Compact 'butterfly' microwave ultra-wideband filter

• Main Authors: Razalli, Mohammad Shahrazel, Ismail, Alyani, Mahdi, Mohd Adzir, Hamidon, Mohd Nizar
• Format: Conference or Workshop Item
• Language: English
• Published: IEEE 2007
• Online Access: http://psasir.upm.edu.my/id/eprint/48218/1/Compact%20%27butterfly%27%20microwave%20ultra-wideband%20filter.pdf; http://psasir.upm.edu.my/id/eprint/48218/
• Institution: Universiti Putra Malaysia

In this paper, a compact 5 poles Ultra-Wideband (UWB) microwave filter is designed by using a quarter wave short-circuited stubs. The UWB filter bandwidth is covered from 2.75 GHz to 10.0 GHz. This filter designed is developed from a Low Pass Chebychev prototype with a 0.1 dB passband ripple. The first pattern layout uses 5 vias connecting to the ground. This pattern layout is then re-arranged to reduce the total area space needed on microstrip by maintaining the optimum filter response. Finally, a compact microwave filter with 21 mm X 16.1 mm dimension is presented here with excellent scattering characteristic results.