Abstract:
An antenna structure with reduced bulkiness and capable of changing antenna directivity is provided. In order to achieve such an effect, the antenna structure includes a feed element of one of an inverted F type and a loop type, and a passive element of one of the inverted F type and loop type, and having a variable reactor so as to be capable of changing an electrical length, and the feed element and passive element are disposed with a predetermined distance therebetween.
Abstract:
A process produces an optically active amine or its salt and includes the steps of reacting a ketone of Formula (1a) wherein R1 is typically an unsubstituted or substituted hydrocarbon group; and R2a is typically a hydrocarbon group having at least one oxo group and optionally having other substituent, with an optically active amine of Formula (2): wherein R3 is an unsubstituted or substituted aryl group; R4 is an unsubstituted or substituted lower alkyl group; and C1 is an asymmetric carbon atom, in the presence of an organic acid to thereby yield a corresponding optically active imine, hydrogenating the imine in the presence of a catalyst to yield a corresponding amine, subjecting the amine or its salt to hydrogenolysis in the presence of a catalyst, and reducing the hydrogenolyzed product with a reducing agent.
Abstract:
A fixed pattern detection device in which the device is fed as a received signal with a pattern of a length of N chips. The received signal is obtained by dividing and re-arraying each of K (integer) symbols in terms of a chip period as a unit, each symbol being spread with the spread code (PN) at a rate of M (integer) chips per symbol, and on repeatedly inserting into the re-arrayed symbols a signature pattern of a length K having one chip period as a unit, by M times, where N=K×M. The device includes first-stage correlators taking correlation between M received signals and M spread code sequences obtained on decimating a spread code sequence of a length N, and a second stage correlators taking correlation between the correlation values associated with K signatures output by the first-stage correlators and a pre-defined signature pattern.
Abstract:
A method for producing an isocyanate group-blocked liquid urethane prepolymer which comprises: reacting a lactone-modified diol (3) with a polyfunctional isocyanate (4) to form an isocyanate group-having urethane prepolymer (5), wherein said lactone-modified diol (3) is obtainable by ring-opening addition polymerization of a lactone monomer (2) with a diol (1) selected from the group consisting of a polyalkylene ether diol, a polyester diol and a polycarbonate diol; and then reacting said urethane prepolymer with a blocking agent (6).
Abstract:
Disclosed is a separable fat scale including a body weight measuring part for detecting a body weight of a person under test who mounts a weighing platform; electrode parts having thereon at least a pair of electrodes to electrically contact soles of feet of the person under test and formed separately from the weighing platform; an impedance measuring part for measuring impedance of the person under test through his/her soles contacting the electrodes; an input part for inputting personal data including information about physical characteristics of the person under test such as sexuality, age and body height; an arithmetic part for calculating a proportion of body fat in the body of the person under test and/or weight of the body fat under impedance signals obtained from the impedance measuring part, load signals obtained from the body weight measuring part and the personal data input; and a data output part for outputting the calculated proportion of body fat in the body and/or weight of the body fat, wherein the electrode parts are separated into a right-foot-use electrode part and a left-foot-use electrode part to be separately arranged.
Abstract:
A lead frame for semiconductor device comprises first inner leads 21-2, 21-3 and 21-4 each having a region 22-2, 22-3, 22-4 on which a predetermined quantity of adhesive is applied, and second inner leads 21-1 and 21-5 each having a region 22-1, 22-5 which is wider than those of the first inner leads. The first inner leads 21-2, 21-3 and 21-4 have a width W.sub.1, while the second inner leads 21-1 and 21-5 have a width W.sub.2 which is wider than W1. The second inner leads 21-1 and 21-5 are arranged at the positions where one successive application of varnish-like adhesive to the inner leads begins and ends, respectively. The ratio of W.sub.1 to W.sub.2 is preferably 1 to 1.3 (i.e., W.sub.1 :W.sub.2 =1:1.3) or more. Even if an excessive quantity of varnish-like adhesive is applied to the beginning inner lead 21-1 or the ending inner lead 21-5, it is spread over the region 22-1 or 22-5, then adhesive layers having uniform thickness are formed.
Abstract:
A carrier phase synchronizing circuit is disclosed, that comprises an AFC loop and a PLL, the AFC loop including an AFC complex multiplexing device, an LPF, a PLL complex multiplying device, a phase detector, a loop filter, an AFC filter, and a NCO, the PLL including a PLL multiplying device, a phase detector, a PLL filter, and a NCO. A loop range, a frequency control width, and a control time interval of each of the AFC filter and the PLL filter are controlled corresponding to a time change amount of the frequency error that is detected in the PLL.
Abstract:
A method of manufacturing a double-sided circuit tape carrier comprising an insulating film like a polyimide tape, circuit wiring patterns on both sides thereof, and via holes through which at least a part of the circuit wiring patterns on both sides are electrically connected with each other. A copper thin film is patterned by photoetching. Via holes are formed through the insulating film by irradiating a laser beam by using the patterned copper thin film as a mask. Then, a conductive layer of a graphite conductive thin film and a copper plating layer is formed. The copper thin film is patterned by photoetching forming a chip hole and an outer lead hole through the insulating film by irradiating a laser beam. Finally, one of the copper thin films is patterned by photoetching to form circuit wiring pattern.
Abstract:
An outer lead of a metal lead frame is connected to an inner lead of a flexible lead-patterned substrate via a Au--Sn alloy layer. The Au--Sn alloy layer contains Au of 10 to 40 weight %. An inner lead of a metal lead frame is connected to a patterned lead of a flexible lead-patterned substrate by a heating tool. The inner lead is coated on bottom and side surfaces of its tip portion. The bottom surface faces the patterned lead.
Abstract:
An enzyme immunoassay for an antigen using a solid phase, which employs (a) a biotinylated antibody in which a biotin derivative is bound to a thiol group of an Fab' fragment of an antibody, (b) an enzyme-labelled antibody, and (c) a solid phase immobilized with a substance capable of specifically reacting with the above biotin derivative selected from the group consisting of avidin, streptoavidin and a derivative thereof which is bound to the solid phase directly or via a linkage between another biotin derivative and a high molecular weight substance bound to the solid phase, or alternatively employs (a') a solid phase immobilized with a biotinylated antibody via a substance selected from the group consisting of avidin, streptoavidin and a derivative thereof wherein said substance is bound to the biotin moiety of said biotinylated antibody and is also bound to the solid phase directly or via a linkage between another biotin derivative and a high molecular weight substance bound to the solid phase, and (b') an enzyme-labelled antibody, and a solid phase used therefor.