公开(公告)号：EP2740213A1

公开(公告)日：2014-06-11

申请号：EP12743933.9

申请日：2012-07-17

Applicant: Ericsson Modems SA

Inventor： SJÖLAND, Henrik ,  LINDSTRAND, Jonas ,  BRYANT, Carl

IPC: H03F3/24 ,  H03F3/217 ,  H03F3/45 ,  H03F1/52 ,  H03F1/56

CPC classification number: H03F1/523 ,  H03F1/565 ,  H03F3/2171 ,  H03F3/245 ,  H03F3/45188 ,  H03F2200/387 ,  H03F2200/391 ,  H03F2203/45318 ,  H03F2203/45332 ,  H03F2203/45396 ,  H03F2203/45631 ,  H03F2203/45638 ,  H03H7/38

Abstract: A matching unit (200) configured to match a load of an amplifier circuit to an external circuit. The matching unit (200) comprises a first reactance configured to generate a first positive reactance at low frequencies and a second positive reactance at high frequencies. A second reactance unit comprises at least one series capacitor (C s ) and at least one series inductor (L s ) serially coupled between a resistor (R L ) and the first and second outputs of the amplifier. The second reactance unit is configured to generate a negative reactance at low frequencies and a third positive reactance at high frequencies; and a third reactance unit configured to generate a short at high frequencies so as to reduce a parasitic capacitance at the first and second outputs of the amplifier at high frequencies, wherein said first, second, and third reactance units are configured to operate together to provide a generally constant impedance across a wideband frequency range.

Abstract translation: 配置单元（200），被配置为将放大器电路的负载与外部电路相匹配。 匹配单元（200）包括被配置为在低频率处产生第一正电抗的第一电抗和在高频处产生第二正电抗。 第二电抗单元包括至少一个串联电容器（C s）和串联耦合在电阻器（R L）与放大器的第一和第二输出端之间的至少一个串联电感器（L s）。 第二电抗单元被配置为在低频处产生负电抗，并在高频下产生第三正电抗; 以及第三电抗单元，其被配置为在高频下产生短路，以便降低放大器在高频下的第一和第二输出端的寄生电容，其中所述第一，第二和第三电抗单元被配置为一起操作以提供 在宽带频率范围内通常是恒定的阻抗。