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    • 52. 发明公开
    • 평면 변압기
    • 平面变压器
    • KR1020110133456A
    • 2011-12-12
    • KR1020110097039
    • 2011-09-26
    • 엘지이노텍 주식회사전주대학교 산학협력단
    • 김은수정봉근
    • H01F27/28H01F27/30
    • H01F27/263H01F27/2847H01F38/08H01F2038/026
    • PURPOSE: A planar transformer is provided to control leakage inductance by securing and adjusting an area in which a primary coil and a secondary coil are not interlinked and to sufficiently secure the leakage inductance without using a leakage inductor. CONSTITUTION: A primary coil(1211) is arranged on bottom secondary coils(1311,1312). A primary coil is arranged while surrounding the first left direction projection(1132) and the first right direction projection of a first plane core(1100). A plurality of coils is separated and laminated on top secondary coils(1313,1314). The top secondary coil is arranged while surrounding the first left direction projection of the first plane core. A second plane core(1400) is arranged in the top secondary coil. The second plane core comprises a second right direction projection which is separated in a second left direction projection(1432).
    • 目的:提供平面变压器,通过固定和调整初级线圈和次级线圈不互连的区域来控制漏电感,并充分确保漏电感而不使用漏电感。 构成:初级线圈(1211)布置在底部次级线圈(1311,1312)上。 初级线圈被布置成围绕第一平面芯(1100)的第一左方向投影(1132)和第一右方向投影。 多个线圈被分离并层叠在顶部次级线圈(1313,1314)上。 顶部次级线圈围绕第一平面芯的第一左方向投影而布置。 第二平面芯(1400)布置在顶级次级线圈中。 第二平面芯包括在第二左方向投影(1432)上分离的第二右方向投影。
    • 53. 发明公开
    • 고주파 변압기 및 그를 이용한 전력 증폭기
    • 高频变压器和功率放大器
    • KR1020110058053A
    • 2011-06-01
    • KR1020090114709
    • 2009-11-25
    • 한국전자통신연구원
    • 황택진이광천
    • H03F1/02H03F3/68
    • H03F1/565H01F27/2847H03F3/602H03F2200/541
    • PURPOSE: A high frequency transformer and a power amplifier using the same are provided to ensure a wide band operating region in a high frequency region by controlling a load resistance/impedance. CONSTITUTION: A plurality of primary side coils(300) comprise the first primary side coils(310,315), and the second primary side coils(320,325) and the secondary side coil(350). The first primary side coil and the second primary side coil have a winding ratio different from that of the secondary side coil. A high frequency transformer has different impedance conversion ratios in one transformer. The high frequency transformer changes a load resistance/impedance value of the power amplifier by having the different impedance conversion ratio. The operating region of the power amplifier is extended by converting the load resistance/impedance value.
    • 目的:提供高频变压器和使用该变压器的功率放大器,以通过控制负载电阻/阻抗来确保高频区域的宽带工作区域。 构成:多个初级侧线圈(300)包括第一初级侧线圈(310,315)和第二初级侧线圈(320,325)和次级侧线圈(350)。 第一初级侧线圈和第二初级侧线圈的绕组比与次级侧线圈的绕组比不同。 高频变压器在一个变压器中具有不同的阻抗转换比。 高频变压器通过具有不同的阻抗转换比来改变功率放大器的负载电阻/阻抗值。 通过转换负载电阻/阻抗值来扩展功率放大器的工作区域。