Abstract:
PROBLEM TO BE SOLVED: To provide a new circuit to process a radio frequency signal. SOLUTION: The circuit includes a substrate on which the circuit is placed. The substrate may contain a meta-material and may be incorporated by using at least one substrate layer. A four-port circuit and at least one ground are connected to the substrate. The substrate layer contains a first region with a first set of substrate properties and a second region with a second set of substrate properties. The substrate properties include permittivity and permeability. A substantial portion of the four-port circuit is connected to the second region. The permittivity and/or permeability of the second region are set higher than the permittivity and/or permeability of the first region. The increased permittivity and permeability reduce the size of the four-port circuit and decrease amounts of impedance, inductance, capacitance, a quality factor (Q), and a voltage associated with the four-port circuit. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an equipment increasing design latitude of radio frequency circuit, that is, furthermore, which optimize a dielectric circuit board material for improving performance in a single port resonant line. SOLUTION: A printed circuit for treating a radio frequency signal is described. The printed circuit comprises a substrate. The substrate is a meta-material and can include at least one dielectric layer. The dielectric layer has a set of primary dielectric characteristics in a primary region and can have a set of second dielectric characteristics in a second region. A dielectric constant and/or a magnetic permeability of set of second dielectric characteristics can differ from a set of the primary dielectric characteristics. A printed circuit can include a connecting earth connecting to a single port resonant line and the substrate. The dielectric characteristics can modulate dimensionality of the resonant line. The dielectric characteristics can modulate impedance, acutance, and/or capacitance of the resonant line. The resonance characteristic of the resonant line can be distributed through the substrate. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for optimizing a dielectric circuit substrate material in order to increase the degree of freedom in design of an RF (radio frequency) circuit, and more specifically, to improve the performance in a resonant line. SOLUTION: This relates to a circuit for processing radio frequency signals. The resonant circuit includes a substrate. The substrate can be a meta-material and can incorporate at least one substrate layer. A resonant line and at least one ground can be connected to the substrate. One end of the resonant line can be electrically short circuited to the ground or electrically open circuited to the ground. The substrate layer can include a first region having first substrate properties and at least one second region having second substrate properties. At least a portion of the resonant line can be connected to the second region. The first and/or the second set of substrate properties can be differently changed to vary a permittivity and/or a permeability in a selected region. A third region can be also provided with a third set of substrate properties. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for optimizing a dielectric circuit substrate material in order to increase the degree of freedom in design of an RF (radio frequency) circuit, and more specifically, to improve its performance. SOLUTION: A substrate includes at least one region having a relative permeability or a relative permittivity different from a remaining portion of the substrate. To control the permeability and the permittivity in this way, a meta-material is used to selectively change one portion of the substrate. A transmission transformer is disposed on the substrate and coupled to the regions. COPYRIGHT: (C)2004,JPO
Abstract:
A slot fed microstrip antenna (100) having an improved stub (118) provides enhanced efficiency through more efficient coupling of electromagnetic energy between the feed line (117) and the slot (106). A dielectric layer (105) disposed between the feed line (117) and the ground plane (108) provides a first region (112) having a first relative permittivity and at least a second region (113) having a second relative permittivity. The second relative permittivity is higher as compared to the first relative permittivity. The stub (118) is disposed on the high permittivity region (113). The dielectric layer can include magnetic particles, which are preferably disposed underlying the stub.
Abstract:
A slot fed microstrip patch antenna (300) includes a conducting ground plane (308), the conducting ground plane (308) including at least one slot (306). A dielectric material is disposed between the ground plane (308) and at least one feed line (317), wherein at least a portion of the dielectric layer (313) includes magnetic particles (324). The dielectric layer between the feed line (317) and the ground plane (308) provides regions having high relative permittivity (313) and low relative permittivity (312). At least a portion of the stub (318) is disposed on the high relative permittivity region (313).
Abstract:
An optically active composition (100) for optical applications has been identified. The optically active composition (100) can include at least one cyclic molecule having a nanocore (112) disposed within the cyclic molecule to form a filled ring (108). The composition (100) is optically transmissive for at least one photonic wavelength that would not otherwise be transmitted by the composition (100) if the nanocore were absent from the cyclic molecule. The cyclic molecule can be a carbon ring, an aromatic ring, or a heterocyclic ring. The filled ring (108) can be attached to a chiral molecule which is a repeat unit (102) in a polymeric backbone. A second filled ring (110) which causes the composition to be optically transmissive at a second wavelength also can be attached to the chiral molecule (102) as well. An electric field can be applied to the filled ring (108) to adjust the wavelength at which filled ring (108) is transmissive.
Abstract:
A method for making an electronic device includes positioning first (12) and second members (14) so that opposing surfaces thereof are in contact with one another, the first member (12) comprising silicon and the second member (14) comprising a low temperature co-fired ceramic (LTCC) material. The method further includes anodically bonding together the opposing surfaces of the first and second members to form a hermetic seal therebetween. The anodic bonding provides a secure and strong bond between the members without using adhesive. The method may further include forming at least one cooling (16, 17) structure in at least one of the first and second members. The least one cooling structure may comprise at least one first micro-fluidic cooling structure in the first member, and at least one second micro-fluidic cooling structure in the second member aligned with the at least one first micro-fluidic cooling structure.
Abstract:
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).
Abstract:
A crossed slot fed microstrip antenna (100). The antenna (100) includes a conducting ground plane (125), which has at least one crossed slot (125), and at least two feed lines (105). The feed lines (105) have respective stub regions (115) that extend beyond the crossed slot (125) and transfer signal energy to or from the crossed slot (125). The antenna (100) also includes a first substrate (150) disposed between the ground plane (120) and the feed lines (105). The first substrate (150) includes a first region and at least a second region, the regions having different substrate properties. The first region is proximate to at least one of the feed lines (105).