摘要:
The present invention relates to a circuit for processing radio frequency signals. The resonant circuit includes a substrate (112). The substrate (112) can be a meta material and can incorporate at least one substrate layer. A resonant line (103) and at least one ground (116) can be coupled to the substrate (112). An end of the resonant line (103) can electrically shorted to the ground (116) or electrically open with respect to ground. The substrate layer can include a first region with a first set of substrate properties and at least a second region (114) with a second set of substrate properties. At least a portion of the resonant line (103) can be coupled to the second region (114). The first and/or second set of substrate properties can be differentially modified to vary a permittivity and/or a permeability over a selected region. A third region can be provided with a third set of substrate properties as well.
摘要:
A circuit for processing radio frequency signals. The circuit includes a substrate (102) where the circuit can be placed. The substrate can be a meta material and can incorporate at least one dielectric layer. A quarter-wave transformer (106) and at least one ground can be coupled to the substrate (102). The dielectric layer can include a first region (102) with a first set of substrate properties and a second region (104) with a second set of substrate properties. Substrate properties can include a permittivity and a permeability. A substantial portion of the quarter-wave transformer (106) can be coupled to the second region (104). The permittivity and/or permeability of the second region (104) can be higher than the permittivity and/or permeability of the first region (102).
摘要:
The invention concerns an impedance transforming device that includes a dielectric circuit board substrate. The substrate has at least one region that has a relative permeability or a relative permittivity different from a remaining portion of the substrate. In order to control the permeability and permittivity, in this way, meta-materials can be used to selectively modify portions of the substrate. A transmission line transformer is disposed on the substrate and coupled to the region.
摘要:
A circuit for processing radio frequency signals. The circuit includes a substrate where the circuit can be placed. The substrate can be a meta-material and can incorporate at least one substrate layer. A four port circuit and at least one ground can be coupled to the substrate. The substrate layer can include a first region with a first set of substrate properties and a second region with a second set of substrate properties. Substrate properties can include permittivity and permeability. A substantial portion of the four port circuit can be coupled to the second region. The permittivity and/or permeability of the second region can be higher than the permittivity and/or permeability of the first region. The increased permittivities and/or permeabilities can reduce a size of the four port circuit and effect a change in a variety of electrical characteristics associated with the four port circuit.
摘要:
A slot fed microstrip patch antenna (200) includes an electrically conducting ground plane (208), the ground plane (208) having at least one coupling slot (206) and at least a first patch radiator (209). An antenna dielectric substrate material (205) is disposed between the ground plane (208) and the first patch radiator (209), wherein at least a portion of the antenna dielectric (210) includes magnetic particles (214). A feed dielectric substrate (212) is disposed between a feed line (217) and the ground plane (208). Magnetic particles can also be used in the feed line (217) dielectric. Patch antennas according to the invention can be of a reduced size through use of high relative permittivity dielectric substrate portions, yet still be efficient through use of dielectrics including magnetic particles which permit impedance matching of dielectric medium interfaces, such as the feed line (217) into the slot (206).