Waveguide-based Monopulse Wideband Travelling-Wave Array

DOGAN, Doganay
Aydın Çivi, Hatice Özlem
A novel, travelling-wave, waveguide antenna structure with monopulse capability in the two principal planes is proposed with increased frequency bandwidth. The array consists of two interleaved waveguide arrays which provide appropriate excitations to the antenna elements above the waveguide to generate proper sum and difference patterns. With the use of printed antennas and the elimination of the narrow frequency characteristics of the slots on the waveguides, the bandwidth of the array is greatly improved.


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True time delay networks are one of the most critical structures of wideband phased-array antenna systems which are frequently used in self-protection and electronic warfare applications. In order to direct the main beam of a wideband phased-array antenna to the desired direction; phase values, which are linearly dependent to frequency, are essential. Due to the phase characteristics of the true-time delay networks, beam squint problems for broadband phased array systems are minimized. In this thesis, diffe...
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An Interleaved LTSA Array on a Waveguide Beamformer with Dual-Plane Monopulse
Gultepe, Gokhan; Dogan, Doganay; Aydın Çivi, Hatice Özlem (2019-01-01)
A monopulse antenna array is designed by using a novel element combining wideband linearly tapered slot antennas (LTSA) with an interleaved, closely-spaced, travelling wave slotted waveguide array (TWSWA) similar to [1-3]. To decrease the deteriorating coupling between sum and difference rows in previous studies for monopulse operation, adjacent rows of interleaved arrays are designed to have the same amplitude distribution but different propagation constants. So, interleaved arrays generate two simultaneou...
Citation Formats
G. GULTEPE, D. DOGAN, and H. Ö. Aydın Çivi, “Waveguide-based Monopulse Wideband Travelling-Wave Array,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43871.