Abstract
Presented is a WR-3 band (220-325 GHz) waveguide bandpass filter, which is constructed from three offset waveguide resonators operating at TE101 mode. This directly coupled resonator filter with Chebyshev response is designed to have a centre frequency of 300 GHz, a fractional bandwidth of 3.3% and a passband return loss of 20 dB. This filter is fabricated using thick SU-8 photoresist micromachining technique and has been tested. The measured average passband insertion loss is as low as around 0.4 dB. The measured return loss is better than 15 dB across the whole passband.
Original language | English |
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Pages (from-to) | 480-482 |
Number of pages | 3 |
Journal | Electronics Letters |
Volume | 49 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1 Mar 2013 |
Keywords
- Chebyshev filters,Chebyshev response,SU-8 micromachined WR-3 band waveguide bandpass fi,SU-8 photoresist micromachining technique,TEtextless
- subtextgreater101textless
- /subtextgreater mode,band-pass filters,coupled resonator filter,frequency 220 GHz to 325 GHz,frequency 300 GHz,low insertion loss,micromachining,millimetre wave filters,noise figure 20 dB,off-set waveguide resonator,passband return loss,waveguide filters