The design of RF broad band-pass filter for low temperature co-fired ceramic technology

2010 ◽  
Author(s):  
Weiwei Ling ◽  
Huaiwu Zhang ◽  
Yunsong Xie ◽  
Yuanxun Li ◽  
Yingli Liu
Keyword(s):  
Low Temperature ◽  
Broad Band ◽  
Ceramic Technology ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

scholarly journals Multilayer End Coupled Band Pass Filter using Low-Temperature Co-Fired Ceramic Technology for Broadband Fixed Wireless

2018 ◽  
Vol 10 (3) ◽  
pp. 980
Author(s):  
Zulkifli Ambak ◽  
Hizamel M. Hizan ◽  
Ahmad Ismat Abdul Rahim ◽  
Azmi Ibrahim ◽  
Mohd Zulfadli M. Yusoff ◽  
...  
Keyword(s):  
Low Temperature ◽  
Design Method ◽  
Ceramic Technology ◽  
Center Frequency ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Three Samples ◽  
Band Pass ◽  
Fixed Wireless ◽  
Multilayer Substrate

This paper presents design approach for realizing multilayer End Coupled Bandpass Filter (ECBPF) using low temperature co-fired ceramic (LTCC) technology at TMRND's LTCC Lab. Design method for the ECBPF is based on the coupled-resonator filter which was realized in LTCC multilayer substrate and operating at the center frequency of 42GHz. Three samples of EC BPF have been designed, simulated, fabricated and investigated in terms of performance and structure size.This multilayer ECBPF were fabricated in the 8 layers LTCC Ferro A6S materials with dielectric constant of 5.8, loss tangent of 0.002 and metallization of gold. The measured insertion loss for ECBPF was 2.43dB and return loss was 22.81dB at the center frequency at 42GHz. The overall size of the fabricated filter was 6.0 mm x 2.5 mm x 0.77 mm.

scholarly journals Miniaturized 38GHz Circular Substrate Integrated Waveguide Band Pass Filter using Low Temperature Co-Fired Ceramic Technology

2018 ◽  
Vol 15 (2) ◽  
pp. 40-46
Author(s):  
Zulkifli Ambak ◽  
Hizamel M. Hizan ◽  
Ahmad Ismat Abdul Rahim ◽  
Azmi Ibrahim ◽  
Mohd Zulfadli M. Yusoff ◽  
...  
Keyword(s):  
Low Temperature ◽  
Ceramic Technology ◽  
Band Pass Filter ◽  
Substrate Integrated Waveguide ◽  
Pass Filter ◽  
Band Pass

Design of a compact broad band-pass filter using parallel coupled structure

2008 ◽  
Author(s):  
Ki-Cheol Yoon ◽  
Seung-Yeon Oh ◽  
Hyunwook Lee ◽  
Kyoung-Min Oh ◽  
Jong-Chul Lee
Keyword(s):  
Broad Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

The Wedged Transducer — A Transducer Design for Broad Band Characteristics

1979 ◽  
Vol 1 (1) ◽  
pp. 76-88 ◽  
Author(s):  
Gerard A. Alphonse
Keyword(s):  
Insertion Loss ◽  
Acoustic Impedance ◽  
Broad Band ◽  
Wedge Angle ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Reflected Wave ◽  
Actual Load ◽  
Transducer Design ◽  
Band Pass

This paper presents a method of increasing the bandwidth of transducers feeding low acoustic impedance loads such as fluids and of electrically matching them over the full bandwidth. It consists of interposing between the transducer and the actual load, a wedge made out of a material having the desired acoustic impedance. The wedge angle is chosen such that no reflected wave from the wedge-load interface can return to the transducer. In this manner, the effective load seen by the transducer is that of the wedge itself, regardless of the actual load. The appropriate electrical matching is achieved by means of a hybrid band pass filter containing both electrical and mechanical components, with the transducer as an integral part. Experimental results on a 4-inch diameter PZT-4 transducer, coupled to water through a brass wedge, demonstrate a bandwidth of 75 percent and an insertion loss of 8.5 dB, well in accordance with theory. Without the wedge, the bandwidth would be only 3.2 percent.

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