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This paper presents the dual-injection-locking technique to enhance the locking range of resonator-based frequency dividers. By fully utilizing the voltage and current injection of the input signal, the divider locking range is extended significantly. The 0.8-mW dual-injection-locked frequency divider was developed in 90-nm digital CMOS technology. The(More)
A wireless biotelemetry system operates in vivo, which requires low power consumption for long-lasting operation, high output power for long transferable distance, and high throughput for incorporating many recording electrodes and transmitting raw brain signals. An implantable 2.4-GHz on-off keying (OOK) transmitter with high throughput and high energy(More)
This paper presents the design and analysis of a 60-GHz 0.13-mum CMOS divide-by-three frequency divider (FD). The regenerative injection-locked technique is proposed to achieve divide-by-three function at millimeter-wave frequency. The novel level shifter is used to increase the overdrive voltage of the input switch of the loop divider such that the divider(More)
This paper presents the development of the wideband power amplifier (PA) for application to intelligent cognitive radios. The load-tracking based on the frequency-varied load-pull technique is proposed for the PA design. The load impedance tracking is realized by filter network synthesis. A 3-7.5-GHz broadband PA is demonstrated in 0.15-mum InGaAs(More)
This paper presents an amplitude-shift-keying (ASK) demodulator for RF identification tags, which can be embedded on panel displays. The ASK demodulator was implemented in 3-mum low-temperature polycrystalline silicon (LTPS) thin-film transistor (TFT) technology. Since the threshold voltages of LTPS TFTs are higher than CMOS transistors, the conventional(More)
This paper presents a new low power and high IIP2 0.25- /spl mu/m CMOS doubly balanced sub-harmonic mixer for a 5 GHz Industrial Scientific Medical (ISM) band direct conversion-zero IF receiver. Using a 1/2/spl times/LO frequency generation scheme, the sub-harmonic mixer, designed and fabricated, overcomes the LO self-mixing problem common in conventional(More)
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