TY - JOUR
T1 - Compact LTCC bandpass filter with wide stopband using discriminating coupling
AU - Zhang, Xiu Yin
AU - Dai, Xin
AU - Kao, Hsuan-Ling
AU - Wei, Bai-Hong
AU - Cai, Ze Yu
AU - Xue, Quan
PY - 2014/4
Y1 - 2014/4
N2 - This paper presents a novel compact low-temperature cofired ceramic (LTCC) bandpass filter (BPF) with wide stopband and high selectivity. The proposed circuit consists of two coupled \lambda-{g}/4 transmission-line resonators. A special coupling region is selected to realize a novel discriminating coupling scheme for generating a transmission zero (TZ) at the third harmonic frequency. The mechanism is analyzed and the design guideline is described. The source-load coupling is introduced to generate two TZs near the passband and one in the stopband. Thus, wide stopband can be obtained without extra circuits. Due to the LTCC multilayer structures, the filter size is 0.058~\lambda-{g}\times 0.058~\lambda-{g}\times 0.011~\lambdag, or 2.63 mm ×,2.61 mm ×,0.5 mm. The simulated and measured results of the demonstrated LTCC BPF are presented to validate the proposed design. © 2011-2012 IEEE.
AB - This paper presents a novel compact low-temperature cofired ceramic (LTCC) bandpass filter (BPF) with wide stopband and high selectivity. The proposed circuit consists of two coupled \lambda-{g}/4 transmission-line resonators. A special coupling region is selected to realize a novel discriminating coupling scheme for generating a transmission zero (TZ) at the third harmonic frequency. The mechanism is analyzed and the design guideline is described. The source-load coupling is introduced to generate two TZs near the passband and one in the stopband. Thus, wide stopband can be obtained without extra circuits. Due to the LTCC multilayer structures, the filter size is 0.058~\lambda-{g}\times 0.058~\lambda-{g}\times 0.011~\lambdag, or 2.63 mm ×,2.61 mm ×,0.5 mm. The simulated and measured results of the demonstrated LTCC BPF are presented to validate the proposed design. © 2011-2012 IEEE.
KW - Bandpass filter (BPF)
KW - discriminating coupling
KW - low-temperature cofired ceramic (LTCC)
KW - miniaturization
KW - source-load (S-L) coupling
KW - wide stopband
UR - http://www.scopus.com/inward/record.url?scp=84897575185&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84897575185&origin=recordpage
U2 - 10.1109/TCPMT.2013.2297522
DO - 10.1109/TCPMT.2013.2297522
M3 - RGC 21 - Publication in refereed journal
SN - 2156-3950
VL - 4
SP - 656
EP - 663
JO - IEEE Transactions on Components, Packaging and Manufacturing Technology
JF - IEEE Transactions on Components, Packaging and Manufacturing Technology
IS - 4
M1 - 6717183
ER -