Practical design of rectangular waveguide filters with a capacitive building block providing an extra transmission zero

Soto, Pablo; Boria, Vicente E.; Carceller, Carlos; Cogollos, S.; Guglielmi, M.; Smacchia, Davide

doi:10.1109/mwsym.2015.7167019

Cited by 11 publications

(10 citation statements)

References 6 publications

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“…Two new families of low-loss high-power bandpass filters have been recently proposed, which are suitable for this particular application [19]. They are the Hybrid Folded Rectangular Waveguide (HFRW) filters [21], [22] and the Modified Hybrid Folded Rectangular Waveguide (MHFRW) filters [23].…”

Section: A Transmission Filtersmentioning

confidence: 99%

“…The HFRW configuration can implement an independently controlled TZ for each cascaded trisection [16]. On the other hand, the MHFRW can generate one TZ for each coupling window (tuned by the stub created by the resonator location), thus allowing a higher number of TZs for the same filter order [23]. An advantage of the HFRW configuration is that the TZ can be placed very close to the filter passband [22].…”

Section: A Transmission Filtersmentioning

confidence: 99%

See 1 more Smart Citation

Advanced Compact Setups for Passive Intermodulation Measurements of Satellite Hardware

Smacchia

Soto

Boria

et al. 2018

IEEE Trans. Microwave Theory Techn.

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This paper provides the guidelines for the practical development of novel advanced test beds for passive intermodulation (PIM) measurements. The proposed test beds are highperformance and flexible, allowing for the measurement of several PIM signals of different orders, with two or more input carriers. In contrast to classic test beds for satellite hardware, based on the cascaded connection of several elements, an integrated solution involving the minimum number of hardware pieces is proposed. The result is a lower number of flanged interconnections thus reducing residual PIM level and insertion losses. In addition, return loss degradation and harmful spurious generation in the interconnections are also avoided. Measurement test beds for conducted and radiated PIM, in both transmitted and reflected directions, are discussed, highlighting the benefits and drawbacks of each configuration. Design guidelines for the key components are fully discussed. Illustrative application examples are also reported. Finally, excellent experimental results obtained from low-PIM measurement setups, working from C band to Ka band, are shown, thus fully confirming the validity of the proposed configurations. Index Terms-Intermodulation distorsion, microwave filters, high-power filters, multiplexing, computer-aided engineering. I. INTRODUCTION I N the last decades, the avoidance of passive intermodulation effects (PIM) has become a top-priority issue for communication satellites systems engineers, as a consequence of the ever more demanding payload requirements [1], [2]. PIM may, in fact, become an important source of performance degradation due to increased transmitted power levels for higher capacity links, together with the need for simultaneous operation in transmission (downlink) and in reception (uplink) at different frequency bands [3], [4]. In the scenario of Manuscript

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Section: A Transmission Filtersmentioning

confidence: 99%

Section: A Transmission Filtersmentioning

confidence: 99%

Advanced Compact Setups for Passive Intermodulation Measurements of Satellite Hardware

Smacchia

Soto

Boria

et al. 2018

IEEE Trans. Microwave Theory Techn.

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“…Even though both structures exhibit very similar features and advantages, the one proposed in this paper provides high flexibility in terms of coupling structures (as described at length in this paper) or generation and control of additional TZ. For instance, the distance from the direct-coupling apertures to the shortcircuited end of each resonator can also be easily employed to realize TZs on either side of the band, as demonstrated in [14], [15]. The cross-coupled structures presented in this work can incorporate the aforementioned technique to increase the number of TZs they realize.…”

Section: Alternative Physical Implementations Of Hfrw Trisectionsmentioning

confidence: 99%

“…In order to maintain a compact structure with TE 101 cavities, the stub lengths have been set to a small value. This particular choice avoids the generation of extra TZs in the response (see [14], [15]), but allows us to focus on the effects under study on this paper. Next, we can proceed with the structure extraction.…”

Section: A Initial Designmentioning

confidence: 99%

Design of Hybrid Folded Rectangular Waveguide Filters With Transmission Zeros Below the Passband

Carceller

Soto

Boria

et al. 2016

IEEE Trans. Microwave Theory Techn.

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Abstract-The design and physical implementation of hybrid folded rectangular waveguide (HFRW) filters providing multiple transmission zeros (TZs) below the passband are considered in this paper. These structures offer great flexibility to locate the TZs in a wide frequency range. Different implementations have been considered, each one offering certain advantages in terms of ease of manufacture, number of TZs and their separation from the passband. A simple design procedure for these structures is also described. Measurements of a manufactured 5-pole filter prototype, and simulations (obtained with several available commercial software tools) for different triplet sections, fully validate the novel configurations proposed in this work.

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“…As the aperture size increases, the interaction is stronger and the shift in opposite directions is more clearly distinguished. This effect has been employed to realize all-capacitive filters with TZs that do not include cross-couplings [150,151]. However, the resulting filters become larger in the direction of propagation, thus causing resonators to operate in the TE 102 mode (or even higher orders) in order to implement the filter.…”

Section: Direct Coupling Implementationsmentioning

confidence: 99%

Full-wave characterization of bi-dimensional cavities and its application to the design of waveguide filters and multiplexers

Candau¹

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AgradecimientosA pesar de las dudas iniciales que tenía sobre cual podía ser mi aportación a un mundo tan estudiado como el de los dispositivos de microondas en guía de onda, considero que la decisión de realizar esta tesis ha sido todo un acierto. La colaboración entre la Universidad Politécnica de Valencia y la empresa de base tecnológica Aurorasat ha permitido enfrentarme a problemas de interés científico, pero que a su vez tienen aplicación práctica directa en la industria. Agradezco enormemente a Vicente Boria por haber hecho posible esta colaboración, haberme animado a embarcarme en ella y confiado en que la llevaría a cabo conéxito. Sin su liderazgo y tenacidad, esta tesis no hubiera sido posible.Durante el desarrollo de la misma he tenido la gran suerte de contar con dos valiosos mentores, como son Jordi Gil y Pablo Soto. Para mí han sido toda una referencia tanto profesional como personal. Han sabido orientarme en momentos críticos, y su implicación ha sido total desde el primer momento. Gran parte de lo que he aprendido durante todos estos años sobre electromagnetismo y diseño de componentes de microondas se lo debo a ellos. Sin duda, este trabajo no hubiera tenido la misma calidad sin sus innumerables aportaciones.Por otro lado, también quisiera reconocer la contribución de otras personas por las que tengo gran admiración. A Carlos Vicente, por plantar algunas de las semillas que han dado lugar a esta tesis, así como por las enriquecedoras discusiones que hemos tenido todo este tiempo y el apoyo que me ha brindado. También a Santiago Cogollos, que me introdujo en el mundo BI-RME y la teoría de filtros, y que siempre ha me ha prestado una valiosa ayuda cuando lo he necesitado.Por supuesto, debo agradecer a Marco Gugliemli por permitirme explorar algunas de sus innovadoras ideas sobre filtros HFRW, y a la Prof. Kawthar Zaki por acogerme en su laboratorio de la University of Maryland. Asímismo, a mis compañeros de Aurorasat y el GAM, con los que he compartido muy buenos momentos.Porúltimo, a mi familia por todo su apoyo. Su confianza en mi capacidad para llevar a cabo esta tesis ha sido de gran ayuda para seguir adelante. A mis amigos y brothers, por estar ahí siempre. Y a Ellen, por todos losánimos que me ha dado, en especial a la hora de escribir. ivCon esta tesis se cierra un capítulo de mi vida y se abre uno nuevo. Espero que, sea donde sea, sigamos colaborando durante muchos años. Carlos Carceller AbstractModern communications systems impose stringent requirements on the equipment that operates at microwave frequency, especially in the case of wireless communications. The design of passive components for these applications is contingent upon the availability of accurate electromagnetic (EM) modeling tools that can efficiently handle the complex geometry of these components. Despite the widespread use of mesh-based general-purpose computer-aided engineering (CAE) tools to perform final design verifications, their application during the optimization process is limited. Optimum designs require a large ...

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Practical design of rectangular waveguide filters with a capacitive building block providing an extra transmission zero

Cited by 11 publications

References 6 publications

Advanced Compact Setups for Passive Intermodulation Measurements of Satellite Hardware

Advanced Compact Setups for Passive Intermodulation Measurements of Satellite Hardware

Design of Hybrid Folded Rectangular Waveguide Filters With Transmission Zeros Below the Passband

Full-wave characterization of bi-dimensional cavities and its application to the design of waveguide filters and multiplexers

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