无线电工程
無線電工程
무선전공정
RADIO ENGINEERING OF CHINA
2012年
7期
44-45,58
,共3页
预选器%变容二极管%可调滤波器%微带线
預選器%變容二極管%可調濾波器%微帶線
예선기%변용이겁관%가조려파기%미대선
preselector%varaetor diode%tunable filter%microstrip
电调谐预选器是现代无线电监测接收机中的关键部件,在射频前端加入窄带预选器可以改善系统的二阶输入截点,提高系统的抗阻塞干扰能力。介绍了基于微带梳状线可变电容加载型电调谐带通滤波器的设计,分析了其理论设计原理,利用ADS软件对该电调滤波器进行了电路电磁相结合的协同仿真。通过实测,该滤波器可调覆盖范围1.5～2.1 GHz,通带插损小于4 dB。对该滤波器的下一步性能改进做了讨论。
電調諧預選器是現代無線電鑑測接收機中的關鍵部件,在射頻前耑加入窄帶預選器可以改善繫統的二階輸入截點,提高繫統的抗阻塞榦擾能力。介紹瞭基于微帶梳狀線可變電容加載型電調諧帶通濾波器的設計,分析瞭其理論設計原理,利用ADS軟件對該電調濾波器進行瞭電路電磁相結閤的協同倣真。通過實測,該濾波器可調覆蓋範圍1.5～2.1 GHz,通帶插損小于4 dB。對該濾波器的下一步性能改進做瞭討論。
전조해예선기시현대무선전감측접수궤중적관건부건,재사빈전단가입착대예선기가이개선계통적이계수입절점,제고계통적항조새간우능력。개소료기우미대소상선가변전용가재형전조해대통려파기적설계,분석료기이론설계원리,이용ADS연건대해전조려파기진행료전로전자상결합적협동방진。통과실측,해려파기가조복개범위1.5～2.1 GHz,통대삽손소우4 dB。대해려파기적하일보성능개진주료토론。
Electrically tunable preselectors are key elements in modern radio monitoring receivers. Adding a narrowband preselector in the RF front end may improve the IIP2 as well as the anti - jamming capability of the system. The paper introduces the design of electronically tunable bandpass filter based on mierostrip combline resonator loaded with variable capacitors, and analyzes the theoretical principles of the resonator. The co-simulation based on circuit and EM analysis is accomplished by ADS. The test result shows that the filter has a tuning range from 1.5 GHz to 2. 1 GHz with a low insertion loss （ less than 4 dB across the entire tuning range）. Finally, the paper discusses how to further improve the performance of the filter.
