Technical Name | Balanced bandpass filter design using the folded substrate integrated waveguide | ||
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Project Operator | National Changhua University of Education | ||
Summary | A novel balanced BPF using the folded half-mode substrate integrated waveguide has a central frequency of 4.65 GHz with 0.55 GHz BW and in-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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Scientific Breakthrough | 1.本專利案以微帶線饋入能量至摺疊式基板合成半模波導結構,以此結構為基礎,設計一款具共模壓制效果之平衡式帶通濾波電路,中心頻率為4.65 GHz,頻寬0.55 GHz,損耗2.2 dB。 |
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Industrial Applicability | The folded substrate integrated waveguide balanced BPF has advantages of EMC immunity property, wide BW, wide stopband, good CMRR, and good signal selectivity. It can be used as a RF front-end filter component of a wireless communication system, such as wifi and WLAN systems, and cellar phone base station. |