自动化仪表
自動化儀錶
자동화의표
PROCESS AUTOMATION INSTRUMENTATION
2014年
10期
80-83,86
,共5页
无线通信%功率驻波表%中长波%小信号%峰值检波
無線通信%功率駐波錶%中長波%小信號%峰值檢波
무선통신%공솔주파표%중장파%소신호%봉치검파
Wireless communication%Power standing wave meter%Medium and long wave%Small signal%Peak value detection
针对用于中长波测量的功率驻波表较少，且一般的驻波表对小信号检测的准确度低等一系列问题，设计了一个用于中长波小信号测量的功率驻波表。该表通过运用串联匹配定向耦合电路、反馈式峰值检波电路及信号运算电路，使得工作频率降低，并大大提高了小信号检测的准确性。经过测试表明，该表准确度高，操作简单，效果甚佳。
針對用于中長波測量的功率駐波錶較少，且一般的駐波錶對小信號檢測的準確度低等一繫列問題，設計瞭一箇用于中長波小信號測量的功率駐波錶。該錶通過運用串聯匹配定嚮耦閤電路、反饋式峰值檢波電路及信號運算電路，使得工作頻率降低，併大大提高瞭小信號檢測的準確性。經過測試錶明，該錶準確度高，操作簡單，效果甚佳。
침대용우중장파측량적공솔주파표교소，차일반적주파표대소신호검측적준학도저등일계렬문제，설계료일개용우중장파소신호측량적공솔주파표。해표통과운용천련필배정향우합전로、반궤식봉치검파전로급신호운산전로，사득공작빈솔강저，병대대제고료소신호검측적준학성。경과측시표명，해표준학도고，조작간단，효과심가。
There are rare power standing wave meters can be used for medium and long wave measurement, and the general standing wave meters offer low accuracy in detection of small signals, thus the power standing wave meter suitable for measurement of medium and long wave small signals has been designed. By adopting tandem matching directional coupling circuit, feedback type peak value detecting circuit and signal operation circuit, the operating frequency becomes lower and the accuracy for small signal detection is greatly increased. The tests indicate that the meter is precise, easy to operate and with excellent effects.
