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Miniaturized conductor‐backed CPW high‐pass filter for C‐band satellite applications
Author(s) -
Souprayen Oudaya Coumar,
Sadasivam Tamilselvan
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31844
Subject(s) - m derived filter , insertion loss , materials science , return loss , band pass filter , waveguide filter , coplanar waveguide , ground plane , mechanical filter , optoelectronics , filter (signal processing) , bandwidth (computing) , constant k filter , high pass filter , optics , electronic engineering , prototype filter , low pass filter , electrical engineering , physics , telecommunications , engineering , microwave , antenna (radio)
A miniaturized conductor‐backed coplanar waveguide high‐pass filter for C‐band satellite applications is presented in this article. It consists of high impedance line and hexagonal resonator with interdigital coupling implemented in coplanar by etching square ring metallic pattern at the ground plane of the substrate. The necessary transmission zero is obtained by the shunt connected square ring pattern. The hexagonal resonator arrangement is used to produce band pass characteristics and the back side strip introduces capacitance effect thereby improving the rejection level. Hence, the filter behaves as high‐pass filter. Design, simulation, and fabrication of Satellite C‐band high‐pass filter characteristics are investigated. The proposed filter yields excellent band width starts from 2 to 8 GHz at 10 dB. Hence, the proposed filter will be best suitable for Satellite C‐band applications. The overall size of filter is achieved to be 39 mm × 8 mm × 1.6 mm on accounting all the features. The fractional band width of the filter is calculated from bandwidth to center frequency ratio and it is found 120%. S‐parameter results of high‐pass filter are return loss (RL) S 11 is about −30 dB and insertion loss (IL) S 21 is −0.98 dB are obtained in simulation. Whereas in the measurement, the RL is nearly −25 dB and IL is −2 dB.