Abstract: Provided are an aluminum conductive member that includes an electrical connection portion excellent in conductivity and rust resistance and an electrical insulation portion excellent in long-term durability, chemical resistance, and the like, and can be manufactured at low cost, and a method of manufacturing the same. Specifically, provided are an aluminum conductive member, including: an aluminum conductive base material formed of an aluminum material including aluminum or an aluminum alloy; an electrical connection portion formed in a region of the aluminum conductive base material, the electrical connection portion having a surface coated with a conductive oxidation preventing film and being used as a terminal; and an electrical insulation portion formed in a region of the aluminum conductive base material other than the region in which the electrical connection portion is formed, the electrical insulation portion being coated with an anodic oxide film, and a method of manufacturing the same.

Abstract: Provided are an aluminum conductive member that includes an electrical connection portion excellent in conductivity and rust resistance and an electrical insulation portion excellent in long-term durability, chemical resistance, and the like, and can be manufactured at low cost, and a method of manufacturing the same. Specifically, provided are an aluminum conductive member, including: an aluminum conductive base material formed of an aluminum material including aluminum or an aluminum alloy; an electrical connection portion formed in a region of the aluminum conductive base material, the electrical connection portion having a surface coated with a conductive oxidation preventing film and being used as a terminal; and an electrical insulation portion formed in a region of the aluminum conductive base material other than the region in which the electrical connection portion is formed, the electrical insulation portion being coated with an anodic oxide film, and a method of manufacturing the same.

Abstract: Four input nodes I1-I4 for inputting 4-phase signals, four resistors R1-R4, four capacitors C1-C4, and four output nodes O1-O4 for outputting 4-phase signals are provided. The resistors and the capacitors are connected alternately in a loop, and the input nodes and output nodes are connected alternately to the respective nodes between the resistors and the capacitors sequentially. Each of the four resistors is composed of a group of three or more partial resistors, and three groups of the partial resistors R2a-R2c, R3a-R3c and R4a-R4c are collected respectively and arranged in the same attitude, while the partial resistors R1a-R1c of the remaining group are distributed into the other groups and arranged in the same line the same attitude as the partial resistors of each of the other groups. The regions of the thus collected groups are arranged in one direction.

Abstract: An intermediate-frequency signal from a frequency mixer is subjected to channel selection by a band-pass filter. Then an output signal from the band-pass filter is subjected to analog-to-digital conversion by an analog-to-digital converter on a predetermined sampling frequency. An anti-aliasing filter is provided at a stage previous to the analog-to-digital converter. The anti-aliasing filter includes notch filters and attenuates signals with frequencies which are higher and lower than a frequency which is an integral multiple of the sampling frequency by the intermediate frequency.

Abstract: The receiver IF system or the signal selection device of the present invention includes: frequency converters that obtain polyphase intermediate-frequency signals for suppressing an image component of an RF signal from an input signal; a polyphase filter for removing an image component from the polyphase intermediate-frequency signals; and a band-pass filter composed of an N-pass filter for selecting a channel of an intermediate-frequency signal that is obtained by removing an image component from an output of the polyphase filter. An image rejection filter and a channel selection filter can be integrated at low cost with higher performance, and an area of a substrate for reception can be reduced.

Abstract: Four input nodes I1-I4 for inputting 4-phase signals, four resistors R1-R4, four capacitors C1-C4, and four output nodes O1-O4 for outputting 4-phase signals are provided. The resistors and the capacitors are connected alternately in a loop, and the input nodes and output nodes are connected alternately to the respective nodes between the resistors and the capacitors sequentially. Each of the four resistors is composed of a group of three or more partial resistors, and three groups of the partial resistors R2a-R2c, R3a-R3c and R4a-R4c are collected respectively and arranged in the same attitude, while the partial resistors R1a-R1c of the remaining group are distributed into the other groups and arranged in the same line the same attitude as the partial resistors of each of the other groups. The regions of the thus collected groups are arranged in one direction.