𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Using high permittivity ceramic substrates to design a bandpass filter with open stub

✍ Scribed by Cheng-Liang Huang; Jun-Jie Wang; Yu-Pin Chang

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
205 KB
Volume
49
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

The advantage of using high permittivity ceramic substrates is to miniaturize the sizes of microstrip bandpass filters. The selectivity and stopband rejection of the designed filters can be improved significantly by utilizing open stubs. The designed filter with appropriate open stub can create tunable transmission zero. These factors will reduce the size of the filter and increase its performance. The responses of the filters using Al 2 O 3 ( r ϭ 9.8, tan␦ ϭ 0.0001) and 0.96(Mg 0.95 Zn 0.05 ) TiO 3 -0.04SrTiO 3 ( r ϭ 20.7, tan␦ ϭ 0.00007) ceramic substrates are designed at a center frequency of 2.45 GHz. Finally, the open stub and high permittivity ceramic substrates are applied to the design of a direct-coupled hairpin filter. The compact size, low-loss, sharp response, and performance of the filter are presented in this article.

📜 SIMILAR VOLUMES

Using high permittivity ceramic substrat
Using high permittivity ceramic substrates to fabricate a miniaturized bandpass filter with capacitive load
✍ Cheng-Liang Huang; Jun-Jie Wang; Po-Hsin Li 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 286 KB

## Abstract Using high permittivity ceramic substrates and capacitive coupling to miniaturize the sizes of Butterworth bandpass filters are investigated. The selectivity and stopband rejection of the designed filters can be improved significantly by utilizing a skew‐symmetric (zero degree) feed str

Design and fabrication of a miniature mo
Design and fabrication of a miniature monoblock bandpass filter using high-permittivity ceramic
✍ Min-Hung Weng; Tsorng-Juu Liang; Cheng-Liang Huang 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 105 KB

## Abstract A miniature monoblock bandpass filter with combline‐type, quarter‐wavelength, and capacitive coupling is investigated. The coupling analysis and equivalent circuit consist of the transmission lines, and lumped elements are presented to predict the filter performance. A filter design tec

A hairpin line wideband bandpass filter
A hairpin line wideband bandpass filter design with embedded open stubs
✍ Cheng-Yuan Hung; Min-Hang Weng; Yan-Kuin Su; Ru-Yuan Yang 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 177 KB

## Abstract In this paper, a compact three‐poles hairpin line wideband bandpass filter with several embedded open stubs to improve the stopband is designed and implemented on print circuit board substrate. This filter at center frequency f~0~ of 4.25 GHz has presented almost very good measured char

New compact microstrip stacked slotted r
New compact microstrip stacked slotted resonators bandpass filter with transmission zeros using high-permittivity ceramics substrate
✍ Cheng-Liang Huang; Yuan-Bin Chen; Chia-Feng Tasi 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 175 KB

## Abstract The miniaturization of hairpin band‐pass filters by employing two high‐permittivity ceramic substrates (with respective dielectric constants of 9.7 and 26.1) are investigated. Microwave dielectric ceramics with high permittivity are commonly applied in several microwave communication co

A novel compact microstrip bandpass filt
A novel compact microstrip bandpass filter using an open-loop resonator with radial stub
✍ Jian-Xin Chen; Jun Xu; Quan Xue 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 108 KB

GHz. For this reason, the spacing t was selected to be 1.0 mm for the prototype constructed here. The radiation characteristics of the constructed prototype were also studied. Figures 7 and8 plot the measured radiation patterns at the center frequencies (2442 and 5500 MHz) for the 2.4-GHz and 5.2/5

Quasi-elliptic function filters with a d
Quasi-elliptic function filters with a dual-passband response with high-permittivity ceramics substrate
✍ Cheng-Liang Huang; Yuan-Bin Chen; Meng-Lin Lee 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 202 KB

## Abstract The miniaturization of dual‐passband filters by employing two high‐permittivity ceramic substrates (with respective dielectric constants of 4.5 and 20.8) are investigated. Microwave dielectric ceramics with high permittivity are commonly applied in several microwave communication compon