Ka-Band Rectangular-Waveguide Gysel Power Divider with Low Insertion Loss and High Output Isolation

Song, Kaijun; Yan, Yuchen; Zhou, Yedi; Fan, Maoyu; Yang, Fan

doi:10.1007/s10762-018-0525-z

Cited by 11 publications

(7 citation statements)

References 18 publications

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“…The poor isolation can be traced back to the generic properties of the three-port T-junction power combiner, where not all ports can be simultaneously matched. To improve the isolation between the input ports, either two isolation ports can be added to the structure or a thin-film resistive septum can be inserted between the WR3-waveguide input ports [42], [49].…”

Section: Numerical Analysis and Experimental Resultsmentioning

confidence: 99%

Novel 3-D Multilayer Terahertz Packaging Technology for Integrating Photodiodes Arrays and Rectangular Waveguide-Power Combiners

Makhlouf

Steeg

Haddad

et al. 2020

IEEE Trans. Microwave Theory Techn.

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A novel 3-D multilayer packaging technology for integrating an array of indium phosphide (InP)-based terahertz photodiodes (THz-PDs) with a rectangular waveguide power combiner (WR-PC) is proposed. The packaging concept is based on a vertical integration of an InP THz-PDs array with a multilayered WR-PC made of metallized glass-reinforced epoxy FR4 laminates using direct wafer bonding. The key motivation of this work is to develop a low-cost packaging technology for coherent power combining in the THz regime. The proposed multilayered packaging technology is generic, i.e., in principle, it would allow the integration of different and multiple planar arrays featuring photonic or electronic devices. To our knowledge, this is the first 3-D packaging concept for the THz frequency range that enables the integration of 2-D arrays of photonic or electronic devices. As a proof of concept, we here report on the design, fabrication, and experimental characterization of a straight hollow rectangular waveguide (WR-waveguide) and a 2 × 1 WR-PC for the WR3-band (220-320 GHz). Both packages feature standard cross-sectional hollow WR3-waveguides (862 µm × 431 µm) and corresponding standard UG-387/U-M flanges. They are fabricated using a stack of vertically bonded unit cells, each consisting of a 50-µm-thick glass-reinforced epoxy FR4 laminate with a 23-µm-thick top and bottom metallization. The size of a single quadratic FR4 unit cell is 24 mm × 24 mm. The fabricated straight WR3-waveguide consists of a stack of 57 FR4 unit cells of a total length of 5.4 mm. The measured transmission loss is less than 0.3 dB/mm and the return loss (RL) is less than 10 dB, within the entire WR3-band. Next, a multilayered FR4 2 × 1 WR3-PC is reported. Its design is based on that of a T-junction in H-plane where the inputs are modified to be on the same plane for facilitating subsequent integration with the planar InP chips of THz-PDs. The length of the WR3-PC is intentionally reduced for compactness and its impedance is gradually matched to achieve a low insertion loss (IL) over the Manuscript

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Section: Numerical Analysis and Experimental Resultsmentioning

confidence: 99%

Novel 3-D Multilayer Terahertz Packaging Technology for Integrating Photodiodes Arrays and Rectangular Waveguide-Power Combiners

Makhlouf

Steeg

Haddad

et al. 2020

IEEE Trans. Microwave Theory Techn.

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“…With the development of wireless communication technology, power dividers/combiners have more and more extensive application in wireless communication system. Various power dividers have been proposed, veri ed and applied one after another, mainly microstrip power divider [1][2][3][4] and cavity power divider [5][6][7][8][9][10][11][12][13][14]. Some of the more applied structures are wilkson power dividers [15], Lange couplers [16] and branch line couplers [17].…”

Section: Introductionmentioning

confidence: 99%

W-band Low-Loss Eight-way Radial-Waveguide Power Divider Based on Coaxial Mode Transition

Song

Zhu

et al. 2022

Preprint

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A W-band eight-way radial-waveguide power divider with low insertion loss and high power-combining efficiency has been proposed in this paper. The coaxial waveguide has been utilized in the eight-way radial-waveguide power divider as a transition from the rectangular waveguide to radial waveguide. The structure of the coaxial mode transition from the rectangular waveguide to radial waveguide is simple and its electrical length is much shorter than others’ mode transition, which results a low insertion loss and high power power-combining efficiency. The microwave signal was input from the rectangular waveguide (TE10 mode) and transmitted to the radial waveguide (cylindrical TEM mode) through the coaxial waveguide (TEM mode). Finally, the signal in radial waveguide is divided into eight ways with equal power and equal phase by the eight output standard rectangular waveguide. To verify the presented power divider, a W-band eight-way power divider is fabricated and measured. The measured results show that, over the frequency range from 82GHz to 110GHz, the measured input return loss is greater than 15dB, the measured average insertion loss are about 9.4 ± 0.5dB, the phase imbalance is about ± 5°, and the power-combining efficiency is about 91%.

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“…In contrast, the Gysel PD is suitable for high power applications due to its two short-ended resistors with good thermal conductivity, although it has a larger size. [1][2][3][4][5][6] So, designing a miniaturized PD with excellent power handling, wide bandwidth, perfect isolation, and suppressing unwanted harmonics is a continuous challenge for the designers.…”

Section: Introductionmentioning

confidence: 99%

A compact Gysel power divider with ultra‐wide rejection band and high fractional bandwidth

Zonouri

Hayati

2021

Int J RF Microw Comput Aided Eng

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In this paper, one kind of miniaturized Gysel power divider (GPD) with ninth harmonic suppression is proposed. In this structure to weaken unwanted harmonics, radial and new trapezoidal-shaped resonators are placed instead of the quarter-wavelength transmission lines of the conventional GPD. Moreover, these resonators create eight transmission zeros and occupy small circuit sizes. For designing the proposed GPD, appropriate electrical lengths of transmission lines are selected. This GPD has high −15 dB fractional bandwidth, 71%, good isolation, > 15 dB, and compact sizes, 0.07 λ g ×0.22 λ g . The operating frequency of the designed power divider is 2.1 GHz that can be used in many WCDMA applications.

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Ka-Band Rectangular-Waveguide Gysel Power Divider with Low Insertion Loss and High Output Isolation

Cited by 11 publications

References 18 publications

Novel 3-D Multilayer Terahertz Packaging Technology for Integrating Photodiodes Arrays and Rectangular Waveguide-Power Combiners

Novel 3-D Multilayer Terahertz Packaging Technology for Integrating Photodiodes Arrays and Rectangular Waveguide-Power Combiners

W-band Low-Loss Eight-way Radial-Waveguide Power Divider Based on Coaxial Mode Transition

A compact Gysel power divider with ultra‐wide rejection band and high fractional bandwidth

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