A fully integrated CMOS differential power amplifier driver（PAD） is proposed for WiMAX applications. In order to fulfill the differential application requirements,a transmission line transformer is used as the outpu...A fully integrated CMOS differential power amplifier driver（PAD） is proposed for WiMAX applications. In order to fulfill the differential application requirements,a transmission line transformer is used as the output matching network.A differential inductance constitutes an inter-stage matching network.Meanwhile,an on chip balun realizes input matching as well as single-end to differential conversion.The PAD is fabricated in a 0.13μm RFCMOS process.The chip size is 1.1×1.1 mm^2 with all of the matching network integrated on chip. The saturated power is around 10 dBm and power gain is about 12 dB.展开更多
A 5.2 GHz variable-gain amplifier （VGA） and a power amplifier （PA） driver are designed for WLAN IEEE 802.11 a monolithic RFIC. The VGA and the PA driver are implemented in a 50 GHz 0.35 μm SiGe BiCMOS technology ...A 5.2 GHz variable-gain amplifier （VGA） and a power amplifier （PA） driver are designed for WLAN IEEE 802.11 a monolithic RFIC. The VGA and the PA driver are implemented in a 50 GHz 0.35 μm SiGe BiCMOS technology and occupy 1.12 × 1.25 mm^2 die area. The VGA with effective temperature compensation is controlled by 5 bits and has a gain range of 34 dB. The PA driver with tuned loads utilizes a differential input, single-ended output topology, and the tuned loads resonate at 5.2 GHz. The maximum overall gain of the VGA and the PA driver is 29 dB with the output third-order intercept point （OIP3） of 11 dBm. The gain drift over the temperature varying from -30 to 85 ℃ converges within ±3 dB. The total current consumption is 45 mA under a 2.85 V power supply.展开更多
This paper presents a transmitter IC with BPSK modulation for an ultra-wide band system.It is based on up-conversion with a high linearity passive mixer.Unlike the traditional BPSK modulation scheme,the local oscillat...This paper presents a transmitter IC with BPSK modulation for an ultra-wide band system.It is based on up-conversion with a high linearity passive mixer.Unlike the traditional BPSK modulation scheme,the local oscillator （LO） is modulated by the baseband data instead of the pulse.The chip is designed and fabricated by standard 0.18μm CMOS technology.The transmitter achieves a high data rate up to 400 Mbps.The amplitude of the pulse can be adjusted by the amplitude of the LO and the bias current of the driver amplifier.The maximum peak-to-peak amplitude of the pulse is 600 mV.It consumes only 20.3 mA current with a supply voltage of 1.8 V when transmitting a pulse at the maximum data rate.The energy efficiency is 91.4 pJ/pulse.The die area is 1.4×1.4 mm^2.展开更多
基金Project supported by the National Natural Science Foundation of China(No.61106025)the National High Technology Research and Develop Program of China(No.2012AA012301)
文摘A fully integrated CMOS differential power amplifier driver（PAD） is proposed for WiMAX applications. In order to fulfill the differential application requirements,a transmission line transformer is used as the output matching network.A differential inductance constitutes an inter-stage matching network.Meanwhile,an on chip balun realizes input matching as well as single-end to differential conversion.The PAD is fabricated in a 0.13μm RFCMOS process.The chip size is 1.1×1.1 mm^2 with all of the matching network integrated on chip. The saturated power is around 10 dBm and power gain is about 12 dB.
文摘A 5.2 GHz variable-gain amplifier （VGA） and a power amplifier （PA） driver are designed for WLAN IEEE 802.11 a monolithic RFIC. The VGA and the PA driver are implemented in a 50 GHz 0.35 μm SiGe BiCMOS technology and occupy 1.12 × 1.25 mm^2 die area. The VGA with effective temperature compensation is controlled by 5 bits and has a gain range of 34 dB. The PA driver with tuned loads utilizes a differential input, single-ended output topology, and the tuned loads resonate at 5.2 GHz. The maximum overall gain of the VGA and the PA driver is 29 dB with the output third-order intercept point （OIP3） of 11 dBm. The gain drift over the temperature varying from -30 to 85 ℃ converges within ±3 dB. The total current consumption is 45 mA under a 2.85 V power supply.
基金supported by the National High Technology Research and Development Program of China(No.2007AA01Z2b2)
文摘This paper presents a transmitter IC with BPSK modulation for an ultra-wide band system.It is based on up-conversion with a high linearity passive mixer.Unlike the traditional BPSK modulation scheme,the local oscillator （LO） is modulated by the baseband data instead of the pulse.The chip is designed and fabricated by standard 0.18μm CMOS technology.The transmitter achieves a high data rate up to 400 Mbps.The amplitude of the pulse can be adjusted by the amplitude of the LO and the bias current of the driver amplifier.The maximum peak-to-peak amplitude of the pulse is 600 mV.It consumes only 20.3 mA current with a supply voltage of 1.8 V when transmitting a pulse at the maximum data rate.The energy efficiency is 91.4 pJ/pulse.The die area is 1.4×1.4 mm^2.
