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[IEEE 2018 13th European Microwave Integrated Circuits Conference (EuMIC) - Madrid, Spain (2018.9.23-2018.9.25)] 2018 13th European Microwave Integrated Circuits Conference (EuMIC) - DC-170 GHz Characterization of 22nm FDSOI Technology for Radar Sensor Applications
摘要： The high frequency performance of fully wired 22nm FDSOI n- and p- MOSFETs was measured for the first time up to 170 GHz and 125 oC. Record MAG of 8 and 7 dB, respectively, is reported for n- and p-MOSFETs at 170 GHz, higher than for any other MOSFET technology, and comparable or higher than that of the best SiGe HBTs. Moreover, gm, MAG, fT, and fMAX improve monotonically as the gate length is reduced from 80 to 20 nm, and degrade by only 10-15% from 25 to 125 oC. Novel 4-terminal varactors and series-stacked n-MOSFET cascodes with back-gate control were also characterized to assess their application in VCOs, power amplifiers, single-transistor mixers and modulators. An output power of 14 dBm with 12% peak PAE and 24% drain efficiency were measured for 3- and 4-stack cascode test structures at 80 GHz, without any output matching network.
关键词： VCO,D-band,back gate,varactor,cascodes,de-embedding,FDSOI MOSFETs,MAG
更新于2025-09-04 15:30:14
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - High-gain Series-fed Phased Array Antenna for Wearable Wireless Applications
摘要： A new varactor controlled series-fed scanning array antenna is introduced. At the center of the design is a varactor controlled phase shifter, where varactor capacitance is changed by applying different bias voltages which alters the progressive phase between series-fed dipole input currents and allows array pattern to be scanned (-25, 0, 25 degrees). Good return loss (greater than 10 dB), high gain (10 dB), and beam scanning (within plus minus 25 degrees) with nulls between two consecutive beams are achieved.
关键词： Phased Array,Varactor controlled,Electronic beam steering
更新于2025-09-04 15:30:14
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[Institution of Engineering and Technology 12th European Conference on Antennas and Propagation (EuCAP 2018) - London, UK (9-13 April 2018)] 12th European Conference on Antennas and Propagation (EuCAP 2018) - Radiation Pattern Reconfigurable Antenna Design Using Characteristic Modes
摘要： In this paper, a radiation pattern reconfigurable antenna is presented, which is able to switch between a bidirectional and a unidirectional radiation pattern. The proposed antenna is conceived from the characteristic mode analysis of two parallel metallic plates, with the same and different sizes. By means of two PIN diodes, the size of the lower plate of the two parallel metallic plates can be modified, changing the behavior of the radiation pattern. During the ON/OFF switching, the operating frequency is shifted, what is solved by introducing a varactor diode in the antenna. Thus, the operating frequency is adjusted for the switching state.
关键词： Radiation pattern,Varactor diode,Characteristic Modes,PIN diode,Reconfigurable antenna
更新于2025-09-04 15:30:14