## 5 Conclusions
In Proceedings of the 2007 International Conference on Microwave and Millimeter Wave Technology, Guilin, China, 18-21 April 2007. * [PERSON] (2019) [PERSON] Multimode horn for a monopulse subsystem. In Proceedings of the 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, GA, USA, 7-12 July 2019. * [PERSON] et al. (2021) [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON] Triple-Radiation Pattern Monopulse Horn Feed with Compact Single-Layer Comparator Network. _IEEE Trans. Antennas Propag._**2021**, _69_, 2546-2559. [CrossRef]
* [PERSON] et al. (2009) [PERSON]; [PERSON]; [PERSON] Multimode antenna feed system for an X-band monopulse radar. In Proceedings of the 2009 IEEE Radar Conference, Pasadena, CA, USA, 4-8 May 2009. * [PERSON] et al. (2022) [PERSON]; [PERSON]; [PERSON] [PERSON] A 94 GHz Monopulse Duplexing Horn Antenna for a 3-D Tracking Radar. _IEEE Trans. Antennas Propag._**2022**, _70_, 8973-8982. [CrossRef]
* [PERSON] (2016) [PERSON] Design of multimode tracking system for Earth station antenna. In Proceedings of the 2016 Asia-Pacific Microwave Conference (APMC), New Delhi, India, 5-9 December 2016. * [PERSON] et al. (2018) [PERSON]; [PERSON]; [PERSON] Canceling the Cross-Polarization of the Difference Modes in a Circular Aperture Multimode Monopulse Feed, _IEEE Trans. Antennas Propag._**2018**, _66_, 6734-6741. [CrossRef]
* [PERSON] et al. (2021) [PERSON]; [PERSON]; [PERSON]; [PERSON] Miniaturized Conical Waveguide Filtenna for 5G Millimeter Wave Base Stations. In Proceedings of the 15 th European Conference on Antennas and Propagation (EuCAP), Dusseldorf, Germany, 22-26 March 2021. * [PERSON] et al. (2022) [PERSON]; [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON]; [PERSON] Novel coaxial transition for shaped coaxial horn antennas operating at millimeter wave frequencies. In Proceedings of the IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), Denver, CO, USA, 10-15 July 2022. * [PERSON] and [PERSON] (2017) [PERSON]; [PERSON]; [PERSON] [PERSON] Efficient design of axially corrugated coaxial-type multi-band horns for reflector antennas. _Int. J. Microw. Wirel. Technol._**2017**, \(9\), 1975-1981. [CrossRef]
* [PERSON] et al. (2019) [PERSON]; [PERSON]; [PERSON] Antenna Concepts and Technologies for Future 5G Satellites. In Proceedings of the 2019 IEEE 2 nd 5G World Forum (5 GWF), Dresden, Germany, 30 September-2 October 2019. * [PERSON] (1986) [PERSON] A 19-way isolated power divider via the TE 01 circular waveguide mode transition. In Proceedings of the 1986 IEEE MTT-S International Microwave Symposium Digest, Baltimore, MD, USA, 2-4 June 1986. * [PERSON] and [PERSON] (2015) [PERSON]; [PERSON]; [PERSON] An isolated radial power divider via circular waveguide TE 01 -mode transducer. _IEEE Trans. Microw. Theory Technol._**2015**, _63_, 3988-3996. [CrossRef]* (46) [PERSON] [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON] 5-Way Radial Power Combiner at W-band by Stacked Waveguide Micromachining. _Nucl. Instrum. Methods Phys. Res. Sect. A Accel. Spectrometers Detect. Assoc. Equip._**2018**, _905_, 91-95. [CrossRef]
* (47) [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] High-performance 16-way Ku-band radial power combiner based on the TE1- circular waveguide mode. _Rev. Sci. Instrum._**2018**, _89_, 034703. [CrossRef] [PubMed]
* (48) [PERSON]; [PERSON] Compact quasi-periodic and aperiodic TE/sub 0n/mode converters in over model circular waveguides for use with gyrotronts. _IEEE Trans. Microw. Theory Tech._**1990**, _38_, 712-721. [CrossRef]
* (49) [PERSON]. Mode Transforming Wave Guide Transition. U.S. Patent No. 2,859,412, 4 November 1958. * (50) [PERSON]; [PERSON]; [PERSON] [PERSON]; [PERSON] [PERSON] Additive Manufacturing of a High-Performance Q-Band Circular TE01 Mode Flared-Type Transducer. _IEEE Microw. Wirel. Compon. Lett._**2019**, _29_, 577-579. [CrossRef]
* (51) [PERSON]; [PERSON] High Performance Circular TE01, Mode Converter.