一種無線體域網(wǎng)發(fā)射機(jī)體偏置線性化技術(shù)

柳揚; 楊銀堂; 李迪; 石佐辰

doi:10.11999/JEIT160297

一種無線體域網(wǎng)發(fā)射機(jī)體偏置線性化技術(shù)

doi: 10.11999/JEIT160297

柳揚^1, ,,
楊銀堂¹,
李迪¹,
石佐辰¹

基金項目:

國家自然科學(xué)基金(61504102)

計量
- 文章訪問數(shù): 1237
- HTML全文瀏覽量: 109
- PDF下載量: 315
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-03-31
- 修回日期: 2016-07-28
- 刊出日期: 2017-02-19

Body Biasing Linearization Technique for Wireless Body Area Network Transmitter

Funds:

The National Natural Science Foundation of China (61504102)

摘要

摘要: 該文針對無線體域網(wǎng)人體介質(zhì)通信(Human Body Communication, HBC)發(fā)射機(jī)嚴(yán)格的輸出頻譜指標(biāo)，提出一種利用體偏置線性化技術(shù)進(jìn)行頻譜整形的技術(shù)。通過設(shè)計緩沖器中晶體管體偏置，從而調(diào)整晶體管二階非線性系數(shù)，最終消除輸出端的二階互調(diào)項(Second order InterModulation, IM2)。采用0.35 m CMOS工藝和1.8 V供電電壓設(shè)計了一個基于體偏置技術(shù)的HBC發(fā)射機(jī)實例。仿真結(jié)果顯示二階輸入截點(IIP2)優(yōu)化到 90 dBm，輸出頻譜在1 MHz處抑制-130 dBr。較傳統(tǒng)電路，該技術(shù)提高了23 dB頻譜抑制，使輸出頻譜符合無線體域網(wǎng)IEEE 802.15.6協(xié)議中-120 dBr的指標(biāo)。
- 無線體域網(wǎng) /
- 放大器 /
- 線性化 /
- 集成電路
Abstract: A body biasing linearization technique is proposed to shape output spectrum mask to meet the stringent specification of the Human Body Communication (HBC) standard for Wireless Body Area Network (WBAN). Body biasing of the buffer transistors is properly designed, accordingly second-order nonlinearity coefficient is tuned so that Second order InterModulation product (IM2) at the output of buffer is cancelled. Under 0.35 m CMOS process and a supply voltage of 1.8 V, a sample HBC transmitter based on body biasing is designed. Simulation results show that an optimum of 90 dBm IIP2 can be obtained and output transmit spectral mask at 1 MHz is attenuated to be -130 dBr (dB relative to the center frequency). Compared with conventional circuits, an improvement of 23 dB spectrum attenuation is achieved, satisfying the -120 dBr requirement of IEEE 802.15.6 for WBAN.
- Wireless Body Area Network (WBAN) /
- Amplifier /
- Linearization /
- Integrated circuit

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參考文獻(xiàn)(16)

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