| Patent Number |
Title Of Patent |
Date Issued |
| 7049371 |
Material for an insulating film, coating varnish for an insulating film, and insulating film and |
May 23, 2006 |
| A material for an insulating film which comprises a copolymer obtained by reacting a polyamide having a specific structure and a reactive oligomer as a component forming the film; a coating varnish for an insulating film which comprises this material and an organic solvent; an insulating |
| 6949674 |
Aromatic carboxylic acids, acid halides thereof and processes for preparing both |
September 27, 2005 |
| A novel aromatic carboxylic acid useful as a material for macromolecular compounds and, in particular, for polycondensed macromolecular compounds exhibiting excellent heat resistance, an acid halide derivative thereof and a process for producing these compounds are disclosed. The aromati |
| 6410677 |
Resin composition for insulating material, and insulating material produced from said resin comp |
June 25, 2002 |
| The present invention provides an insulating material showing excellent thermal propeties and electrical properties in semiconductor applications. That is, the present invention provides: a resin composition for insulating material, comprising, as essential components: (A) a compound |
| 6380271 |
Material for electrical insulating organic film, electrical insulating organic film and process |
April 30, 2002 |
| The present invention provides a material for electrical insulating organic film, superior in electrical properties, thermal properties and low water absorption; an electrical insulating organic film made from the material; and a process for production of the film. That is, the present i |
| 6337668 |
Antenna apparatus |
January 8, 2002 |
| The antenna apparatus of the present invention places antenna element 302 that transmits or receives electromagnetic waves on basic plate 301, places parasitic antenna elements 303 to 306 on basic plate 301 evenly spaced concentrically centered on antenna element 302, places switch e |
| 6239656 |
Power amplifier |
May 29, 2001 |
| The present invention is a microwave power amplifier using a balanced amplifier. The present invention uses one output port of a hybrid power combiner as a port to detect distortion of the amplifier circuit. To eliminate noise superimposed over a normal signal, the detected distortion |
| 6130897 |
Time division multiple access FDD/TDD dual mode radio and a time division multiple access TDD du |
October 10, 2000 |
| A Time Division Multiple Access FDD/TDD dual mode system includes a switch having first and second common terminals and first and second terminals. Also included are a TDD demodulation circuit for demodulating a TDD received signal from the first common terminal; a FDD demodulation circu |
| 6114911 |
Power amplifier |
September 5, 2000 |
| A power amplifier has an input signal splitting part for splitting the input signal into two output signals each having equal power and phase difference of 180 degrees with respect to each other. A first signal on-off selection part for switching conduction of one of the output signa |
| 6014571 |
Multiband mobile unit communication apparatus |
January 11, 2000 |
| A multiband mobile unit communication apparatus comprises: antennas for receiving plural radio wave SIGs respectively transmitted from plural mobile unit communication systems, the plurality of radio wave SIGs having different carrier frequencies respectively; independent CKTs for ge |
| 6006080 |
Receiving mixer circuit for mobile radio transceiver designed to operate with multiple modulatio |
December 21, 1999 |
| A receiving mixer device for a mobile radio transceiver which operates with multiple modulation modes and within multiple frequency bands. The receiving mixer includes a plurality of mixers each for converting a received radio frequency signal to an intermediate frequency, a common c |
| 5973557 |
High efficiency linear power amplifier of plural frequency bands and high efficiency power ampli |
October 26, 1999 |
| The invention presents a high efficiency linear power amplifier of plural frequency bands reduced in the number of parts and elements, simplified in the circuit construction, and saved in the circuit space, and in FIG. 1, signals entering from a common input terminal 1 in frequency bands |
| 5913153 |
Mobile station without a transmission/reception duplexer |
June 15, 1999 |
| A mobile station has a transmission/reception antenna, a reception antenna, external connector terminals, and transmitter and receiver circuits. Only the switch circuit, which includes a plurality of switch elements, is interposed between the antennas and external connector terminals, an |
| 5835853 |
Two band receiver |
November 10, 1998 |
| A receiver comprises; an input TERM (11) for receiving a radio wave signal including at least one of 1st and 2nd radio wave components from an antenna; a 1st SW (12); a 1st BPF (13) for extracting the 1st radio wave component; a 2nd BPF (14) for extracting the 2nd radio wave component; a |
| 5794134 |
Receiving circuit for a portable telephone set |
August 11, 1998 |
| An unnecessary wave suppressing means suppresses unnecessary waves included in a reception high frequency signal in a frequency band that is changed in accordance with a switching signal. The unnecessary wave suppressing means changes the pass band by inserting a notch into a pass band a |
| 5659893 |
Transmission circuit with improved gain control loop |
August 19, 1997 |
| In a transmission circuit, part of the output signal of the transmission circuit is diverted by an output monitor circuit and subjected to envelope detection by an output detector circuit. The output signal of the output detector circuit is inputted to a peak hold circuit successively ho |
| 5369789 |
Burst signal transmitter |
November 29, 1994 |
| A power amplifier amplifies a modulated carrier signal having an amplitude modulation component and a phase modulation component to generate a transmission signal. Part of the transmission signal is extracted by a monitor circuit. The detection signal detected by an envelope detector is |
