Sony Corporation

Katsuki Hirabayashi

Masayuki Tanaka

Nobuhito Ebine

Kazuhiko Nakase

Tadashi Imai

Takayuki Kaida

Kunihiko Morozumi

Koutarou Kojima

Kuniaki Hirahaya

A reception device includes a first input terminal receiving a first television broadcast signal of a first frequency band or a mixed wave of the first television broadcast signal and a second television broadcast signal of a second frequency band; a second input terminal receiving the second television broadcast signal; first and second tuner; a matching unit extracting a second broadcast signal from a broadcast signal received from a first circuit terminal and outputting the extracted second broadcast signal from a second circuit terminal; a first connection portion selectively performing a connection between the first input terminal and the first circuit terminal of the matching unit; and a second connection portion setting an input path of the second television broadcast signal to the second tuner to a path from the second input terminal or a path from the second circuit terminal of the matching unit.

Reception device

A built-in antenna applied to sending and reception of radio waves of a few giga cycles is improved and made smaller, and is made suitable for industrial production and has its tuning bandwidth widened. &ldquo;An antenna pattern ( ) which resonates at &lgr;/4&rdquo; is formed on a substrate ( ) and a zigzag portion ( ) is provided on a portion of the antenna pattern ( ) which resonates at &lgr;/4. On the other hand, the substrate ( ) and a bobbin ( ) are supported by a metallic frame ( ), and &ldquo;a helical coil ( ) which resonates at &lgr;/4&rdquo; is wound and formed upon the bobbin ( ). Capacitance (c) is provided between the antenna pattern ( ) which resonates at &lgr;/4 and the helical coil ( ) to electrically couple them.

Low profile small antenna and constructing method therefor

A reception signal of a horizontally polarized wave and a reception signal of a vertically polarized wave from one satellite are amplified by a first pair of low noise amplifiers, and a reception signal of a horizontally polarized wave and a reception signal of a vertically polarized wave from another satellite are amplified by a second pair of low noise amplifiers. One of the low noise amplifiers is selected in accordance with the polarized wave and the satellite, and the signal from the selected low noise amplifier is supplied to a further low noise amplifier through a coupling circuit. The coupling circuit includes extending portions extended in strip conductor shapes from the first pair of low noise amplifiers and an extending element extended in a strip conductor shape from an input of the next stage low noise amplifier. The extending portions and the extended element are arranged so as to closely face each other.

Low noise converting apparatus

Growing community of inventors

Tokyo, Japan

Katsuki Hirabayashi