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Bandwidth enhancement technique with low group delay variation CMOS power amplifier for UWB system
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نویسنده
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sapawi r. ,sahari s.k. ,salleh d.n.s.d.a. ,mat d.a.a. ,murad s.a.z.
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منبع
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journal of telecommunication, electronic and computer engineering - 2017 - دوره : 9 - شماره : 3-10 - صفحه:41 -47
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چکیده
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This paper introduced a bandwidth enhancement technique for ultra-wideband (uwb) transmitter design with low group delay variation for cmos power amplifier (pa). three stages of cascade common source topology are implemented to provide high gain with good gain flatness. shunt peaking inductor is introduced at every stage of the introduced pa to improve the bandwidth and to achieve low group delay variation simultaneously. a resistive shunt feedback method is implemented at the first stage to acquire good input matching. the first and second stages attain gain at lower corner and upper-end frequency respectively,whilst the third stage smoothed the gain flatness curve. in addition,the theoretical analysis of group delay is investigated to determine the important design factor for low group delay variation in 3.1 to 10.6 ghz cmos pa for uwb transmitters. the outcome of the research shows that a gain about 11.48 ± 0.6 db at average,s11 less than -10 db,and s22 less than -14 db is achieved. moreover,excellent group delay variation is acquired throughout the entire band,measuring about ±85.8 ps.
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کلیدواژه
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Bandwidth enhancement; Cascade topology; CMOS PA; Group delay variation; UWB
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آدرس
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department of electrical and electronic engineering,faculty of engineering,universiti malaysia sarawak,kota samarahan,sarawak, Malaysia, department of electrical and electronic engineering,faculty of engineering,universiti malaysia sarawak,kota samarahan,sarawak, Malaysia, department of electrical and electronic engineering,faculty of engineering,universiti malaysia sarawak,kota samarahan,sarawak, Malaysia, department of electrical and electronic engineering,faculty of engineering,universiti malaysia sarawak,kota samarahan,sarawak, Malaysia, school of microelectronic engineering,universiti malaysia perlis (unimap), Malaysia
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Authors
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