New Wideband Miniature Branchline Coupler on IPD Technology for Beamforming Applications

Titz, Diane; Ferrero, Fabien; Pilard, Romain; Laporte, Claire; Jan, Sébastien; Ezzeddine, Hilal; Gianesello, Frédéric; Gloria, D.; Jacquemod, G.; Luxey, Cyril

doi:10.1109/tcpmt.2014.2311092

Cited by 35 publications

(13 citation statements)

References 22 publications

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“…Branch-line couplers (BLCs) belong to the key components of many microwave devices including beamforming networks [ 1 , 2 ], balanced mixers [ 3 , 4 ], amplifiers [ 5 , 6 ], multiplexers [ 7 , 8 ], and others. Conventional BLCs are characterized by large dimensions as they consist of two orthogonal pairs of 90° transmission lines (TLs).…”

Section: Introductionmentioning

confidence: 99%

Low-Cost Automated Design of Compact Branch-Line Couplers

Bekasiewicz

2020

Sensors

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Branch-line couplers (BLCs) are important components of wireless communication systems. Conventional BLCs are often characterized by large footprints which make miniaturization an important pre-requisite for their application in modern devices. State-of-the-art approaches to design compact BLCs are largely based on the use of high-permittivity substrates and multi-layer topologies. Alternative methods involve replacement of transmission-line sections of the circuit, with their composite counterparts, referred to as compact cells (CCs). Due to the efficient use of available space, CC-based couplers are often characterized by small footprints. The design of compact BLCs is normally conducted based on engineering experience. The process is laborious and requires many adjustments of topology followed by manual or, semi-automatic tuning of design parameters. In this work, a framework for low-cost automated design of compact BLCs using pre-defined CCs is proposed. The low cost of the presented design technique is ensured using equivalent-circuit models, space mapping correction methods, and trust-region-based local optimization algorithms. The performance of the framework is demonstrated based on three examples, concerning the design of unequal-power split coupler, comparison of automatically generated compact BLCs, as well as rapid re-design of the coupler for different substrates. Furthermore, the approach has been benchmarked against the state-of-the-art methods for low-cost design of circuits.

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Section: Introductionmentioning

confidence: 99%

Low-Cost Automated Design of Compact Branch-Line Couplers

Bekasiewicz

2020

Sensors

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“…In [9], lumped-element-equivalent artificial transmission lines are used for circuit miniaturisation [9]. On the other hand, miniaturised BMs in chip forms are also demonstrated with different technologies, including CMOS [10,11], glass-IPD [12], and LTCC [13]. However, when the number of ports increases, the size of the BM becomes very bulky.…”

Section: Introductionmentioning

confidence: 99%

Designs of deformed eight‐way Butler matrix with port reduction for massive array beamforming

Chang

2019

IET Microwaves, Antennas & Propagation

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Massive‐MIMO technology has been proposed for 5G systems, in which beamforming is one of the essential features. In this work, folding deformation technique is proposed to reduce the size of the Butler matrix (BM) used in array system. Based on the mirror symmetry of the conventional BMs, partial components can be saved. By embedding some switches from the feeding network into the internal BMs, the number of building blocks and input ports is decreased. For demonstration, both 4 × 8 BMs and 2 × 8 BMs deformed from a conventional 8 × 8 BM are designed and implemented in this work. Up to 25% reduction in size is achieved when compared to a conventional 8 × 8 BM. The proposed BMs not only can generate eight orthogonal beams, but also can perform the beam synthesis, showing a great potential for future communication systems.

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“…Branch line couplers and power dividers are a few of the main components used to design a wireless transceiver. For example, the BLC plays a vital role in designing beamforming network/antenna array/Butler Matrix [1][2][3][4][5][6][7][8][9][10]. Many structures and design methods were proposed to make these components dual/multiband such as T-shaped TL [11], PIshaped TL [12][13][14], PI-shaped TL structure with resonator [15], two-section TL [16], extended port [17], metamaterial [18,19], composite right left-handed material [20], PI-shaped TL with impedance buffering technique [21] and coupled lines [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A New Equal Power Quadrature Branch Line Coupler for Dual-Band Applications

Zaidi¹,

Imam²,

Kanaujia³

et al. 2018

PIER Letters

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Abstract-We present a new equal power quadrature branch line coupler (BLC) for dual-band applications in this paper. A new topology of the dual-band quarter wavelength transmission lines (TL) with the derivation of design equations is also introduced. The proposed BLC is designed using Advanced Design System (ADS) and fabricated on Rogers 5870 at 0.9 GHz and 2.4 GHz center frequencies. The design approach for the proposed dual-band BLC is endorsed by the simulated and measured results. A comparative analysis of this BLC with the previous BLCs is also carried out.

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New Wideband Miniature Branchline Coupler on IPD Technology for Beamforming Applications

Cited by 35 publications

References 22 publications

Low-Cost Automated Design of Compact Branch-Line Couplers

Low-Cost Automated Design of Compact Branch-Line Couplers

Designs of deformed eight‐way Butler matrix with port reduction for massive array beamforming

A New Equal Power Quadrature Branch Line Coupler for Dual-Band Applications

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