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    • 5. 发明公开
    • 디지털 방식으로 조절 가능한 광대역의 집적 필터
    • 宽带多功能数字滤波器
    • KR1020060120593A
    • 2006-11-27
    • KR1020067003473
    • 2004-08-06
    • 맥심 인터그래이티드 프로덕츠 인코포레이티드
    • 와이트매튜글렌버크랜드조엘데이비드
    • H03H7/12
    • H03H7/0153H03H7/12H03H7/1783H03J1/0008H03J3/06H03J2200/10
    • A tunable receiver is disclosed including a plurality of select filters to perform an initial band selection, a variable-gain low noise amplifier (LNA) whose gain is controlled to prevent its output power level to exceed a pre-determined power threshold, a plurality of digitally-tunable tracking filters to pass signals within a selected channel and to reject signals in a corresponding image band, a second LNA to further amplify the received RF signal and to generate differential signal outputs, a down converting stage which converts the received FR signal to an IF signal while rejecting signals in the image band, an IF trap to further reject undesired signals present at the output of the down converting stage, an IF amplifier to amplify the IF signal to compensate for losses, an IF filter to provide channel select and reject undesirable signals, and a variable-gain IF amplifier to amplify the IF signal and maintain its power level within specification.
    • 公开了一种可调谐接收机,其包括执行初始频带选择的多个选择滤波器,其增益被控制以防止其输出功率电平超过预定功率阈值的可变增益低噪声放大器(LNA),多个 数字可调谐跟踪滤波器,以在所选择的信道内传递信号并拒绝相应图像频带中的信号,第二LNA进一步放大接收的RF信号并产生差分信号输出;下变频级,将接收的FR信号转换为 IF信号同时抑制图像频带中的信号,IF陷波器进一步消除存在于下变换级的输出端的不期望信号,IF放大器放大IF信号以补偿损耗,IF滤波器提供信道选择和 拒绝不期望的信号,以及可变增益IF放大器来放大IF信号并将其功率水平保持在规范内。
    • 10. 发明公开
    • 트랜스포머
    • 变压器
    • KR1020100048219A
    • 2010-05-11
    • KR1020080107272
    • 2008-10-30
    • 삼성전기주식회사
    • 김기중배효근남중진원준구송영진김윤석
    • H01F41/00
    • H03H7/42H03F3/211H03F3/45475H03F2200/537H03F2200/541H03H7/0115H03H7/1783H03H7/1791
    • PURPOSE: A transformer is provided to remove a harmonic component by including an additional resonance circuit. CONSTITUTION: Both ends of an input conductive channel(110) are input terminals of a positive signal and a negative signal. An output conductive channel(120) is electromagnetically combined to an input conductive channel. One end of the output conductive channel is connected to a ground. A first resonant part(130) is formed between the other end of the output conductive channel and the ground. The first resonant part reduces a third harmonic component of a signal outputted from the output conductive channel in a fixed frequency band. One end of the second resonant part(140) is connected to the other end of the output conductive channel. The other end of the second resonant part is an output terminal.
    • 目的:提供一个变压器,通过包括一个附加的谐振电路来去除谐波分量。 构成:输入导通通道(110)的两端是正信号和负信号的输入端。 输出导电通道(120)电磁耦合到输入导电通道。 输出导电通道的一端连接到地。 第一谐振部分(130)形成在输出导电沟道的另一端和地之间。 第一谐振部分减少在固定频带中从输出导通通道输出的信号的三次谐波分量。 第二谐振部分(140)的一端连接到输出导电通道的另一端。 第二谐振部分的另一端是输出端子。