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PA and LNA for millimeter-wave WPAN using 90 nm CMOS process
Kang, Min-Soo,Kim, Bong-Su,Byun, Woo-Jin,Kim, Kwang-Seon,Oh, Seung-Hyeub,Pinel, Stephane,Laskar, Joy,Song, Myung-Sun Wiley Subscription Services, Inc., A Wiley Company 2009 MICROWAVE AND OPTICAL TECHNOLOGY LETTERS Vol.51 No.9
<P>We present the design and fabrication of power amplifier (PA) and low noise amplifier (LNA) in 60 GHz using 90 nm CMOS process. Both of them have three stages topology. We obtained small signal gain of 21 dB, P<SUB>1dB</SUB> of 4 dBm, and input/output return losses of <−9 dB in PA. We also obtained small signal gain of 25 dB, noise figure of <7 dB, P<SUB>1dB</SUB> of 1.5 dBm, input/out return losses of <−8 dB in LNA. The die sizes of PA and LNA are 1.1 × 0.8 mm<SUP>2</SUP> and 0.59 × 0.78 mm<SUP>2</SUP>, respectively. Both sizes contain the RF pads and bias pads. Especially, the size of LNA is reduced by using hairpin type matching structure. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 2029–2032, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24549</P>
Manos M. Tentzeris,Joy Laskar,Jong-Gwan Yook,Il Kwon Kim,Nickolas Kingsley,Matthew A. Morton,Stephane Pinel,John Papapolymerou 한국전자파학회JEES 2006 Journal of Electromagnetic Engineering and Science Vol.6 No.4
In this paper, the fractal shape is applied to microstrip band pass filters and integrated on a high-resistivity Si substrate to solve conventional 2<SUP>nd</SUP> harmonic problem. Conventional microstrip coupled line filters are popular in RF front ends, because they can be easily fabricated and integrated with other RF components. However, they typically have large second harmonics that can cause unwanted interference in interested frequency bands. Without any additional filters, the proposed Koch shape filters have suppressed the 2<SUP>nd</SUP> harmonics by about ?40㏈, so they can be used in systems such as direct conversion receiver with stringent harmonic suppression requirements.