Compact Low-Loss Integration of High-$Q$ 3-D Filters With Highly Efficient Antennas

Yusuf, Yazid; Gong, Xun

doi:10.1109/tmtt.2010.2100407

Cited by 150 publications

(68 citation statements)

References 20 publications

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“…The comparison mainly focuses on bandwidth, antenna size, gain, number of substrates and gain at the harmonic. This comparison shows that this work exhibits a wider bandwidth than that in [9] and an improved harmonic suppression than that in [21]. These enhancements are attributed to the mixed use of different types of resonators and the out-of-phase divider.…”

Section: Resultsmentioning

confidence: 76%

“…The comparison of the gains between the two antenna arrays demonstrates that the integrated filtering antenna array has a much improved performance of frequency selectivity and harmonic suppression. Table II compares the filtering antenna in this paper with the only other reported filtering array in the literature [9] and one filtering antenna in [21]. The comparison mainly focuses on bandwidth, antenna size, gain, number of substrates and gain at the harmonic.…”

Section: Resultsmentioning

confidence: 99%

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An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Mao

Gao

Wang

et al. 2016

IEEE Trans. Microwave Theory Techn.

143

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Citation for this version held on GALA:Mao, Chun-Xu, Gao, Steven, Wang, Yi, Wang, Zhengpeng, Qin, Fan, Sanz-Izquierdo, Benito and Chu, Qing-Xin (2016) An integrated filtering antenna array with high selectivity and harmonics suppression. London: Greenwich Academic Literature Archive. Available at: http://gala.gre.ac.uk/15291/ __________________________________________________________________________________________ Contact: gala@gre.ac.uk > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < 1  Abstract-In this paper, a new design of antenna array with integrated functions of filtering, harmonics suppression and radiation is proposed. The device employs a multi-port network of coupled resonators, which is synthesized and designed as a whole to fulfill the functions of filtering, power combination/division and radiation. The 50 Ω interfaces between the cascaded filter, power divider and antenna in traditional RF front-ends are eliminated to achieve a highly integrated and compact structure. A novel resonator-based four-way out-of-phase filtering power divider is proposed and designed. It is coupled to the patch array, rendering a fourth-order filtering response. The coupling matrix of the resonator network is synthesized. The physical implementations of the resonators and their couplings are detailed. Compared to a traditional patch array, the integrated filtering array shows an improved bandwidth and frequency selectivity. In addition, the harmonic of the antenna array is suppressed due to the use of different types of resonators. To verify the concept, a 2 × 2 filtering array at S band is designed, prototyped and tested. Good agreement between simulations and measurements has been achieved, demonstrating the integrated filtering antenna array has the merits of wide bandwidth, high frequency selectivity, harmonics suppression, stable antenna gain and high polarization purity.

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Section: Resultsmentioning

confidence: 76%

Section: Resultsmentioning

confidence: 99%

An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Mao

Gao

Wang

et al. 2016

IEEE Trans. Microwave Theory Techn.

143

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“…To improve the filter performance in the microwave and millimeter-wave regimes, the power losses due to conduction and radiation must be reduced as low as possible [8][9][10][11]. The requisite weak coupling in the conventional end-coupled microstrip or CPW filters for narrower bandwidth are usually realized by keeping the resonant elements far apart, which results in the undesirable radiation effect from gap discontinuities and leads to the primary cause of losses in the millimeter-wave range [12][13][14][15]. Although the unwanted radiation can be suppressed by adopting housing, this would inevitably increase the engineering cost and deteriorate the upper stopband of a filter due to the excitation of waveguide modes [16,17].…”

Section: Introductionmentioning

confidence: 99%

Propagation and Radiation Characteristics of Multilayer Coupled-Line Bandpass Filters Using Conductor-Backed Coplanar Transmission Lines

Kuo¹,

Liou²,

Mao³

2015

PIER C

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Abstract-This paper presents the analytical design formulas for the bandpass filters which are built on the asymmetrically coupled-line conductor-backed coplanar transmission lines (CBCTLs) in multilayer configuration. The full-wave simulation is employed to characterize the far-field patterns of space-wave and surface-wave radiations as well as the frequency-dependent conductor, dielectric, and radiation losses. Good agreement among the results of full-wave simulation, transmission-line model, and measurement justifies the design procedure and validates the analytical design formulas. By properly placing the dielectric materials in multilayer configuration, a bandpass filter for minimizing the radiated power loss and improving the stopband characteristic can be achieved.

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“…Nevertheless, these antennas impedance bandwidth is narrow and low suppression in the stopband. Recently, a codesign approach has been proposed to incorporate the filter and the antenna [7]- [10]. This integration approach improves impedance bandwidth and suppression in the stopband.…”

Section: Introductionmentioning

confidence: 99%

A broadband low profile microstrip filter-antenna with an omni-directional pattern

Fan²,

Wang

et al. 2014

Proceedings of 2014 3rd Asia-Pacific Conference on Antennas and Propagation

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A broadband low profile microstrip filter-antenna with an omni-directional pattern is presented. A coupled line is used to connect a microstrip antenna and the second resonator of a filter as admittance inverter. In the design, the antenna performs as a radiator; meanwhile it is also the last resonator of the bandpass filter. Therefore, the loss is reduced between the filter and the microstrip antenna. The proposed filter-antenna can provide 15% impedance bandwidth, a low profile of 3.8mm, an omni-directional pattern and high suppression in the stopband. The proposed antenna simulated results are presented.

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Compact Low-Loss Integration of High-$Q$ 3-D Filters With Highly Efficient Antennas

Cited by 150 publications

References 20 publications

An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

An Integrated Filtering Antenna Array With High Selectivity and Harmonics Suppression

Propagation and Radiation Characteristics of Multilayer Coupled-Line Bandpass Filters Using Conductor-Backed Coplanar Transmission Lines

A broadband low profile microstrip filter-antenna with an omni-directional pattern

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