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A 69–81 GHz broadband power amplifier (PA) is implemented on TSMC 90 nm 1P9M CMOS low power (LP) process. Utilizing wideband power matching topology, the PA achieves a flat measured output saturation power (Psat) of 12.5 ± 0.5 dBm from 70 to 80 GHz. The maximum Psat is 12.8 dBm at 76 GHz with peak power added efficiency (PAE) of 9.9% and the output 1-dB compression point (OP1dB) is 9.5 dBm. The PA...
This paper explores a common-emitter buffer-based frequency multiplier which can be applied to the phase-locked loop (PLL) to boost the overall output frequency and locking range by locking the PLL in a lower fundamental frequency and then multiplying the fundamental frequency to a higher output frequency. An integer PLL with a frequency quadrupler is designed to verify this technique in 130nm SiGe...
Wide-tuning-range voltage-controlled oscillator (VCO) design is motivated by applications in broadband communications, radars, phase-locked loops and clock generation/distribution. In this paper, post-layout simulation results of a ring quadrature VCO (QVCO) combined with an exclusive-OR (XOR) to double the frequency in 130nm SiGe BiCMOS technology are presented. The combined VCO can be tuned from...
The CMOS variable gain low noise amplifier (LNA) presented in this paper is designed for frequency band 4.2-4.8 GHz ultra-wideband (UWB) application specified in China. Wideband input matching with low noise performance co-design method is shown. A three-bit digital programmable gain control circuit is exploited to achieve variable gain. Fabricated with 0.13-μm RF CMOS process, the die size with ESD-pads...
In this paper, a fully integrated monocycle pulse based impulse radio ultra-wideband (IR-UWB) transmitter designed and fabricated with SMIC 0.13-μm RF CMOS technology is reported for UWB application specified in China. The monocycle pulse is generated and binary phase modulated by all-digital pulse generator and modulator with low power consumption. A driver amplifier is followed to filter and further...
Terahertz (> 300 GHz) voltage-controlled oscillators (VCO) are envisioned for applications in remote sensing, advanced imaging and telecommunication. In this paper, simulation results of a fourth-harmonic VCO are presented. The VCO has a tuning range from 312.11 to 312.67 GHz (0.18%), consumes 58.07 mW of power and generates -62.4 dBm (575.4 pW) of output power into a 50 Ohm load. The phase noise...
A L-band gain controllable LNA with digital programmable gain controlling method is presented in this paper. A simple gain control circuit is exploited and added in the second stage of a cascade LNA to achieve gain tuning. Shunt-resistor feedback and noise cancelling technique are introduced in the first stage for excellent input match and low noise performance. Fabricated with 0.13-??m RF CMOS process,...
A CMOS micromixer for 3-5 GHz UWB receivers is developed in this paper, which employs a modified class-AB input stage so as to achieve high linearity and 50 Omega input matching with single-ended to differential conversion. A LO buffer and an output buffer are integrated in it for on-wafer testing. Our measurement results show that, with a 50 Omega output loaded, it can achieve 5 dB gain in power...
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