A Highly Integrated Ka Band Front-End Receiver
A highly integrated Ka band front-end receiver is presented. The proposed front-end receiver is developed for a Ka band passive imaging system. The design adopts single-stage heterodyne architecture at 2 GHz intermediate frequency (IF). Further, a two-layer planar technology is adopted for compact realization. The top layer of the front-end comprises of two monolithic microwave integrated circuit (MMIC) low noise amplifiers (LNAs), image rejection bandpass filter (BPF), passive mixer, local oscillator (LO) multiplier chain with associated filters for harmonic rejection, all realized on a single substrate. The bottom layer comprises of IF and power distribution sections. The measured front-end gain, noise figure and image rejection is 40 dB, 4.15 dB and 40 dB respectively. The measured spectral analysis and preliminary system level testing of the front-end exhibits satisfactory performance and confirms the suitability of the proposed front-end for imaging application.
Keywords: Millimeter wave, front-end receiver, passive imaging.
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ABOUT THE AUTHORS
Ghulam Mehdi
Ghulam Mehdi received his Bachelor of Engineering degree from NED University Karachi, Pakistan and Master of Engineering from Linkoping University, Linkoping, Sweden in 2000 and 2007 respectively. Currently, he is pursuing his PhD degree at Beijing University of Aeronautics and Astronautics University, Beijing, China. His research interest includes microwave and millimeter-wave circuit design.
Hu Anyong
Hu Anyong received his Bachelor of Engineering degree from the National University of Defence Technology, Changsha, China, in 2003. He got the PhD degree from Beijing University of Aeronautics and Astronautics (BUAA), Beijing, China, in 2009. Currently, he is faculty member at SOE&IE, BUAA, Beijing, China. His research interest includes signal processing, microwave remote sensing and microwave circuit design.
Jungang Miao
Jungang Miao received the B.S.E.E. degree from the National University of Defence Technology, Changsha, China, in 1982, the M.S.E.E. Degree from Beijing University of Aeronautics and Astronautics (BUAA), Beijing, China, in 1987, and the Dr. rer. nat. Degree in Physics from the University of Bremen, Germany, in 1998. From 1982 to 1984, Dr. Miao was working in Beijing with the Institute of Remote Sensing Instrumentation, Chinese Aerospace, where he developed space-borne micro-wave remote sensing instruments. From 1984 to 1993, he worked at the Electromagnetic Laboratory of BUAA, doing research and teaching in the field of microwave remote sensing. In 1993, he joined Institute of Environmental Physics and Remote Sensing, University of Bremen, Germany, as a staff member doing researches on space-borne microwave radiometry. In October 2003 he returned to the BUAA and since then he has been taking the Chair Professor position at the Electromagnetic Laboratory of BUAA. Dr. Miao’s research areas include electromagnetic theory, microwave engineering and microwave remote sensing of the atmosphere, including sensor development, calibration and data analyses.
Ghulam Mehdi
Ghulam Mehdi received his Bachelor of Engineering degree from NED University Karachi, Pakistan and Master of Engineering from Linkoping University, Linkoping, Sweden in 2000 and 2007 respectively. Currently, he is pursuing his PhD degree at Beijing University of Aeronautics and Astronautics University, Beijing, China. His research interest includes microwave and millimeter-wave circuit design.
Hu Anyong
Hu Anyong received his Bachelor of Engineering degree from the National University of Defence Technology, Changsha, China, in 2003. He got the PhD degree from Beijing University of Aeronautics and Astronautics (BUAA), Beijing, China, in 2009. Currently, he is faculty member at SOE&IE, BUAA, Beijing, China. His research interest includes signal processing, microwave remote sensing and microwave circuit design.
Jungang Miao
Jungang Miao received the B.S.E.E. degree from the National University of Defence Technology, Changsha, China, in 1982, the M.S.E.E. Degree from Beijing University of Aeronautics and Astronautics (BUAA), Beijing, China, in 1987, and the Dr. rer. nat. Degree in Physics from the University of Bremen, Germany, in 1998. From 1982 to 1984, Dr. Miao was working in Beijing with the Institute of Remote Sensing Instrumentation, Chinese Aerospace, where he developed space-borne micro-wave remote sensing instruments. From 1984 to 1993, he worked at the Electromagnetic Laboratory of BUAA, doing research and teaching in the field of microwave remote sensing. In 1993, he joined Institute of Environmental Physics and Remote Sensing, University of Bremen, Germany, as a staff member doing researches on space-borne microwave radiometry. In October 2003 he returned to the BUAA and since then he has been taking the Chair Professor position at the Electromagnetic Laboratory of BUAA. Dr. Miao’s research areas include electromagnetic theory, microwave engineering and microwave remote sensing of the atmosphere, including sensor development, calibration and data analyses.
