Multiport Power Combining Patch Antenna With Stable Reflection Coefficient and Radiation Pattern in Six Polarization States

Duan, Wen; Zhang, Xiu Yin; Liao, Shaowei; Wang, Kai Xu; Xue, Quan

doi:10.1109/tap.2018.2882628

Cited by 18 publications

(11 citation statements)

References 21 publications

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“…Those two conditions make commercial phase shifters less desirable in this particular case due to RMS errors for both amplitude and phase. In addition, the large footprints of commercial parts add to the complexity of miniaturization in both the height and area to form a phased array with both polarization diversity and radiation pattern diversity [16]. It is easier to achieve the 180 • of the differential pair shown in Fig.…”

Section: Proposed Antenna Design and Measurementmentioning

confidence: 99%

“…The differential fed technique was used together with conventional single port fed to achieve dual polarizations with high isolation and low cross-polarization [15]. A multiport power combining patch antenna was demonstrated with six polarization states via a four-port system by externally employing four phase shifters and four power amplifiers [16]. Previously, we re-oriented and simplified the four-port square patch antenna system as dual differential fed pairs orthogonal to each other.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation

Zhou

Abdullah

Labossiere

et al. 2022

IEEE Open J. Antennas Propag.

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In this paper, the impact of amplitude and phase imbalance on a proposed dual differential fed patch antenna is analyzed in the context of system effective reflection coefficient and axial ratio (AR). A single square patch with four ports is used as a solo radiating element and provides absolute symmetry at radiating. An in-depth analysis will be presented to understand the impact of external RF chain components on the performance of the proposed antenna. When fully differential excitations and perfect symmetry can be achieved, all six polarization states exhibit identical system effective reflection coefficients with close to ideal AR for CP. When phase imbalance and amplitude imbalance only exist in between the two differential pairs, the antenna system matching performance is found to be unchanged. In the presence of the feed network, circular polarization (CP) achieves a measured maximum AR of 0.49dB along the antenna pointing angle, while linear polarization (LP) has a measured maximum cross polarization of −30dB. This work monitors the beamwidth over which the AR can be kept below 1dB (BW-AR −1dB ). Based on the optimization of phase imbalance, a novel BW-AR −1dB enhancement technique is introduced. Compared to the case with better AR at the main beam location, an improvement of 14 • beamwidth is measured without significant degradation of AR. Isolation better than 40dB across an operating frequency of 9.27 − 9.4 GHz has been experimentally demonstrated for the proposed dual differential fed technique. The resulting antenna is compact and low profile which is an appealing candidate for phased array applications.INDEX TERMS Dual differential fed, 1dB AR beamwidth, patch antenna, polarization diversity, system effective reflection coefficient, high isolation.

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Section: Proposed Antenna Design and Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation

Zhou

Abdullah

Labossiere

et al. 2022

IEEE Open J. Antennas Propag.

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show abstract

“…Besides, in [15]- [17], a patch antenna is fed by two double-fed slots resulting in a four-port antenna. In [18], a four-port probe-fed patch antenna, with polarization diversity, is presented. In [19], an eight-port configuration was proposed for the first time on printed circuit board (PCB) using stripline driven slots.…”

Section: Introductionmentioning

confidence: 99%

Quadruple-Differentially-Driven Offset-Probe- Fed Patch Antenna for On-Antenna Power Combining

Gall,

Ghiotto,

Varault

et al. 2024

IEEE Access

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In this paper, a novel quadruple differentially driven offset probe fed patch antenna is introduced to extend the on-antenna power combining (OAPC) capabilities. This original design is based on the feeding of the two fundamental resonating modes of a square patch using offset differential probe pairs. Polarization diversity is obtained changing the relative phase difference between the differential driving signals. Using two orthogonally arranged offset differential pairs (each driving one of the two resonating modes), a four-port driven patch antenna (4DPA) is achieved. Then, mirror-duplicating the 4DPA feeding differential pairs (i.e., each resonating mode being then driven by two offset differential pairs), an eight-port driven patch antenna (8DPA) is obtained. For those structures, the offset probe pair common mode (CM) parasitic effect is studied. Then, mitigating technics based on the CM impedance control are introduced. One of them is implemented in 4DPA and 8DPA demonstrators using unbalanced commercial power amplifiers. Combining power directly into the antenna with up to eight ports in this work, improved efficiency, higher transmitted power, smaller associated monolithic microwave integrated circuits (MMIC) and enhanced heat dissipation are achieved compared to the alternative on-circuit power combining technics. As a proof of concept and to compare performance, passive and active demonstrators of reference one-port driven patch antennas (1DPA), 4DPAs and 8DPAs operating at 2.45 GHz are designed, fabricated and measured. The simulation and experimental results validate the proposed on-antenna combining technic, which is believed by the authors to be of particular interest to enhance performance of radar and communication silicon-based active antenna arrays.INDEX TERMS Differentially-driven antennas, multi-port antennas, on-antenna power combining, patch antennas.

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“…Even multiple different polarizations can be achieved when the antenna is fed with multiple ports. In [21], the proposed patch antenna achieves six different polarizations by changing the excitation coefficients of the ports, and in [22], the antenna is frequency reconfigurable besides having polarization diversity.…”

Section: Introductionmentioning

confidence: 99%

A Dual-Polarized Wideband Planar Multiport Mobile Antenna

Kormilainen

Luomaniemi

Lehtovuori

et al. 2022

2022 16th European Conference on Antennas and Propagation (EuCAP)

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Additional antennas are needed in smart phones to support 5G bands. The metal rim, which is the most attractive position for antennas, is already fully occupied by antennas supporting legacy bands. Therefore, there is a growing interest in new, more challenging antenna locations, such as the back cover of the phone. In this paper, we introduce a dual-polarized frequency reconfigurable wideband planar multiport antenna to the back cover of a mobile phone. The antenna has a height of only 0.5 mm. The simulations show that the introduced antenna achieves better than -5.8 dB efficiency from 3.3 GHz to 4.2 GHz.

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Multiport Power Combining Patch Antenna With Stable Reflection Coefficient and Radiation Pattern in Six Polarization States

Cited by 18 publications

References 21 publications

Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation

Impact of Amplitude and Phase Imbalance on Dual Differential Fed Patch Antenna With High Isolation

Quadruple-Differentially-Driven Offset-Probe- Fed Patch Antenna for On-Antenna Power Combining

A Dual-Polarized Wideband Planar Multiport Mobile Antenna

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