Patent
Directional filter using meander lines
A Karp
- 19 Apr 1972
11
TL;DR: In this article, a frequency-selective directional coupler is provided which comprises a fast wave transmission line placed in proximity to a slow-wave transmission line, which can be a waveguide, strip-line, or microstrip line.
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Abstract: A frequency-selective directional coupler is provided which comprises a fast-wave transmission line placed in proximity to a slow-wave transmission line. The fast wave line can be a waveguide, strip-line, or microstrip line which follows a fairly direct path between two points. The slow wave line can be a helix or a meander line.
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Citations
Patent
Radio frequency identification tag
Michael John Brady,Thomas Anthony Cofino,Harley Kent Heinrich,Glen Walden Johnson,Paul A. Moskowitz,George Frederick Walker +5 more
- 20 Dec 2012
TL;DR: In this article, a sensor system (1000) comprises a tag (100) consisting of at least one radio-frequency chip (130) having a memory element, an antenna (140) disposed in electrical communication with output terminals of the chip and a non-conductive coating (115) disposed upon a surface of the tag.
443
Patent
Fabrication method and apparatus for antenna structures in wireless communications devices
Jason M. Hendler,Floyd A. Asbury,Frank M. Caimi,Michael H. Thursby,Kerry L. Greer +4 more
- 16 Apr 2002
TL;DR: In this paper, a meanderline antenna is constructed by applying a conductive ink or other conductive material to a flexible substrate, which is then shaped by removing regions and folding other regions along perforated or scored lines to fit the antenna within the available space of a wireless device.
42
Patent
Low profile, high gain frequency tunable variable impedance transmission line loaded antenna
Michael H. Thursby,Kerry L. Greer,Young-Min Jo,Young-ki Kim,Jay A. Kralovec +4 more
- 31 May 2001
TL;DR: In this article, a meanderline-loaded antenna consisting of a ground plane, a non-driven element, a driven or receiving element affixed to the ground plane and a horizontal element between the driven and the nondriven elements is described.
30
Patent
Low profile dielectrically loaded meanderline antenna
Jay A. Kralovec,Jason M. Hendler +1 more
- 31 May 2002
TL;DR: In this paper, a ground plate and a feed plate are oriented in a substantially parallel relation on two opposing sides of the dielectric substrate, and conductive vias extend between the feed plate and the ground plate through the interior of the substrate.
24
Patent
Meanderline coupled quadband antenna for wireless handsets
Frank M. Caimi,Gregory A. O'Neill +1 more
- 03 Jun 2005
TL;DR: In this paper, a ground return conductively couples one or more regions of the counterpoise to the meanderline to provide operation in a plurality of frequency bands in a high frequency band.
21
References
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