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This paper presents the design of a V-band logarithmic power detector (PD) and the integration with a 60-GHz CMOS vital-signs Doppler radar sensor to be incorporated with a microprocessor control unit (MCU) for fast automatic clutter cancellation. The PD adopts the successive detection logarithmic amplifier (SDLA) topology and achieves a high dynamic range by replacing the limited amplifiers with millimeter-wave (MMW) linear amplifiers. From the measurement results, the PD exhibits a dynamic range and logarithmic errors higher than 35 dB and within ±2 dB from 50 to 62 GHz. The whole integrated radar sensor chip is fabricated by a 90-nm CMOS process with a chip size of 2 mm $\times2.34$ mm and a dc power consuming of 243 mW. The radar chip and a 60-GHz 17-dBi patch-array antenna are integrated by bondwire interconnection on a compact single carrier board for experimental test. By incorporating the MCU to the radar chip board, the fast automatic clutter canceling can achieve more than 25-dB clutter cancellation. Moreover, it shows a successful vital-signs detection for a distance more than 1.2 m. [ABSTRACT FROM PUBLISHER]

ABSTRACT This article presents 75-110-GHz highly isolated T/R switch in 90nm CMOS. The proposed T/R switch circuit design is focused on highly isolation performance which is achieved by using both parallel inductors and leakage-cancellation techniques. To also reduce insertion loss which is also an important design key point, series-shunt single-pole double throw (SPDT) switch with optimizing transistors size and body-floating technique are adopted. From the experiment results, the designed switch has good performance of the return loss, insertion loss and isolation in W-band. Compared with some previously reported works, the designed switch has the best isolation performance of 48 dB at 94-GHz, and IP1dB is > 9dBm, respectively.© 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2725-2731, 2016 [ABSTRACT FROM AUTHOR]