CAJ | 학술논문

在无线无源互感耦合传感检测系统中，需要通过检测远端敏感单元的谐振频率来读取传感器的谐振信息。因此，设计一个高精度的宽带线性扫频源来满足测试系统实现稳定和精准的测试。为了解决这个问题，设计了一种基于DDS技术的高带宽线性扫频源，带宽为1～100 MHz，频率精度为0.116 Hz，最小扫频步进值为0.233 Hz，驱动能力为6 dBm。 MATLAB仿真分析了线性扫频源的扫频步进值不同时对LC谐振传感器检测精度的影响。并通过实验验证了该线性扫频源在互感耦合谐振器频率读取系统中的可靠性和稳定性。
재무선무원호감우합전감검측계통중，수요통과검측원단민감단원적해진빈솔래독취전감기적해진신식。인차，설계일개고정도적관대선성소빈원래만족측시계통실현은정화정준적측시。위료해결저개문제，설계료일충기우DDS기술적고대관선성소빈원，대관위1～100 MHz，빈솔정도위0.116 Hz，최소소빈보진치위0.233 Hz，구동능력위6 dBm。 MATLAB방진분석료선성소빈원적소빈보진치불동시대LC해진전감기검측정도적영향。병통과실험험증료해선성소빈원재호감우합해진기빈솔독취계통중적가고성화은정성。
In the wireless passive mutual inductance coupling sensing detection system ,it needs to detect the resonance fre-quency of the remote sensing element to read sensor resonance information .Therefore,to design a high precision broadband linear sweep frequency source is to satisfy test system that achieve stable and accurate test .In order to solve this problem ,a high band-width based on DDS technology of linear sweep source was designed .Its bandwidth is 1~100 MHz,its frequency accuracy is 0.116 Hz,the minimum sweep frequency step value is 0.233 Hz,and its driving ability is 6 dBm.MATLAB simulation analyzes the influ-ence of LC resonant sensor detection precision when it is different sweep frequency step values of linear sweep frequency source . And the linear sweep frequency source is verified by experiment that is reliability and stable in the mutual inductance coupling re -sonator frequency readout system .