Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
-
Jin Xu
,
Yan Zhu
Abstract
This paper presents a compact quad-band bandpass filter (QB-BPF) using double-diplexing structure, which consists of two channel filters and a pair of modified manifold-coupled lines. Each channel filter is realized by the asymmetrical coupling shorted stub loaded stepped-impedance resonator (SSLSIR) dual-band bandpass filter (DB-BPF), and the modified manifold line constructed by lumped elements is proposed to connect two channel filters to constitute the QB-BPF. The fabricated QB-BPF occupies a compact circuit size of 0.178λg × 0.219λg. Good agreement is shown between the simulated and measured results.
Funding statement: This work was supported in part by the National Natural Science Foundation of China under Grant 61401358, the State Key Laboratory of Millimeter Waves open research program under Grant K201614, the Fundamental Research Funds for Central Universities under Grant No.30920140122005, and the Young Talent Fund of University Association for Science and Technology in Shaanxi under Grant 20160202.
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Articles in the same Issue
- Frontmatter
- Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
- Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
- Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
- A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
- A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
- Fractal Based Triple Band High Gain Monopole Antenna
- Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
- A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
- Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
- A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
- A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
- A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
- Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
- Overview of Sparse Graph for Multiple Access in Future Mobile Networks
- The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
- The DLR Spaceborne SAR Calibration Center
- Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron
Articles in the same Issue
- Frontmatter
- Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
- Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
- Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
- A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
- A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
- Fractal Based Triple Band High Gain Monopole Antenna
- Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
- A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
- Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
- A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
- A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
- A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
- Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
- Overview of Sparse Graph for Multiple Access in Future Mobile Networks
- The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
- The DLR Spaceborne SAR Calibration Center
- Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron
