A miniaturized net-type microstrip bandpass filter using lamda/8 resonators
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
15
Journal Issue
7
Pages
481-483
Date Issued
2005-07
Author(s)
Abstract
A novel miniaturized three-pole net-type bandpass filter using λ/8 resonators has been proposed. Asymmetric frequency characteristics of this filter exhibit a single transmission zero on the lower side of the passband at finite frequency, which is attributed to multi-path effect. Full-wave simulator IE3D is used to extract the coupling coefficients and external quality factor in order to determine the physical dimensions of this filter. The measured results are in good agreement with the simulated predictions. The overall size of the filter is only about 0.22λg by 0.2 λg. As a result, the filter has not only a small size but also a wider upper stopband up to 6.5 f0. © 2005 IEEE.
Type
journal article