Implementation of beam-steering front-ends at 2.45 GHz using modified Wilkinson power dividers, reflexion type phase shifters and C-shape monopole antennas: First results

Albuquerque, T.C.; Silva, T.L.V.N.; Serres, Alexandre; Freire, Raimundo C. S.; Walheim, J.; Podevin, Florence; Burdin, F.; Ferrari, Philippe; Vuong, Tân-Phu

doi:10.1109/imoc.2015.7369191

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Wilkinson power dividers (WPDs) are lossy reciprocal devices with a 1 × N port configuration, characterized for having all their N + 1 ports matched (no reflections) and having N mutually isolated ports. , WPDs provide functionalities of power division/combination , as well as coherent perfect absorption (CPA). − The lossy character of WPDs plays a fundamental role on their mode of operation, since their matching and isolation properties are ultimately enabled by the dissipation of unwanted signals in resistor elements. , WPDs are widely used at RF and microwave frequencies for communication and sensing applications, being a common component of transceivers, transistors, modulators, and phased arrays. − Due to their ability to cover multiple frequency bands, they have been deployed in 5G and satellite communication infrastructures. − In addition, WPDs have been used in networks of amplifiers, , using paralleled configurations to increase their dynamical range. Recent reports also suggest that WPDs might increase the SNR of beam-forming networks …”

Section: Introductionmentioning

confidence: 99%

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Ortega‐Gomez¹,

Hernández²,

Oña³

et al. 2023

ACS Photonics

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Wilkinson power dividers (WPDs) are a popular element in RF and microwave technologies known for providing isolation capabilities. However, the benefits that WPDs could offer to integrated photonic systems are far less studied. Here, we investigate the thermal emission from and the noise performance of silicon-on-insulator (SOI) WPDs. We find that WPDs exhibit a noiseless port, with important implications for receiving systems and absorption-based quantum state transformations. At the same time, the thermal signals exiting noisy ports exhibit nontrivial correlations, opening the possibility for noise cancellation. We analyze passive and active networks containing WPDs showing how such nontrivial correlations can prevent the amplification of the thermal noise introduced by WPDs while benefiting from their isolation capabilities. Using this insight, we propose a modified ring-resonator amplifier that improves by N times the SNR in comparison with conventional traveling wave and ring-resonator amplifiers, with N being the number of inputs/outputs of the WPD. We believe that our results represent an important step forward in the implementation of SOI-WPDs and their integration in complex photonic networks, particularly for mid-IR and quantum photonics applications.

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Section: Introductionmentioning

confidence: 99%

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Ortega‐Gomez¹,

Hernández²,

Oña³

et al. 2023

ACS Photonics

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“…As a result, such a method has seriously increased the complexity and volume of the system. As shown in [8,[10][11][12][13][14][15], PIN diodes were employed as key reconfigurable physical devices for flexible control of forward and backward beam switching, and then a feed network had to be introduced for spurring the PIN diodes. ese reconstructed patterns that are either discrete or complementary to each other were created by the on-off effect of diodes or by the discontinuous effect of impedance.…”

Section: Introductionmentioning

confidence: 99%

Design of Pattern Reconfigurable Patch Antenna Array Based on Reflective Phase-Shifter

Shang

Zeng

Cui

et al. 2022

International Journal of Antennas and Propagation

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A circularly polarized (CP) broadside antenna array with a continuously adjustable beam is proposed and implemented. First, a reflection phase shifter with varactor diodes loaded on two output terminals of a branch directional coupler is realized. By controlling the voltage across both ends of the varactor diodes in the terminal load circuit, the reactance of the load is changed, allowing control of port phase shift. Following that, the microstrip patch antenna array is combined with the reflection phase shifter to achieve the pattern reconstruction for the array. For verification, a prototype of the designed pattern reconfigurable antenna (PRA) is fabricated and measured. The measurement results indicate that the beam direction of the antenna can be continuously adjusted with a change in the voltage across the varactor diodes. The maximum beam direction of the antenna reaches ±21° when the biggest DC bias voltage across the varactor diode is chosen as 15 V. Besides, the antenna shows good CP performance in different beam directions.

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Pattern Reconfigurable Antenna Based on Phase-shifter

Shang

Zeng

2020

2020 Cross Strait Radio Science &Amp; Wireless Technology Conference (CSRSWTC)

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Implementation of beam-steering front-ends at 2.45 GHz using modified Wilkinson power dividers, reflexion type phase shifters and C-shape monopole antennas: First results

Cited by 5 publications

References 8 publications

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Noise Cancellation Effects in Integrated Photonics with Wilkinson Power Dividers

Design of Pattern Reconfigurable Patch Antenna Array Based on Reflective Phase-Shifter

Pattern Reconfigurable Antenna Based on Phase-shifter

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