Investigation of Multilayer Magic-T Configurations Using Novel Microstrip-Slotline Transitions

Marynowski, Wojciech; Mazur, J.

doi:10.2528/pier12032303

Cited by 8 publications

(8 citation statements)

References 24 publications

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“…There are magic-Ts miniaturized using LTCC technology [17], substrate integrated waveguide [18,19] and NRD-guide [20]. Other planar magic-Ts usually use microstrip lines and slot lines [21,22,23,24,25,26,27,28,29,30]. These magic-Ts are easy to be integrated with microwave circuits and an-tennas due to their simple structures.…”

Section: Introductionmentioning

confidence: 99%

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

Nakahara

Tanaka

Toyoda

2021

IEICE Electron. Express

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This letter proposes a novel planar magic-T employing microstrip lines and a coplanar stripline (CPS) integrating a microstrip-to-CPS transition. The proposed magic-T uses a CPS instead of the slot line used in conventional planar magic-Ts to reduce the radiation loss. Defected ground structures (DGSs) are also used to suppress undesired common modes. This circuit has several attractive advantages in comparison with the conventional similar designs such as excellent amplitude and phase performance, compactness, and widely useable structure using a microstripto-CPS transition. The design, analysis and prototype parameters are discussed, followed by the measured and simulated results of the proposed magic-T.

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Section: Introductionmentioning

confidence: 99%

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

Nakahara

Tanaka

Toyoda

2021

IEICE Electron. Express

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“…Magic-T as an important device for microwave and millimeterwave circuits is widely used in microwave integrated circuits, ultra-wideband reception, and other fields. It is urgent to meet the requirements of ultra-wideband, miniaturization, and high-performance systems [1,2].…”

Section: Introductionmentioning

confidence: 99%

A Novel Ultra-Wideband Design of Ridged Siw Magic-T

Wang¹,

Ling²

2019

PIER Letters

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In order to obtain a wideband sum-and-difference network, a novel ridged substrate integrated waveguide (RSIW) magic-T is designed. The proposed magic-T is composed of a five-layer RSIW structure. The signal input from the coaxial H-plane port is transmitted to RSIW through a stripline and split into two in-phase and equal signals at the output ports on the top and bottom layers because of the vertically symmetric structure. An E-plane SIW power divider is utilized to realize the E-plane input/output port of the magic-T. A remarkable bandwidth improvement is achieved due to the ridged structure and the wide bandwidth of a ladder-shape stripline optimized by genetic algorithm (GA). Measured results indicate that the magic-T has a fractional bandwidth (FBW) of 78.7% (6.4-14.7 GHz) with return loss better than 18.1 dB and great isolation characteristics.

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“…In the literature, there are several studies which are aimed at reducing the size of the conventional rat-race hybrid. Different techniques are used to achive this, such as a folded line structure [12], periodic stepped-impedance resonator [13], [14], defected ground plane structures [15] and the the multi-layer structures [16][17][18]. In all the cases, such approaches lead to a reduction in the operational bandwidth and the final structures are difficult to implement.…”

Section: Introductionmentioning

confidence: 99%

Broadband Compact Single-Layer Magic-T Junction with Separation of DC Signals between All Ports

Marynowski¹

2018

RADIOENGINEERING

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A novel structure for a four-port microstrip magic-T junction is presented. The device is composed of microstrip and slotline circuits etched onto two sides of a dielectric substrate. The device is extremely compact and occupies an area more than three times smaller than similar structures recently reported in the literature. The novelty of the device lies in the use of microstrip/slotline transitions for both input ports: summation (in-phase) port and difference (out-of-phase) port. This ensures electrical separation for DC signals between all four ports, a wide operation band and a very small size for the device. The fabricated prototype operates in a 95% fractional bandwidth with return losses better than 10 dB and isolation between input ports better than 35 dB. The insertion losses for the excitation at the summation port are about 0.8 dB and for the excitation at the difference port are about 1.4 dB. In the operation band of the device, the maximum amplitude imbalance is equal to ±0.3 dB, whereas the maximum phase imbalance is equal to ±4 • .

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Investigation of Multilayer Magic-T Configurations Using Novel Microstrip-Slotline Transitions

Cited by 8 publications

References 24 publications

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

A novel compact planar magic-T using CPS and microstrip-to-CPS transition

A Novel Ultra-Wideband Design of Ridged Siw Magic-T

Broadband Compact Single-Layer Magic-T Junction with Separation of DC Signals between All Ports

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