Stripline

Résumé

In electronics, stripline is a transverse electromagnetic (TEM) transmission line medium invented by Robert M. Barrett of the Air Force Cambridge Research Centre in the 1950s. Stripline is the earliest form of planar transmission line. Description A stripline circuit uses a flat strip of metal which is sandwiched between two parallel ground planes. The insulating material of the substrate forms a dielectric. The width of the strip, the thickness of the substrate and the relative permittivity of the substrate determine the characteristic impedance of the strip which is a transmission line. As shown in the diagram, the central conductor need not be equally spaced between the ground planes. In the general case, the dielectric material may be different above and below the central conductor. To prevent the propagation of unwanted modes, the two ground planes must be shorted together. This is commonly achieved by a row of vias running parallel to the strip on each side. Lik

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https://en.wikipedia.org/wiki/Stripline

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Stacked patch antenna and hybrid beamforming network for 5G picocell applications

Danelys Rodríguez Avila, Anja Skrivervik Favre

This paper addresses the design of an antenna array for a portable picocell station with omnidirectional coverage. The proposed solution includes a stacked patch antenna as a single radiating element of the antenna array and a hybrid beamforming network. The antenna element works at 26 GHz with a bandwidth of 20% and a gain of approximately 8.5 dB along the operational bandwidth. The antenna is fed by a suspended stripline transitioned from a waveguide. This antenna element is used to compute a 5x12-element antenna array fed by the hybrid beamforming network. Results are analytically obtained for a fixed analog beamforming network that generates a csc squared pattern shape in elevation. Additionally, a digital beamforming network is computed to perform beamsteering for a desired set of constraints in the azimuth plane. Simulated results of the complete system yield promising insights on the capacity of the proposed design to provide omnidirectional coverage.

IEEE2019

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Practical issues related to the design of UWB directional couplers in strip line technology

Baptiste Fernand Hornecker, Juan Ramon Mosig

Recently, the study of slot-coupled directional couplers has led to compact and elegant topologies for UWB applications. The most common design consists in two elliptically shaped lines coupled through an elliptically shaped slot in a common ground plane. In this paper, this concept is applied to the design of Ku-Band directional couplers manufactured in stripline technology. It turns out that parallel plate waveguide modes (PPWM) are strongly excited, which impacts the overall working of the structure. In order to mitigate this issue, two solutions have been simulated and their results are compared.

Ieee2013

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Circularly polarized aperture coupled stacked patch antenna element for Ka-band

Rafal Glogowski, Juan Ramon Mosig, Jean-François Zürcher

This paper presents the design and implementation of a circularly polarized stacked patch antenna element for Ka-band applications. The printed element has been developed to be used in a LEO satellite antenna array. Two circular stacked patches, with air gaps, are placed inside a circular cavity. A suspended stripline is used to feed the patches through a cross slot cut in the bottom of the cavity. Broadband input impedance, radiation pattern and axial ratio characteristics have been obtained. The numerical simulations have been validated with experimental results.

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

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