antenna at the narrow wall of the waveguide using double-ridge. International Journal of RF and Microwave Computer-Aided Engineering 20, 699–710.CrossRefGoogle Scholar
Moradian, M (2015) Untilted edge-slot antenna arrays fed by wiggly double-ridged waveguide. Electronics Letters 51, 1966–1967.CrossRefGoogle Scholar
Lu, J, Zhang, H, Wang, W, Liang, X, Ge, J, Jin, M and Wu, W (2018) Broadband dual-polarized waveguide slot filtenna array with low cross polarization and high efficiency. IEEE Transactions on Antennas and Propagation 67, 151–159.Google Scholar
Wang, W, Zhang, H-T, Qi, M-Q and Zhang, Z-H (2012) Ridged waveguide slot antenna array with low cross-polarization. 2012 International Conference on Microwave and Millimeter Wave Technology (ICMMT): IEEE, pp. 1–3.CrossRefGoogle Scholar
Hirokawa, J, Manholm, L and Kildal, P-S (1997) Analysis of an untilted wire-excited slot in the narrow wall of a rectangular waveguide by including the actual external structure. IEEE Transactions on Antennas and Propagation 45, 1038–1044.CrossRefGoogle Scholar
Derneryd, A and Lagerstedt, A (1995) Novel slotted waveguide antenna with polarimetric capabilities. 1995 International Geoscience and Remote Sensing Symposium, IGARSS’95 Quantitative Remote Sensing for Science and Applications: IEEE, pp. 2054–2056.CrossRefGoogle Scholar
Caer, D and Le Foll, J (1995) Waveguide with non-inclined radiating slots excited by flat metal plates. Google Patents.Google Scholar
Brady, M (1971) Single Slotted-Waveguide Linear Arrays. Advances in Microwaves. New York: Elsevier, pp. 131–173.Google Scholar
Chou, K-R, Lin, H-N, Lu, W-H, Chang, H-W and Tiong, K-K (2015) Design and operation of an edge-wall slotted waveguide array antenna with ultralow side lobes for application of off-shore radar. Journal of Marine Science and Technology 23, 620–627.Google Scholar
Chang, D, Hung, C, Lin, C, Lin, J, Ho, K and Lee, T (1993) Suppression of second order beam for traveling wave slot arrays. Proceedings of 1993 Asia Pacific Microwave Conference (APMC’93): IEEE, p. 1.Google Scholar
Bandyopadhyay, B, Banerjee, A, Chatterjee, S and Maiumder, A (2018) Dual Band Edge Wall Slotted Array Antenna with Reduced Cross Polarization at X Band. 2018 18th Mediterranean Microwave Symposium (MMS): IEEE, pp. 64–67.CrossRefGoogle Scholar
Young, JC, Kazama, Y, Hirokawa, J and Ando, M (2006) Full-wave optimization of Linear, Edge slot array with flare and choke for decreased vertical beamwidth and cross-polarization. 2006 IEEE Antennas and Propagation Society International Symposium: IEEE, pp. 2761–2764.CrossRefGoogle Scholar
Park, J-K, Na, H-G, Kim, C-H and Lee, D-K (2009) An effective method for suppressing second-order beams of 2D edge slot phased arrays. Journal of Electromagnetic Engineering and Science 9, 1–6.CrossRefGoogle Scholar
Li, T and Dou, W (2017) Design of an edge slotted waveguide antenna array based on T-shaped cross-section waveguide. International Journal of Antennas and Propagation 2017, 1–8.Google Scholar
Li, T, Meng, H and Dou, W (2014) Design and implementation of dual-frequency dual-polarization slotted waveguide antenna array for Ka-band application. IEEE Antennas and Wireless Propagation Letters 13, 1317–1320.Google Scholar