Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
-
Feng Wei
,
Xin Yi Wang
Abstract
A tunable balanced bandpass filter (BPF) with a good common-mode (CM) suppression based on slotline resonators is proposed in this letter. Two novel stub-loaded slotline resonators (SLSRs) terminated with varactors are designed to obtain tunable differential-mode (DM) responses. It is found that a high and wideband CM suppression can be achieved by employing balanced stepped-impedance microstrip-slotline transition structures. Moreover, the DM passbands are independent from the CM ones, which can significantly simplify the design procedure. To validate the design theory, a compact tunable balanced BPF with an operating frequency band ranging from 3.09 GHz to 3.6 GHz is designed and fabricated. The measured results are found to agree well with the simulated ones.
Funding statement: This work is supported by the National Natural Science Foundation of China (61301071).
References
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© 2017 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
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- Overview of Sparse Graph for Multiple Access in Future Mobile Networks
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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
