5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end
5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end
摘要
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.
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.
参考文献9
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