A Triple-band Bandpass Filter using Tri-section Step-impedance and Capacitively Loaded Step-impedance Resonators for GSM, WiMAX, and WLAN systems
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Abstract
This paper presents a triple-band bandpass filter for applications of GSM, WiMAX, and WLAN systems. The proposed filter comprises of the tri-section step-impedance and capacitively loaded step-impedance resonators, which are combined using the cross coupling technique. Additionally, tapered lines are used to connect at both ports of the filter in order to enhance matching for the tri-band resonant frequencies. The filter can operate at the resonant frequencies of 1.8 GHz, 3.7 GHz, and 5.5 GHz. At resonant frequencies, the measured values of S11 are −17.2 dB, −33.6 dB, and −17.9 dB, while the measured values of S21 are −2.23 dB, −2.98 dB, and −3.31 dB, respectively. Moreover, the presented filter has compact size compared with the conventional open-loop cross coupling triple band bandpass filters
©2014 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Frontmatter
- Design of Cavity-Backed Wideband Circularly Polarized Multi-Feed Slot Antenna and its Array
- Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure
- Novel Dual-band Slot Antenna Design for Bluetooth and UWB Applications
- A Triple-band Bandpass Filter using Tri-section Step-impedance and Capacitively Loaded Step-impedance Resonators for GSM, WiMAX, and WLAN systems
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- Simulation Model for DVB-SH Systems Based on OFDM for Analyzing Quasi-error-free Communication over Different Channel Models
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- Performance Analysis of Two-Way OFDM Relay Systems with Ordered Subcarrier Pairing
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Articles in the same Issue
- Frontmatter
- Design of Cavity-Backed Wideband Circularly Polarized Multi-Feed Slot Antenna and its Array
- Dual Polarized Notch-etched Circular Patch Antenna Loaded with Metamaterial Structure
- Novel Dual-band Slot Antenna Design for Bluetooth and UWB Applications
- A Triple-band Bandpass Filter using Tri-section Step-impedance and Capacitively Loaded Step-impedance Resonators for GSM, WiMAX, and WLAN systems
- A Differential CMOS Common-Gate LNA Linearized by Cross-Coupled Post Distortion Technique
- A Wideband Noise-canceling CMOS LNA Using Cross-coupled Feedback and Bulk Effect
- Simulation Model for DVB-SH Systems Based on OFDM for Analyzing Quasi-error-free Communication over Different Channel Models
- Resource Allocation with Dynamic Carrier Assignment in Wireless Networks
- Performance Analysis of Two-Way OFDM Relay Systems with Ordered Subcarrier Pairing
- Stackelberg Game Based Power Allocation for Physical Layer Security of Device-to-device Communication Underlaying Cellular Networks
