首页> 外国专利> High dynamic range modulation independent formation hui - do huo - wa - do amplifier netsutowa - ku

High dynamic range modulation independent formation hui - do huo - wa - do amplifier netsutowa - ku

机译:奈米·兰格·莫祖亚·昂德·彭登·福特·曼奇·福·杜·福·哇·纳普图瓦库

摘要

Briefly described the present invention is a feed forward amplifier network (200) employing a frequency swept pilot tone signal (212) in order to reduce the distortion generated by the network's power amplifier (202). Initially a composite input signal (216) comprising either wide (520) and/or narrow (510) bandwidth modulation formats is input into the network (200). In addition, the frequency swept pilot tone (212), generated for example by a variable frequency oscillator (213), is injected into the input path of the power amplifier (202). Thereafter, distortion cancellation is employed to generate an amplified output signal (217) having output components (510, 520) which replicate those within the input signal (216). Thereafter, pilot tone power is detected (by 215) within the amplifier passband where the output components (510, 520) are absent, in order to ascertain the average pilot tone power remaining within the amplified output signal (217). In response to this detection, various amplifier network characteristics are adjusted (by 214, 208 and 209) in order to reduce the amount of pilot tone at the amplifier network output (217).
机译:简要地描述,本发明是一种前馈放大器网络(200),其采用扫频导频音信号(212),以便减少由网络功率放大器(202)产生的失真。最初,将包括宽带(520)和/或窄(510)带宽调制格式的复合输入信号(216)输入到网络(200)中。另外,例如由可变频率振荡器(213)产生的扫频导频音(212)被注入功率放大器(202)的输入路径。此后,采用失真消除来产生具有输出分量(510、520)的放大的输出信号(217),该输出分量复制输入信号(216)内的输出分量。此后,在不存在输出分量(510、520)的放大器通带内检测(由215)导频音功率,以便确定保留在放大的输出信号(217)内的平均导频音功率。响应于该检测,调整各种放大器网络特性(通过214、208和209),以便减少放大器网络输出(217)处的导频音量。

著录项

  • 公开/公告号JP2543824B2

    专利类型

  • 公开/公告日1996-10-16

    原文格式PDF

  • 申请/专利权人 MOTOROLA INC;

    申请/专利号JP19930516529

  • 申请日1993-01-27

  • 分类号H03F1/32;

  • 国家 JP

  • 入库时间 2022-08-22 03:59:45

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