Van-Hoang Do's research while affiliated with Technische Universität Berlin and other places
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Citations
... The frequency from 57 GHz to 66 GHz (or part of it) is unlicensed in most of the countries. This has tremendously increased the tendency of the circuit designers in this frequency range [1]. This is facilitated by the advent of new transistors with higher f t and f max [2]. ...
Reference: High power V-band power amplifier
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... The results are summarized in Table I, showing the minimum and maximum values of the measured gain and noise figure at 56 GHz for the up-state, and at 72 GHz for the down-state of the RF-MEMS switches. As seen, the designed switchable LNA achieves good performance in both bands, comparable to the state of the art in other BiCMOS technologies [5]- [7]. The switchable LNA outperforms conventional broadband designs, as in such designs more number of stages would be needed to maintain the high gain in both bands. ...
... The first stage (driver stage) consists of two transistors Ql and Q2 in cascode configuration. A current mirror, composed of three transistors and two resistances is used for biasing the driver stage [29]. Compared to the traditional way of mirroring the collector current, in this design the base current has been mirrored in the RF transistor and the bias point has been set. ...
... The realized mixer outperforms the state-ofthe-art mixers in similar technologies in terms of chip area, bandwidth and linearity as shown in Table II. [7] 60 -250 nm SiGe -6.5 -6 82.5 1.21 0 Micromixer RFIC'08 [8] 58-62 7 65 nm CMOS -7.5 -6.5 29 0.98 5 Gilbert cell with current steering MOTL'16 [9] 53-65 20 90 nm CMOS 0.78 -11 27.8 0.75 NR Gilbert-Cell E. Lett.'08 [10] 59-65 10 130 nm CMOS 2 ± 2 -5.6 24 0.15 0 Gilbert Cell IMS'10 [11] 15-50 107 180nm CMOS -14.5 ± 1.5 -11.5--7.5 (-10) 0 0.2 10 Resistive Ring Mixer MTT'12 [12] 40-108 92 90nm LP CMOS 0 ± 2 -12 @60GHz 9.6 0.23 0 Weak inversion ring mixer with IF buffer MOTL'12 [13] 30 ...
... Parameters Reference [6] Reference [7] This RF [GHz] 61.5 60 57～63 Conversion gain [dB] ...
Reference: Down Conversion Mixer for Millimeter Band
... To achieve the Gbps-level data rate requirement, using the millimeter (mm)-wave band, e.g., frequencies of 28 GHz, 38 GHz and 60 GHz, is a promising solution [2]. With the recent advance of circuit design for mm-wave band [3] [4] [5] [6], there have been growing interests in standardizing its use for 5G communications. Besides, the mm level wavelength enables the creation of small-sized antennas and other radio hardware. ...
