NARROW-BAND STRIPLINE FILTERS WITH TRANSMISSION ZEROS AT FINITE FREQUENCIES

被引:1
作者
JOKELA, K
机构
[1] Institute of Radiation Protection, Helsinki, SF-00101
关键词
D O I
10.1002/cta.4490070409
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A design method is described to realize narrow‐band stripline or microstrip bandpass filters having one transmission zero near to the upper and lower bandedge. The filters utilize capacitively coupled open half‐wave TEM‐line resonators. Two nonadjacent resonators are also inductively coupled. No short circuits are needed. The design is based on the approximate or exact synthesis of the lowpass protoype presented by Levy. The transmission line parameters are obtained easily from the design formulae which have been derived using the susceptance (or reactance) slope parameter technique. The filter performance is good up to 12 per cent bandwidth. Measured results show good agreement with the theoretical ones. Copyright © 1979 John Wiley & Sons, Ltd.
引用
收藏
页码:445 / 461
页数:17
相关论文
共 18 条
[1]  
Horton M., Wenzel R., The digital elliptic filter—a compact sharp‐cutoff design for wide bandstop or bandpass requirements, IEEE Transactions on Microwave Theory and Techniques, 15 MTT, pp. 307-314, (1967)
[2]  
Levy R., Whiteley I., Synthesis of distributed elliptic‐function filters from lumped‐contant prototypes, IEEE Transactions on Microwave Theory and Techniques, 14 MTT, pp. 506-517, (1966)
[3]  
Porra V., Jokela K., The design of band‐pass filters made of multilayer striplines, (1974)
[4]  
Rhodes J., The stepped digital elliptic filter, IEEE Transactions on Microwave Theory and Techniques, 17 MTT, pp. 178-184, (1969)
[5]  
Rhodes J., The half‐wave stepped digital elliptic filter, IEEE Transactions on Microwave Theory and Techniques, 17 MMT, pp. 1102-1107, (1969)
[6]  
Reiter G., Hammer G., Stripline filter with coupled λ/8 line sections having attenuation poles near the passband, (1976)
[7]  
Levy R., Filters with single transmission zeros at real or imaginary frequencies, IEEE Trans. Microwave Theor. Tech., 24 MTT, pp. 172-181, (1976)
[8]  
Rhodes J., Theory of Electrical Filters, (1976)
[9]  
Rhodes J., The generalized interdigital linear phase filter, IEEE Transactions on Microwave Theory and Techniques, 18 MTT, pp. 301-307, (1970)
[10]  
Jokela K., Generalized interdigital filters made of multilayer striplines, Int. J. Cir. Theor. Appl., 6, pp. 327-343, (1978)