@article {20_EDU_PABLO_ARRAY_GUIA_CUADRADA,
	title = {Dual Circularly Polarized Array Antenna based on Corporate Feeding Network in Square Waveguide Technology},
	journal = {IEEE Transactions on Antennas and Propagation},
	year = {2020},
	pages = {1-1},
	keywords = {Antenna arrays, omnidirectional antennas, Slot antennas},
	issn = {1558-2221},
	doi = {10.1109/TAP.2020.3019355},
	author = {E Garcia-Marin and J L Masa-Campos and P Sanchez-Olivares and J A Ruiz-Cruz}
}
@article {20_ANTENA_ARRAY_DUAL_SLOT_BOMBARDERO_KUMAR,
	title = {Dual-linearly polarized travelling-wave array antenna based on triple plus slots fed by square waveguide},
	journal = {AEU - International Journal of Electronics and Communications},
	volume = {119},
	year = {2020},
	pages = {153176},
	abstract = {A dual-linearly polarized travelling-wave array antenna design at Ku-band composed by a novel single element named as triple plus slot is presented. It is formed by a plus slot with an additional pair of short auxiliary slots. The generation of the dual polarization is based on the two degenerated modes TE10 and TE01 supported by a square waveguide following a series feeding topology. Following the operation principle of the conventional plus slot, the transversal slot is only excited by the TE10 mode to generate vertical polarization while the longitudinal slot is only excited by the TE01 mode to generate horizontal polarization. The auxiliary slots provide new degrees of freedom to the antenna design process that allow to accomplish some strict requirements and overcome some design issues. Thus, the proposed triple plus slot has been experimentally validated in a dual-linearly polarized travelling-wave array configuration. The antenna has been fabricated and measured, providing some features such as high efficiency (>80\%), high gain (>13~dB) with a 1~dB-gain bandwidth higher than 10\%, grating lobe mitigation, high isolation between orthogonal polarizations (>25~dB) as well as a fractional impedance bandwidth (S11~<~-14~dB) higher than 11.7\% (from 16 to 18~GHz).},
	keywords = {Antenna arrays, Dual-polarized antennas, Slot antennas},
	issn = {1434-8411},
	doi = {https://doi.org/10.1016/j.aeue.2020.153176},
	url = {http://www.sciencedirect.com/science/article/pii/S1434841119332042},
	author = {P Sanchez-Olivares and J L Masa-Campos and E Garcia-Marin and D Barrio-Tejedor and P Kumar}
}
@article {20_TAP_PABLO_ESCALONA_SLOT_CONFORMAL_CIRCULAR_WAVEGUIDE,
	title = {High-Gain Conical-Beam Traveling-Wave Array Antenna Based on a Slotted Circular Waveguide at $Ku$ -Band},
	journal = {IEEE Transactions on Antennas and Propagation},
	volume = {68},
	number = {8},
	year = {2020},
	month = {Aug},
	pages = {6435-6440},
	abstract = {A high-gain conical-beam traveling-wave array antenna based on a slotted circular waveguide is designed at the higher part of Ku-band. A single radiating element is formed by a ring of eight equally spaced slots fed by a circular waveguide. The excitation of the nonfundamental TM01 mode provides a uniform feeding distribution to each slot, generating an omnidirectional radiation performance. Thus, an array antenna formed by 48 rings of slots is proposed following the design rules of traveling-wave arrays. Every ring is properly designed to achieve a uniform power distribution and consequently maximum directivity for the array antenna performance. The distance between elements is also adjusted to obtain the better input matching response and mitigate the grating lobe appearance, generating a high-gain conical-beam radiation performance suitable for satellite and fifth-generation communications. The proposed antenna design has been manufactured in plastic material by using a 3-D printing process and plated by a spray metallization process. A -10 dB impedance bandwidth higher than 23\%, high-gain values around 13.5 dB, or total efficiency higher than 98\% has been achieved for the whole frequency band.},
	keywords = {Antenna arrays, antenna radiation patterns, circular waveguides, Couplings, Dipole antennas, omnidirectional antennas, Slot antennas},
	issn = {1558-2221},
	doi = {10.1109/TAP.2020.2970031},
	author = {P Sanchez-Olivares and J L Masa-Campos and E Garcia-Marin and D Escalona-Moreno}
}
@conference {19_EUCAP_PABLO_ANTENA_BOMBARDERO,
	title = {Dual Polarized Travelling-Wave Array Antenna Formed by Printed Cross Slots},
	booktitle = {2019 13th European Conference on Antennas and Propagation (EuCAP)},
	year = {2019},
	month = {March},
	pages = {1-5},
	keywords = {Antenna arrays, Antenna measurements, Arrayed waveguide gratings, Couplings, dual linear polarization, dual polarization, dual polarized array antenna, dual polarized travelling-wave array antenna, electromagnetic wave polarisation, linear antenna arrays, linear orthogonal polarizations, longitudinal slots, microstrip antenna arrays, mutual coupling effects, printed cross slots, rectangular waveguides, slot antenna arrays, Slot antennas, square waveguide feeding, transversal slots},
	issn = {null},
	url = {https://ieeexplore.ieee.org/document/8740194},
	author = {P Sanchez-Olivares and J L Masa-Campos and P Kumar and E Garcia-Marin}
}
@article {18_TAP_PABLO-SANCHEZ_WG-SLOT-ARRAY-TUNING-SCREWS,
	title = {Mechanical Technique to Customize a Waveguide-Slot Radiating Performance},
	journal = {IEEE Transactions on Antennas and Propagation},
	volume = {66},
	year = {2018},
	pages = {426-431},
	abstract = {A mechanical technique to tune the radiating performance of a waveguide-fed slot is presented. Three metallic tuning screws are introduced through the bottom wall of the feeding waveguide. The field radiated by the slot is mechanically controlled with the insertion length of the tuning screws and a good input matching response is also maintained. One of the tuning screws modifies the slot coupling parameter as well as the phase of the transmitted signal, while the other pair of screws compensates the impedance mismatch introduced by the first one. A five-element traveling-wave (TW) linear array antenna has been designed and manufactured as a proof of concept to validate the performance of the tuning screws. Several improvements such as a main beam steering range of 17{\textdegree}, an enhancement of the antenna efficiency, the mitigation of the undesirable grating lobe appearance typical of TW air-waveguide-fed arrays, as well as the compensation of the mutual coupling effects or manufacturing tolerance errors could be experimentally achieved by using the proposed mechanism based on tuning screws.},
	keywords = {linear arrays, Slot antennas, waveguide arrays},
	issn = {0018-926X},
	doi = {10.1109/TAP.2017.2772078},
	url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=8103014},
	author = {P Sanchez-Olivares and J L Masa-Campos and J Hernandez-Ortega}
}
@article {17_TAP_PABLO-SANCHEZ_RECONF_RADIALWG_ARRAY,
	title = {Mechanically Reconfigurable Conformal Array Antenna Fed by Radial Waveguide Divider With Tuning Screws},
	journal = {IEEE Transactions on Antennas and Propagation},
	volume = {65},
	year = {2017},
	pages = {4886-4890},
	abstract = {A conformal array antenna with a reconfigurable radiation pattern in the azimuth plane at Ku band is presented. An eight-faced prism has been set as 3-D antenna structure. The radiating element consists of a rectangular waveguide ended on a slotted cavity. A radial waveguide network (RWGN) fed by a symmetrically placed coaxial probe has been implemented to equally feed each radiating element obtaining an omnidirectional behavior in the azimuth plane. The insertion of several metallic tuning screws (TSs) provides a reconfiguration mechanism of the electric field distribution in the RWGN and modifies the conformal array antenna amplitude feeding. Eight different configurations generating directional radiation patterns can be tuned by means of the insertion of certain TSs. In addition, the symmetrical positioning of them allows performing a main beam scanning every 45{\textdegree} in the azimuth plane. Several prototypes have been manufactured and measured to experimentally validate the antenna performance. A total of 65 different radiation patterns have been experimentally obtained using the proposed TSs, which provides a simple, low-loss, and low-cost reconfigurability mechanism to the presented conformal array antenna.},
	keywords = {Conformal antenna, Slot antennas, waveguide arrays},
	issn = {0018-926X},
	doi = {10.1109/TAP.2017.2723918},
	url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=7970137\&isnumber=8024125},
	author = {P Sanchez-Olivares and J L Masa-Campos}
}
@conference {17_EUCAP_PABLOSANCHEZ_SingleSlot_TuningScrews_eucap,
	title = {Mechanically reconfigurable waveguide-slot single element using tuning screws},
	booktitle = {Antennas and Propagation (EUCAP), 2017 11th European Conference on},
	year = {2017},
	month = {March},
	pages = {1962-1966},
	abstract = {A mechanically reconfigurable waveguide-slot single radiating element is presented. The tuning mechanism consists on three metallic screws introduced through the bottom wall of the feeding waveguide. The insertion length of the tuning screws and the distance to the slot are used to control the radiated signal as well as to maintain a good input matching response. Several prototypes with different slot lengths have been manufactured to experimentally validate the reconfigurable performance. The proposed triple tuning screw waveguide-slot radiator provides a low cost and simple mechanism to conform a reconfigurable array antenna.},
	keywords = {reconfigurable antenna, Slot antennas, waveguide antennas.},
	doi = {10.23919/EuCAP.2017.7928264},
	url = {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=\&arnumber=7928264},
	author = {P Sanchez-Olivares and J L Masa-Campos and J Hernandez-Ortega}
}
@conference {12_EUCAP_SANCHEZ-OLIVARES_16siw,
	title = {Slot radiator with tuning vias for circularly polarized SIW linear array},
	booktitle = {Antennas and Propagation (EUCAP), 2012 6th European Conference on},
	year = {2012},
	month = {March},
	pages = {3716-3720},
	abstract = {A 16-element circularly polarized (CP) Substrate Integrated Waveguide (SIW) linear array antenna with -26 dB Taylor distribution and 2\% residue power at 17 GHz is designed. The single element consists of four crossed inclined radiating slots. In this configuration, reflection goals on the linear array are not fully achieved. For this reason a tuning element is included on some of the individual radiating elements, which consists of a pair of metallic vias that greatly enhances the reflection of longest slots. Therefore, the antenna reflection is also improved. A global antenna prototype is manufacture to check the new slot element performance in an array configuration. The specified operation band is 16.3 to 17.7 GHz.},
	keywords = {16-element circularly-polarized SIW linear array antenna, antenna radiation patterns, antenna reflection, Arrays, circular polarization (CP), electromagnetic wave polarisation, frequency 16.3 GHz to 17.7 GHz, linear antenna arrays, metallic vias, prototypes, radiating elements, Reflection, slot antenna arrays, Slot antennas, Slot array antenna, slot radiator, slot reflection, substrate integrated waveguide, substrate integrated waveguide (SIW), substrate integrated waveguides, Substrates, Taylor distribution, Tuning, tuning element, tuning via, tuning vias},
	doi = {10.1109/EuCAP.2012.6205816},
	author = {P Sanchez-Olivares and J L Masa-Campos}
}
