Article

Compact Substrate Integrated Waveguide Tunable Filter Based on Ferroelectric Ceramics

IEEE Microwave and Wireless Components Letters (impact factor: 1.72). 10/2011; DOI:10.1109/LMWC.2011.2162615 pp.477 - 479
Source: IEEE Xplore

ABSTRACT This letter presents the design and the realization of a compact tunable filter integrated in ferroelectric ceramic substrate. The bandpass filter bases on an evanescent-mode dielectric cavity, which is loaded by a pair of tunable mushroom-type complementary split-ring resonators. Tunable impedance matching networks are additionally implemented to improve passband insertion loss across the tuning range. A prototype has been realized in a 12.5 mm × 9.5 mm × 0.8 mm planar module. Measurements confirm a frequency coverage from 2.95 to 3.57 GHz, a 3 dB fractional bandwidth below 5.4%, with an insertion loss between 3.3 dB and 2.6 dB.

0 0
 · 
0 Bookmarks
 · 
38 Views
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.

Keywords

3 dB fractional bandwidth
 
bandpass filter bases
 
compact tunable filter
 
frequency coverage
 
insertion loss
 
Measurements
 
passband insertion loss
 
Tunable impedance
 
tunable mushroom-type complementary split-ring resonators
 
tuning range
 

Yuliang Zheng