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    • 5. 发明授权
    • Dual-band nonreversible circuit device comprising two nonreversible
circuit elements contained in a single housing to be operable in
different frequency bands
    • 双频带不可逆电路装置包括两个不可逆电路元件,其包含在单个壳体中以在不同频带中操作
    • US5898346A
    • 1999-04-27
    • US756035
    • 1996-11-26
    • Koji KameiAtsushi FurutaNorihiko OnoShigeyoshi YoshidaKenji Takamoro
    • Koji KameiAtsushi FurutaNorihiko OnoShigeyoshi YoshidaKenji Takamoro
    • H01P1/36H01P1/383H01P1/387H01P1/32
    • H01P1/387
    • A dual-band nonreversible circuit device comprises a first circulator element (91) and a second circulator element (92) accommodated in a single housing (50, 50', 60) and operable around a first center frequency (f.sub.A) and a second center frequency (f.sub.B), respectively. The first circulator element (91) is formed by a combination of a first permanent magnet (31), a first ferrite plate (21) with a first center conductor (11), and a ground conductor plate (40) successively stacked on a lower magnetic yoke (50). Likewise, the second circulator element (92) is formed by a combination of the ground conductor plate (40), a second ferrite plate (22) with a second center conductor (12), and a second permanent magnet (32) successively stacked and covered by an upper magnetic yoke (60). Alternatively, a first circulator element (91') is formed by a combination of a first ground conductor plate (41), the first ferrite plate (21) with the first center conductor (11), and a permanent magnet (30) while the second circulator element (92') is formed by a combination of a second ground conductor plate (42), the second ferrite plate (22) with the second center conductor (12), and the permanent magnet (30).
    • 双频带不可逆电路装置包括容纳在单个壳体(50,50',60)中的第一循环器元件(91)和第二循环器元件(92),并且围绕第一中心频率(fA)和第二中心 频率(fB)。 第一循环器元件(91)由第一永久磁铁(31),第一铁氧体板(21)与第一中心导体(11)的组合和接地导体板(40)组合而成, 磁轭(50)。 类似地,第二循环器元件(92)由接地导体板(40),具有第二中心导体(12)的第二铁氧体板(22)和依次层叠的第二永磁体(32)的组合形成, 被上磁轭(60)覆盖。 或者,第一循环器元件(91')由第一接地导体板(41),第一铁氧体板(21)与第一中心导体(11)和永磁体(30)的组合形成,同时 第二循环器元件(92')由第二接地导体板(42),第二铁氧体板(22)与第二中心导体(12)和永磁体(30)的组合形成。
    • 7. 发明申请
    • High speed amplifier with controllable amplification and output impedance and comparator using the same
    • 具有可控放大和输出阻抗的高速放大器和使用相同的比较器
    • US20070279130A1
    • 2007-12-06
    • US11783112
    • 2007-04-05
    • Atsushi Furuta
    • Atsushi Furuta
    • H03F3/45H03F1/00
    • H03F3/45475H03F3/45183H03F2200/54H03F2200/78H03F2203/45138H03F2203/45171H03F2203/45418H03F2203/45616H03F2203/45641H03F2203/45642H03F2203/45652H03F2203/45686
    • In an amplifier including first and second power supply terminals, first and second output terminals, a first load connected between the first power supply terminal and the first output terminal, a second load connected between the first power supply terminal and the second output terminal, a constant current source connected to the second power supply terminal, a first transistor connected between the first output terminal and the constant current source, a control terminal of the first transistor being adapted to receive an input voltage, and a second transistor connected between the second output terminal and the constant current source, a control terminal of the second transistor being adapted to receive a reference voltage, an amplification and output impedance switching circuit is connected between the first and second output terminals, so that the amplifier and output impedance switching circuit controls an amplification and output impedance of the amplifier in accordance with a control signal.
    • 在包括第一和第二电源端子的放大器中,第一和第二输出端子,连接在第一电源端子和第一输出端子之间的第一负载,连接在第一电源端子和第二输出端子之间的第二负载, 连接到第二电源端子的恒流源,连接在第一输出端子和恒流源之间的第一晶体管,第一晶体管的控制端子适于接收输入电压,第二晶体管连接在第二输出端 端子和恒流源,第二晶体管的控制端子适于接收参考电压,放大和输出阻抗切换电路连接在第一和第二输出端子之间,使得放大器和输出阻抗切换电路控制一个 放大器的放大和输出阻抗按照a 控制信号。
    • 8. 发明授权
    • High speed amplifier with controllable amplification and output impedance and comparator using the same
    • 具有可控放大和输出阻抗的高速放大器和使用相同的比较器
    • US07741908B2
    • 2010-06-22
    • US11783112
    • 2007-04-05
    • Atsushi Furuta
    • Atsushi Furuta
    • H03F3/45
    • H03F3/45475H03F3/45183H03F2200/54H03F2200/78H03F2203/45138H03F2203/45171H03F2203/45418H03F2203/45616H03F2203/45641H03F2203/45642H03F2203/45652H03F2203/45686
    • In an amplifier including first and second power supply terminals, first and second output terminals, a first load connected between the first power supply terminal and the first output terminal, a second load connected between the first power supply terminal and the second output terminal, a constant current source connected to the second power supply terminal, a first transistor connected between the first output terminal and the constant current source, a control terminal of the first transistor being adapted to receive an input voltage, and a second transistor connected between the second output terminal and the constant current source, a control terminal of the second transistor being adapted to receive a reference voltage, an amplification and output impedance switching circuit is connected between the first and second output terminals, so that the amplifier and output impedance switching circuit controls an amplification and output impedance of the amplifier in accordance with a control signal.
    • 在包括第一和第二电源端子的放大器中,第一和第二输出端子连接在第一电源端子和第一输出端子之间的第一负载,连接在第一电源端子和第二输出端子之间的第二负载, 连接到第二电源端子的恒流源,连接在第一输出端子和恒流源之间的第一晶体管,第一晶体管的控制端子适于接收输入电压,第二晶体管连接在第二输出端 端子和恒流源,第二晶体管的控制端子适于接收参考电压,放大和输出阻抗切换电路连接在第一和第二输出端子之间,使得放大器和输出阻抗切换电路控制一个 放大器的放大和输出阻抗按照a 控制信号。