| Citation: |
Zhang Xuelian, Yan Jun, Shi Yin, Dai Fa Foster. 5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end[J]. Journal of Semiconductors, 2009, 30(1): 015008. doi: 10.1088/1674-4926/30/1/015008
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Zhang X L, Yan J, Shi Y, Dai F F. 5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end[J]. J. Semicond., 2009, 30(1): 015008. doi: 10.1088/1674-4926/30/1/015008.
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5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end
DOI: 10.1088/1674-4926/30/1/015008
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Abstract
A 5.2 GHz variable-gain amplifier (VGA) and a power amplifier (PA) driver are designed for WLAN IEEE 802.11a 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 mm2 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.-
Keywords:
- SiGe BiCMOS
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References
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Proportional views
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