A NOVEL NARROW BANDPASS FILTER FOR IMAGE REJECTION AND CHANNEL SELECTION IN A WIRELESS SLEEP APNOEA MONITORING SYSTEM | Zendy

Yang Yang | Zendy; Sushim Mukul Roy | Zendy; Nemai Chandra Karmakar | Zendy; Xi Zhu | Zendy

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A NOVEL NARROW BANDPASS FILTER FOR IMAGE REJECTION AND CHANNEL SELECTION IN A WIRELESS SLEEP APNOEA MONITORING SYSTEM

Author(s) -

Yang Yang,

Sushim Mukul Roy,

Nemai Chandra Karmakar,

Xi Zhu

Publication year - 2012

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier12012907

Subject(s) - band pass filter , sleep (system call) , wireless , selection (genetic algorithm) , channel (broadcasting) , computer science , filter (signal processing) , electronic engineering , telecommunications , computer vision , artificial intelligence , engineering , operating system

A highly compact bandpass filter (BPF) is designed with a capacitively-coupled compact ring resonator. The ground plane is perturbed with a combination of two inter-digital and two spiral defected ground structures (DGSs), which enhance the selectivity and suppress the higher order harmonics of the BPF respectively. The filter has a selectivity of 0.22 dB/MHz, passband insertion loss (IL) of 1.55 dB and bandwidth of 61 MHz at 2.53 GHz. The proposed compact ring resonator yields a size reduction of 70.5% compared to a conventional ring resonator. This BPF is significant for wireless telemetry monitoring systems for physiological parameters including electrocardiogram (ECG), electroencephalography (EEG) and electromyography (EMG) using portable devices.19 page(s

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