论文信息 - LTCC Balun Bandpass Filters Using Dual-Response Resonators

LTCC Balun Bandpass Filters Using Dual-Response Resonators

The design of compact balanced-to-unbalanced (balun) bandpass filters (BPFs) in the low temperature co-fired ceramic (LTCC) technology is presented. By incorporating the proposed dual-response resonators, an LTCC balun filter with desired bandpass response in differential mode and bandstop response in common mode is obtained. To further improve the out-band suppression response of the filter, another LTCC balun BPF with two controllable transmission zeros is described. Both balun BPFs are practically implemented showing the desired filtering performance with good amplitude and phase imbalances, which are less than 0.05 dB/0.26 dB and 1.9°/2.3° in the passbands, respectively.

[1] Tao Yang,et al. Compact Hybrid Resonator With Series and Shunt Resonances Used in Miniaturized Filters and Balun Filters , 2010, IEEE Transactions on Microwave Theory and Techniques.

[2] Wai-Wa Choi,et al. A Compact Microstrip Square-Loop Dual-Mode Balun-Bandpass Filter With Simultaneous Spurious Response Suppression and Differential Performance Improvement , 2011, IEEE Microwave and Wireless Components Letters.

[3] K.-K.M. Cheng,et al. Multilayer LTCC bandpass filter design with enhanced stopband characteristics , 2002, IEEE Microwave and Wireless Components Letters.

[4] Shih-Yuan Chen,et al. Balanced-to-Unbalanced Bandpass Filters and the Antenna Application , 2008, IEEE Transactions on Microwave Theory and Techniques.

[5] Jr. R. Wyndrum. Microwave filters, impedance-matching networks, and coupling structures , 1965 .

[6] E. M. Jones,et al. Microwave Filters, Impedance-Matching Networks, and Coupling Structures , 1980 .

[7] Eul-Young Jung,et al. A Balun-BPF Using a Dual Mode Ring Resonator , 2007, IEEE Microwave and Wireless Components Letters.