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Balun

About: Balun is a research topic. Over the lifetime, 5375 publications have been published within this topic receiving 52256 citations. The topic is also known as: Telephone balance unit.


Papers
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Proceedings ArticleDOI
25 Jun 2012
TL;DR: In this paper, the design, fabrication and measurement of a bowtie antenna on a flexible Liquid Crystal Polymer (LCP) substrate is reported, where the antenna is fed by a balun transition which helps improve the gain up to 5.1 dB.
Abstract: The design, fabrication and measurement of a bowtie antenna on a flexible Liquid Crystal Polymer (LCP) substrate is reported in this paper. The antenna is fed by a balun transition which helps improve the gain up to 5.1 dB. The antenna performance is analyzed for both planar and curved substrates. The comparison between simulation and measurements shows a good agreement. This structure can either be used to sense the bending of the substrate or use the bending to tilt the beam.

21 citations

Proceedings ArticleDOI
Kevin W. Kobayashi1
17 Jun 1996
Abstract: This paper describes a unique HBT active transformer balun which has been monolithically integrated with a GaAs Schottky diode ring quad to construct a double balanced mixer which can operate from DC to >2 GHz. The HBT active balun transformer achieves

21 citations

Patent
07 Aug 2000
TL;DR: A passive, highly efficient, low noise adapter device as discussed by the authors includes a balun and noise reduction circuitry uniquely configured to convert an unbalanced signal line on a 50 ohm signal line to a balanced signal on a 100 ohm transmission line or vice versa.
Abstract: A passive, highly efficient, low noise adapter device includes a balun and noise reduction circuitry uniquely configured to converting an unbalanced signal line on a 50 ohm signal line to a balanced signal on a 100 ohm transmission line or vice versa. The device facilitates the use of commercially available and accepted test equipment for accurate transmission measurements on balanced twisted pairs of cables and connectors. A typical utilization includes an adapter device connected between the 100 ohm twisted pair cable and suitable test equipment such as a network analyzer and/or a signal generator for determining losses in the telephone wire and connectors.

21 citations

Journal ArticleDOI
TL;DR: In this article, a novel wideband microstrip-fed end-fire magnetoelectric (ME) dipole antenna element is proposed and exploited for millimeter-wave communications covering the 28, 37, and 39 GHz frequency band.
Abstract: A novel wideband microstrip-fed end-fire magnetoelectric (ME) dipole antenna element is proposed and exploited. The antenna yields advantages of small size, wide operating bandwidth, low cost, and stable gain. A prototype of the element has a bandwidth (SWR < 2) of 56.7% covering from 24 to 43 GHz with a gain of 4–6.7 dBi. An integrated balun covering the whole operating bandwidth is designed for the feed. A four-element linear antenna array of the antenna elements is implemented using a one-to-four microstrip power divider. The antenna array exhibits an operating bandwidth of 55.4% from 23.5 to 41.5 GHz with a maximum gain of 11.9 dBi. The antenna element and the array can be used for wireless equipment of millimeter-wave communications covering the 28, 37, and 39 GHz frequency band.

21 citations

Journal ArticleDOI
TL;DR: In this article, a hybrid integration between planar circuits and a nonradiative dielectric (NRD) waveguide is proposed with preliminary experiments, which utilizes co-layered arrangement of the two dissimilar structures.
Abstract: A concept of hybrid integration between planar circuits and a nonradiative dielectric (NRD) waveguide is proposed in this paper with preliminary experiments. This approach utilizes co-layered arrangement of the two dissimilar structures, which allows the NRD-guide in direct contact with (or surface mounted on) the planar circuits. Two basic building-block schemes are presented that involve microstrip line and coplanar waveguide (CPW) with the NRD-guide. The first is to deposit the NRD-guide on the top of a relatively thin microstrip substrate, thus forming unbalanced NRD-guiding hybrid circuits, while the second is to design CPW circuits directly etched on the ground planes of the NRD-guide. The unbalanced NRD-guide is subject to a certain leakage loss, but at a negligible level, and it may even be suppressed completely in certain circumstances. Such an integration technique is found consistent with the concept of low loss interconnects at millimeter-wave frequencies. In other words, the NRD-guide can be used for viable interconnects of co-layered planar circuits with a simple "put and cover" procedure. Measured results of several co-layered hybrid transitions/baluns indicate that satisfactory transmission properties can readily be achieved. The new building blocks are expected to provide an alternative design approach to three-dimensional multilayered millimeter-wave circuits and systems.

21 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202361
2022242
2021130
2020280
2019327
2018310