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A 2×2 phased-array transmitter designed for V-band communications has been implemented by using CMOS 0.18 μm process. The circuit is based on a 30-GHz injection-locked oscillator (ILO) without using power amplifier. Combing a frequency doubler (FD) with the differential signal injection can generate a 60-GHz signal and perform a 360° phase shift with a harmonic suppression of 15 dBc. The power consumption...
An injection-locked frequency divider (ILFD) designed for Ka-band millimeter-wave applications has been implemented in 0.18 ??m CMOS process with a wide locking range and a low power consumption. Based on the circuit topology of the differential injection with combining the tail-and the direct injectors, the locking range can efficiently be enhanced. Comparing with the conventional ILFD circuits only...
This paper describes a low phase noise low dc power quadrature voltage controlled oscillator (QVCO) with a reflection-type IQ modulator. The QVCO using a standard bulk 0.18-mum CMOS process achieves a low phase noise of -115 dBc/Hz at 1-MHz offset frequency, a figure of merit (FOM) of - 191 dBc/Hz, and a core dc power consumption of 5.8 mW with a supply voltage of 1.8 V. The tuning frequency of the...
This paper proposes a quadrature voltage-controlled oscillator (QVCO) using 0.18-mum 1P6M standard CMOS process. The QVCO is realized by combining two differential oscillators via the bulk terminals. Using this approach, we can reduce the power dissipation and remove the noise from the additional coupling transistors compared with conventional QVCOs. To improve the phase noise, the oscillator is composed...
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