An amplitude-based phase detector at mm-wave frequency range

Summary form only given, as follows. A phase detector (PD) suitable for mm-wave frequency range is presented. It creates and combines quadrature phase components of the inputs and performs amplitude measurement to assess phase difference between the inputs. Phase detection is done at the carrier frequency; hence, it can be used in a PLL or DLL to reduce power consumption by eliminating frequency divider(s). The PD was implemented using the TSMC 40nm LP CMOS process. PD gain is more than 1.5dB/psec over 10GHz BW centered at 38GHz.