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Electronic & Optoelectronics Innotech Expo Filter componentsbandpass filtering circuit of bandpass filter
An equivalent LC model is developed to emulate the filter performanceto accelerate the design procedure. The source-load coupling renders this filter a cross-coupling effect which creates two transmission zeros by the passband edges for the signal selectivity enhancement.
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Electronic & Optoelectronics Innotech Expo Balanced bandpass filter design using the folded substrate integrated waveguide
A novel balanced BPF using the folded half-mode substrate integrated waveguide has a central frequency of 4.65 GHz with 0.55 GHz BWin-band insertion loss of 2.2 dB. The size of an FHMSIW is about 1/4 of the substrate integrated waveguide (SIW). The common-mode rejection levels are greater than 40 dB over a wide frequency range.
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Electronic & Optoelectronics Innotech Expo Coplanar-Waveguide Defected Ground Structure
A coplanar-waveguide defected ground structure is invented for signal filtering of communication systems. The performance of the coplanar-waveguide defected ground structure can be easily determined by the design of the simple ground defects. It demonstrates excellent passband stopband, leakage wave,slow wave characteristics.
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