| 1. |
- Bergstedt, Leif, et al.
(författare)
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A detector for detecting electromagnetic radiation
- 2006
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The invention relates to a semiconductor detector for detecting electromagnetic radiation, comprises a semiconductor junction formed by a layer arranged on a substrate. A first and a second electrode are arranged on the layer adjacent to each other and separated by an exposed area of the layer arranged to receive electromagnetic radiation that has an incident angle with respect to the surface of the substrate. Received radiation is transformed to a travelling wave that propagates along the first electrode towards the output end of said first electrode. The detector comprises at least a first tapered structure arranged on the substrate to slow down a signal received from incident radiation at a given cross section of the first electrode, compared to signals received at any preceding cross section of the first electrode, which reduces the phase difference between the received signals so that they sum up substantially in-phase at the output end of said first electrode.
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| 2. |
- Bergstedt, Leif, et al.
(författare)
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Antenna arrangement
- 2000
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- A single-frequency antenna arrangement includes a ground plane, a dielectric substrate, a first antenna contour located on a first side of the dielectric substrate and a second antenna contour located on second side of the dielectric substrate. The first antenna contour and the second antenna contour have substantially the same dimensions in their longitudinal directions and transverse directions. The first antenna contour and the second antenna contour are galvanically interconnected by at least one connection.
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| 3. |
- Bergstedt, Leif, et al.
(författare)
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Antenna arrangement and a communication arrangement comprising the same
- 2002
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The present invention relates an antenna arrangement (23, 330, 430, 530, 630) comprising a fit layer (331, 431, 531, 631) consisting of a dielectric material and a second reflective layer (335, 435, 535, 640, The dielectric material has variable dielectric characteristics. An electromagnetic radiation (50) passing through said first layer (331, 431, 531, 631) and at least partly reflected by said second layer (335, 435, 535, 640) is modulated by varying said variable dielectric characteristics of said first layer.
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| 4. |
- Bergstedt, Leif, et al.
(författare)
-
Arrangement mounted on a printed circuit board and method of producing such an arrangement
- 2004
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- The invention relates to a microwaveguide that is integrated in the dielectric layer of a conductor carrier, e.g. a printed circuit board. The waveguide enables different types of active and/or passive functions intended to influence the signals sent through the waveguide to be integrated at appropriate positions in the waveguide
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| 5. |
- Bergstedt, Leif, et al.
(författare)
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Arrangement mounted on a printed circuit board and method of producing such an arrangement
- 2002
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The invention relates to a microwaveguide that is integrated in the dielectric layer of a conductor carrier, e.g. a printed circuit board. The waveguide enables different types of active and/or passive functions intended to influence the signals sent through the waveguide to be integrated at appropriate positions in the waveguide
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| 6. |
- Bergstedt, Leif, et al.
(författare)
-
Arrangement relating to conductor carriers and methods for the manufacture of such carriers.
- 2003
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- Method and arrangements for reducing crosstalk between conductors on a conductor carrier, and methods for manufacturing conductor carriers including these arrangements are presented. Crosstalk between the conductors is prevented by providing a dielectric material in the space between each conductor and an earth plane so that the electric field can be tied down within this space and thus prevent leakage of field lines to the co-lateral conductors. The capacitance is increased by an arrangement in the space immediately beneath the conductor so as to reduce the distance between conductors and the earth plane and/or through the medium of a dielectric material that has a higher dielectric index than the dielectric material.
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| 7. |
- Bergstedt, Leif, et al.
(författare)
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Component for electromagnetic waves and a method for manufacturing the same
- 2007
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- The present invention relates to a method for fabricating a cavity in substrate for a component for electromagnetic waves, the method comprising providing said cavity by removal of material from said substrate by removal of material by immersing the substrate in a liquid bath of a chemical etchant, so that resultant cavity has a top and a bottom side and sidewalls, and said cavity at one of said top and/or bottom sides exhibits an at least a four sided opening having an opening with at least two different adjacent angles. The invention also relates to the component for microwave applications.
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| 8. |
- Bergstedt, Leif, et al.
(författare)
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Component for electromagnetic waves and a method for manufacturing the same
- 2005
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The present invention relates to a method for fabricating a cavity in substrate for a component for electromagnetic waves, the method comprising providing said cavity by removal of material from said substrate by removal of material by immersing the substrate in a liquid bath of a chemical etchant, so that resultant cavity has a top and a bottom side and sidewalls, and said cavity at one of said top and/or bottom sides exhibits an at least a four sided opening having an opening with at least two different adjacent angles. The invention also relates to the component for microwave applications.
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| 9. |
- Bergstedt, Leif, et al.
(författare)
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Microstrip arrangement
- 2001
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- The invention relates to a microstrip arrangement comprising a first and a second microstrip conductor. The two microstrip conductors have essentially the same dimensions in their longitudinal direction and transverse direction, and are galvanically interconnected by means of at least one connection. The two microstrip conductors also extend essentially parallel to one another on either side of a dielectric material. As a result of this design of the microstrip arrangement, the field losses and also other influences caused by the dielectric material will be very considerably reduced, and in practice a resultant microstrip arrangement is obtained, which, with regard to its electrical performance, appears to be suspended in the air. Preferred embodiments comprise a microstrip antenna, a circuit board and a conductor application
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| 10. |
- Gevorgian, Spartak, 1948, et al.
(författare)
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Arrangement for more even current distribution in a transmission line
- 2002
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Patent (övrigt vetenskapligt/konstnärligt)abstract
- More even current distribution in a transmission line is provided by an arrangement including a first conductive layer, a dielectric layer and a ground plane. The first conductive layer, the dielectric layer and the ground plane extend mainly in substantially the same direction, with the dielectric layer arranged between the first conductive layer and the ground plane. The arrangement includes an object located between the dielectric layer and the ground plane. The object can be electrically conductive or made of a dielectric material.
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