平衡式超寬頻帶通濾波器

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

101132349

專利證號

I 491102

專利獲證名稱

平衡式超寬頻帶通濾波器

專利所屬機關 (申請機關)

國立彰化師範大學

獲證日期

2015/07/01

技術說明

本專利案中具帶拒之平衡式超寬頻帶通濾波器是以步階阻抗多模槽線共振器來設計。其傑出超寬頻的差模響應(3.1-10.6 GHz)是以採用微帶線與槽線垂直交叉方式做為有效饋入結構，與適當分配槽線共振器之前三個共振頻率的方式達成。其共模訊號的高度拒斥特性是以避開輸入端與輸出端槽線共振訊號之間的耦合來達成。此外，利用饋入微帶線間的旁支殘段創造傳輸零點，使得差模傳輸響應在5-GHz 頻帶出現帶拒響應，因而使濾波器具備阻斷5-GHz無線區域網路訊號干擾的功能。 This patent presents a new 5 GHz band-notched balanced ultra-wideband (UWB) bandpass filter (BPF), which is designed using a stepped-impedance slotline multi-mode resonator (MMR). To obtain favorable uniform differential-mode (DM) response, a microstrip-to-slotline transition is used as the signal-feeding structure and the first three resonant modes of the slotline MMR are located in the UWB passband. Common-mode (CM) signal rejection is achieved by deploying the slotline MMR in such a way that the quarter-wavelength resonances occurring near the input and output sides of the resonator are well decoupled. Also featured in this design is the blocking of unwanted WLAN signals, which is achieved by loading the input feed-lines with a stepped-impedance microstrip stub to create a notch-band centered at 5.5 GHz. The designed BPF has a measured minimum DM insertion loss of 0.83 dB in the UWB passband, in which the measured CM suppression is larger than 18.85 dB.

備註

本部(收文號11000227011)同意該校110年4月21日研發字第1100400131號函申請終止維護專利(彰化師範大學)

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