Hybrid SIW-GCPW Cruciform Directional Coupler
-
Dong-fang Guan
,
Zu-ping Qian
Abstract
A novel hybrid SIW-GCPW cruciform coupler is proposed and demonstrated. This coupler consists of a cross-over of substrate integrated waveguide (SIW) and ground coplanar waveguide (GCPW) in a square junction. Efficient coupling is achieved by adding two inductive metallic posts on the diagonal line of the junction. Taking advantages of low profile, low insertion loss of SIW and flexibility of GCPW, this coupler structure can be integrated in microwave and millimetre-wave planar circuits, especially in beam-forming networks. A 3 dB coupler is designed and fabricated operating around 33 GHz. Characteristics of 15 dB isolation between the input port and isolated port are achieved over 18% bandwidth. Design considerations and simulated as well as measured results are presented and discussed.
©[2014] by Walter de Gruyter Berlin Boston
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Articles in the same Issue
- Masthead
- Design of a 4-element Antenna Array for BDS Anti-jamming Applications
- Performance Analysis of Coaxial Fed Stacked Patch Antennas
- Dual-band Circularly Polarized Aperture Coupled Annular-ring Microstrip Antenna for GNSS Applications
- Wideband Gap Coupled Assembly of Rectangular Microstrip Patches for Wi-Max Applications
- Broadband SIW Sequential Feeding Network
- Hybrid SIW-GCPW Cruciform Directional Coupler
- Propagation Characteristics of Rectangular Waveguides at Terahertz Frequencies with Finite-Difference Frequency-Domain Method
- Novel Polarization Splitter Based on Highly Birefringent Dual-core Photonic Crystal Fibers with Hollow Ring Defects
- Optimal Design of Broadband Ultra-flattened Dispersion Photonic Crystal Fiber Using Genetic Algorithm
- Use of the Stokes Parameters of FBG for Transverse Strain Sensing and the Optimization of the Grating Structure
- Determination of Effective Constitutive Properties of Metal Powders at 2.45 GHz for Microwave Processing Applications
- Thermal Impact on the Performance of Highly Efficient Multi-stage Depressed Collector for Space TWT
