Design of High Performance Microstrip LPF with Analytical Transfer Function
-
Seyed Mohammad Hadi Mousavi
,
Saeed Raziani
Abstract
By exploiting butterfly and T-shaped resonators, a new design of microstrip lowpass filter (LPF) is proposed and analyzed. The LPF is investigated in four sections. Analyzing initial resonator and its equation in detail, providing a sharp skirt by using series configuration, suppressing in middle frequencies and suppressing in high frequencies are focused in each section, respectively. To present a theoretical design, LC equivalent circuit and transfer function are precisely calculated. The measured insertion loss of the LPF is less that 0.4 dB in frequency range from DC up to 1.25 GHz, and the return loss is better than 16 dB. A narrow transition band of 217 MHz and a roll-off rate of 170.5 dB /GHz are indicative of a sharp skirt. By utilizing T-shaped and modified T-shaped resonators in the third and fourth sections, respectively, a relative stopband bandwidth (RSB) of 166 % is obtained. Furthermore, the proposed LPF occupies a small circuit of
References
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Articles in the same Issue
- Frontmatter
- Laterally Placed CDRA with Triangular Notches for Ultra Wideband Applications
- Design Investigation of a Laminated Waveguide Fed Multi-Band DRA for Military Applications
- Design and Fabrication of High Gain Multi-element Multi-segment Quarter-sector Cylindrical Dielectric Resonator Antenna
- A Simple Ultra-Wideband Magneto-Electric Dipole Antenna With High Gain
- Design of Planar Leaky Wave Antenna Fed by Substrate Integrated Waveguide Horn
- Design of Ultra-Thin and Compact Metamaterial Monopolar Patch Antenna with Broad Bandwidth
- A Polarization Reconfigurable Slot Antenna with a Novel Switchable Feeding Network
- A Balanced Tri-band PD Based on Microstrip-slotline Transition Structure Embedded Complementary Split-ring Resonators
- Design of a Miniaturized X-Band Diplexer Based on Novel One-Third-Mode Substrate Integrated Resonator Filters
- Design of High Performance Microstrip LPF with Analytical Transfer Function
- UWB Filtering Power Divider with Two Narrow Notch-bands and Wide Stop-band
- A High Efficiency Optical Power Splitter in a Y-Branch Photonic Crystal for DWDM Optical Communication Systems
