32 results on '"MeeLan Lee"'
Search Results
2. An IEEE 802.11a/b/g SoC for Embedded WLAN Applications.
- Author
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Lalitkumar Nathawad, David Weber, Shahram Abdollahi-Alibeik, Phoebe Chen, Syed Enam, Brian J. Kaczynski, Alireza Kheirkhahi, MeeLan Lee, Sotirios Limotyrakis, Keith Onodera, Katelijn Vleugels, Masoud Zargari, and Bruce A. Wooley
- Published
- 2006
- Full Text
- View/download PDF
3. A 65nm dual-band 3-stream 802.11n MIMO WLAN SoC.
- Author
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Shahram Abdollahi-Alibeik, David Weber, Hakan Dogan, William W. Si, Burcin Baytekin, Abbas Komijani, Richard Chang 0003, Babak Vakili-Amini, MeeLan Lee, Haitao Gan, Yashar Rajavi, Hirad Samavati, Brian J. Kaczynski, Sang-Min Lee, Sotirios Limotyrakis, Hyunsik Park, Phoebe Chen, Paul Park, Mike Shuo-Wei Chen, Andrew Chang 0002, Yangjin Oh, Jerry Jian-Ming Yang, Eric Chien-Chih Lin, Lalitkumar Nathawad, Keith Onodera, Manolis Terrovitis, Sunetra Mendis, Kai Shi, Srenik S. Mehta, Masoud Zargari, and David K. Su
- Published
- 2011
- Full Text
- View/download PDF
4. A single-chip CMOS bluetooth v. 2.1 radio SoC.
- Author
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Paul J. Husted, William W. Si, David Weber, Shahram Abdollahi-Alibeik, MeeLan Lee, Richard Chang 0003, Hakan Dogan, Haitao Gan, Yashar Rajavi, Susan Luschas, Soner özgür, and Masoud Zargari
- Published
- 2009
- Full Text
- View/download PDF
5. Design and implementation of a CMO 802.11n SoC.
- Author
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Sundar G. Sankaran, Brian J. Zargari, Lalitkumar Nathawad, Hirad Samavati, Srenik S. Mehta, Alireza Kheirkhahi, Phoebe Chen, Ke Gong, Babak Vakili-Amini, Justin A. Hwang, Mike Shuo-Wei Chen, Manolis Terrovitis, Brian J. Kaczynski, Sotirios Limotyrakis, Michael P. Mack, Haitao Gan, MeeLan Lee, Richard Chang 0003, Hakan Dogan, Shahram Abdollahi-Alibeik, Burcin Baytekin, Keith Onodera, Suni Mendis, Andrew Chang 0002, Yashar Rajavi, Steve Hung-Min Jen, David K. Su, and Bruce A. Wooley
- Published
- 2009
- Full Text
- View/download PDF
6. A Dual-Band CMOS MIMO Radio SoC for IEEE 802.11n Wireless LAN.
- Author
-
Masoud Zargari, Lalitkumar Nathawad, Hirad Samavati, Srenik S. Mehta, Alireza Kheirkhahi, Phoebe Chen, Ke Gong, Babak Vakili-Amini, Justin A. Hwang, Mike Shuo-Wei Chen, Manolis Terrovitis, Brian J. Kaczynski, Sotirios Limotyrakis, Michael P. Mack, Haitao Gan, MeeLan Lee, Richard Chang 0003, Hakan Dogan, Shahram Abdollahi-Alibeik, Burcin Baytekin, Keith Onodera, Suni Mendis, Andrew Chang 0002, Yashar Rajavi, Steve Hung-Min Jen, David K. Su, and Bruce A. Wooley
- Published
- 2008
- Full Text
- View/download PDF
7. A Single-Chip CMOS Bluetooth v2.1 Radio SoC.
- Author
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William W. Si, David Weber, Shahram Abdollahi-Alibeik, MeeLan Lee, Richard Chang 0003, Hakan Dogan, Haitao Gan, Yashar Rajavi, Susan Luschas, Soner özgür, Paul J. Husted, and Masoud Zargari
- Published
- 2008
- Full Text
- View/download PDF
8. An 802.11g WLAN SoC.
- Author
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Srenik S. Mehta, David Weber, Manolis Terrovitis, Keith Onodera, Michael P. Mack, Brian J. Kaczynski, Hirad Samavati, Steve Hung-Min Jen, William Weimin Si, MeeLan Lee, Kalwant Singh, Sunetra Mendis, Paul J. Husted, Ning Zhang, Bill McFarland, David K. Su, Teresa H. Meng, and Bruce A. Wooley
- Published
- 2005
- Full Text
- View/download PDF
9. A single-chip dual-band tri-mode CMOS transceiver for IEEE 802.11a/b/g wireless LAN.
- Author
-
Masoud Zargari, Manolis Terrovitis, Steve Hung-Min Jen, Brian J. Kaczynski, MeeLan Lee, Michael P. Mack, Srenik S. Mehta, Sunetra Mendis, Keith Onodera, Hirad Samavati, William W. Si, Kalwant Singh, Ali Tabatabaei, David Weber, David K. Su, and Bruce A. Wooley
- Published
- 2004
- Full Text
- View/download PDF
10. A Single-Chip CMOS Radio SoC for v2.1 Bluetooth Applications.
- Author
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David Weber, William W. Si, Shahram Abdollahi-Alibeik, MeeLan Lee, Richard Chang 0003, Hakan Dogan, Susan Luschas, and Paul J. Husted
- Published
- 2008
- Full Text
- View/download PDF
11. A Dual-Band CMOS MIMO Radio SoC for IEEE 802.11n Wireless LAN.
- Author
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Lalitkumar Nathawad, Masoud Zargari, Hirad Samavati, Srenik S. Mehta, Alireza Kheirkhahi, Phoebe Chen, Ke Gong, Babak Vakili-Amini, Justin A. Hwang, Mike Shuo-Wei Chen, Manolis Terrovitis, Brian J. Kaczynski, Sotirios Limotyrakis, Michael P. Mack, Haitao Gan, MeeLan Lee, Shahram Abdollahi-Alibeik, Burcin Baytekin, Keith Onodera, Sunetra Mendis, Andrew Chang 0002, Steve H. Jen, David K. Su, and Bruce A. Wooley
- Published
- 2008
- Full Text
- View/download PDF
12. A single-chip CMOS bluetooth v. 2.1 radio SoC
- Author
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H. Gan, S. Luschas, Shahram Abdollahi-Alibeik, MeeLan Lee, Yashar Rajavi, Masoud Zargari, W.W. Si, S. Ozgur, Hakan Dogan, R.T. Chang, D. Weber, and Paul J. Husted
- Subjects
Computer Networks and Communications ,Computer science ,business.industry ,Bandwidth (signal processing) ,Transmitter ,Electrical engineering ,Analog-to-digital converter ,Computer Science Applications ,law.invention ,Bluetooth ,CMOS ,law ,Modulation ,Low IF receiver ,Embedded system ,Electrical and Electronic Engineering ,business ,Frequency modulation - Abstract
Bluetoothcopyradios are becoming pervasive in small, battery-powered devices. This is being driven by the reduced area requirements, cost, and power consumption of Bluetooth chips. As process technology scales down to 0.13 mum CMOS and beyond, the opportunities to trade off digital complexity to reduce analog requirements can enable optimized radio designs. This article presents an architecture on both the transmitter and receiver that can optimize this digital/analog trade-off while still meeting all system requirements. A polar transmitter is presented that is capable of transmitting both basic rate and enhanced data rate traffic. The low-IF receiver is also optimized, requiring very little analog filtering and using an oversampled analog- to-digital converter to move the filtering burden to the digital domain. The result is the smallest and lowest power Bluetooth radio published to date.
- Published
- 2009
13. Design and implementation of a CMO 802.11n SoC
- Author
-
Masoud Zargari, S. Jen, B. Baytekin, MeeLan Lee, Ke Gong, Bruce A. Wooley, Manolis Terrovitis, S.-W.M. Chen, Lalitkumar Nathawad, Andrew Chang, K. Onodera, S.G. Sankaran, Babak Vakili-Amini, A. Kheirkhahi, S. Mendis, Shahram Abdollahi-Alibeik, Brian J. Kaczynski, J. Hwang, R.T. Chang, Michael P. Mack, Hakan Dogan, Sotirios Limotyrakis, Hirad Samavati, Yashar Rajavi, Srenik Mehta, D. Su, P. Chen, and H. Gan
- Subjects
Computer Networks and Communications ,business.industry ,Computer science ,Orthogonal frequency-division multiplexing ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Transmitter ,MIMO ,Physical layer ,Local area network ,Throughput ,Computer Science Applications ,Spatial multiplexing ,Computer architecture ,PHY ,Wireless lan ,Wireless ,Electrical and Electronic Engineering ,Transceiver ,business ,Computer network - Abstract
Wireless local area networks based on the IEEE 802.11 standard are rapidly replacing wires within homes and offices. The latest data-rate amendment to the IEEE 802.11 standard, known as the 802.11n, provides enhanced user experience by exploiting MIMO techniques that use multiple antennas for both transmitter and receiver. In conjunction with MAC layer improvements such as aggregating data, the 802.11n standard supports PHY data rates as high as 600 Mb/s with four spatial streams. This article discusses various MAC and PHY level modifications introduced in 802.11n, as well as the architecture, design trade-offs, and implementation details of a two spatial stream CMOS 802.11n-draft-compliant SoC.
- Published
- 2009
14. A Single-Chip CMOS Bluetooth v2.1 Radio SoC
- Author
-
Shahram Abdollahi-Alibeik, S. Luschas, Haitao Gan, D. Weber, MeeLan Lee, R.T. Chang, Masoud Zargari, Yashar Rajavi, S. Ozgur, W.W. Si, Hakan Dogan, and P. Husted
- Subjects
Radio transmitter design ,Analogue electronics ,Computer science ,business.industry ,Transmitter ,Electrical engineering ,Radio receiver ,Hardware_PERFORMANCEANDRELIABILITY ,Delta-sigma modulation ,Polar modulation ,law.invention ,Bluetooth ,CMOS ,Hardware_GENERAL ,law ,Modulation ,Hardware_INTEGRATEDCIRCUITS ,Electronic engineering ,Electrical and Electronic Engineering ,Transceiver ,business - Abstract
A single-chip Bluetooth v2.1-compliant CMOS radio SoC that supports Enhanced Data Rates is implemented in standard 0.13 mum CMOS technology. All functions of a Bluetooth radio are integrated in the SoC, including RF, analog and digital parts. The RF transceiver features a polar transmitter, a two-point modulated fractional-N synthesizer, a 500 kHz IF receiver with first order low-pass analog filtering, and a DeltaSigma ADC with 74 dB dynamic range. The total SoC die area is 9.2 mm2 with only 3.0 mm2 for analog and RF circuits. The basic-rate radio power consumption is below 30 mA for both receive and transmit.
- Published
- 2008
15. A Dual-Band CMOS MIMO Radio SoC for IEEE 802.11n Wireless LAN
- Author
-
Shahram Abdollahi-Alibeik, H. Gan, R.T. Chang, Bruce A. Wooley, D. Su, P. Chen, Suni Mendis, Sotirios Limotyrakis, Srenik Mehta, Brian J. Kaczynski, A. Kheirkhahi, J. Hwang, Yashar Rajavi, Hakan Dogan, S. Jen, Michael P. Mack, Hirad Samavati, K. Gong, Masoud Zargari, B. Baytekin, Manolis Terrovitis, Babak Vakili-Amini, S.-W.M. Chen, K. Onodera, Andrew Chang, Lalitkumar Nathawad, and MeeLan Lee
- Subjects
Frequency synthesizer ,IEEE 802 ,Computer science ,Orthogonal frequency-division multiplexing ,Amplifier ,dBm ,Transmitter ,MIMO ,Low-noise amplifier ,CMOS ,PHY ,Electronic engineering ,Baseband ,Electrical and Electronic Engineering ,Transceiver ,Quadrature amplitude modulation - Abstract
An 802.11n-draft-compliant 2times2, 2-stream MIMO radio SoC, incorporating two dual-band RF transceivers, analog baseband filters, data converters, digital PHY and MAC, and a PCI Express interface, has been integrated in a standard 0.13- mum digital CMOS technology with a die area of 36 mm2. The receiver achieves noise figures of 4 dB and 6 dB, respectively, at 2.4 GHz and 5 GHz. The transmitter EVM for a 2-stream, 40-MHz-bandwidth 64-QAM OFDM signal is - 31 dBc at 2.4 GHz and -8 dBm output power and -31.5 dBc at 5 GHz and - 4 dBm output power.
- Published
- 2008
16. An 802.11g WLAN SoC
- Author
-
Ning Zhang, S. Jen, D. Weber, Teresa H. Meng, Srenik Mehta, Manolis Terrovitis, MeeLan Lee, W.W. Si, D. Su, Michael P. Mack, S. Mendis, K. Onodera, Hirad Samavati, Brian J. Kaczynski, B. McFarland, P. Husted, K. Singh, and Bruce A. Wooley
- Subjects
Engineering ,Orthogonal frequency-division multiplexing ,business.industry ,Amplifier ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Electrical engineering ,Hardware_PERFORMANCEANDRELIABILITY ,Low-noise amplifier ,CMOS ,PHY ,Hardware_INTEGRATEDCIRCUITS ,Electronic engineering ,IEEE 802.11g-2003 ,Electrical and Electronic Engineering ,Transceiver ,business ,Quadrature amplitude modulation - Abstract
A single-chip IEEE-802.11g-compliant wireless LAN system-on-a-chip (SoC) that implements all RF, analog, digital PHY and MAC functions has been integrated in a 0.18-/spl mu/m CMOS technology. The IC transmits 0-dBm EVM-compliant output power for a 64-QAM OFDM signal. The overall receiver sensitivities are better than -92 and -73 dBm for data rates of 6 and 54Mb/s, respectively.
- Published
- 2005
17. A 65nm dual-band 3-stream 802.11n MIMO WLAN SoC
- Author
-
kai Shi, D. Su, Lalitkumar Nathawad, Chang Richard Ru-Gin, Hirad Samavati, Manolis Terrovitis, Jerry Jian-Ming Yang, Srenik Mehta, D. Weber, K. Onodera, Hakan Dogan, Mike Shuo-Wei Chen, Yangjin Oh, Shahram Abdollahi-Alibeik, Yashar Rajavi, Masoud Zargari, B. Baytekin, Babak Vakili-Amini, MeeLan Lee, Phoebe Chen, Paul Park, Eric Chien-Chih Lin, Haitao Gan, W.W. Si, Sang-Min Lee, Brian J. Kaczynski, Abbas Komijani, Andrew Chang, S. Mendis, Hyunsik Park, and Sotirios Limotyrakis
- Subjects
Engineering ,Hardware_GENERAL ,Robustness (computer science) ,business.industry ,Phase noise ,MIMO ,Physical layer ,Electronic engineering ,System on a chip ,Transceiver ,business ,Chip ,PCI Express - Abstract
The rapid commercialization of the IEEE 802.11n WLAN standard has increased the demand for higher data-rate and longer-range fully integrated MIMO SoCs that are backward-compatible with legacy IEEE 802.11a/b/g networks. This paper introduces a 3-stream, 3×3 MIMO WLAN SoC that utilizes three antennas to improve throughput, range, and link robustness. This chip integrates three dual-band transceivers, digital physical layer, media access controller, and a PCI express interface in a 65nm CMOS process. Improved EVM is achieved by reducing transmit and receive I/Q mismatch with calibration, and reducing the integrated phase noise with a reference clock doubler.
- Published
- 2011
18. A Single-Chip CMOS Radio SoC for v2.1 Bluetooth Applications
- Author
-
W.W. Si, Chang Richard Ru-Gin, Shahram Abdollahi-Alibeik, D. Weber, MeeLan Lee, Paul J. Husted, Hakan Dogan, and S. Luschas
- Subjects
Single chip ,Engineering ,business.industry ,Electrical engineering ,500 kHz ,Polar transmitter ,Die (integrated circuit) ,law.invention ,Bluetooth ,CMOS ,Hardware_GENERAL ,law ,Hardware_INTEGRATEDCIRCUITS ,System on a chip ,Transceiver ,business - Abstract
This paper presents a Bluetooth v2.1 compliant SoC that integrates all functions of a Bluetooth radio. The transceiver comprises a two-point modulated fractional-N synthesizer, a polar transmitter, and a 500 kHz IF receiver with minimal analog filtering. The radio architecture is chosen to minimize overall die area as well as power consumption for both the basic and enhanced data rates. The SoC is implemented in a standard 0.13 mum digital CMOS technology with a die area of 9.2 mm2, of which only 3.0 mm2 is occupied by the analog and RF blocks. The basic-rate radio draws a total supply current of 29.7 mA in the receive mode and 29.4 mA in the transmit mode.
- Published
- 2008
19. A Dual-Band CMOS MIMO Radio SoC for IEEE 802.11n Wireless LAN
- Author
-
Mike Shuo-Wei Chen, S. Jen, Sotirios Limotyrakis, MeeLan Lee, Shahram Abdollahi-Alibeik, A. Kheirkhahi, Hirad Samavati, Bruce A. Wooley, K. Gong, Babak Vakili-Amini, Manolis Terrovitis, K. Onodera, Srenik Mehta, J. Hwang, Andrew Chang, S. Mendis, Lalitkumar Nathawad, Michael P. Mack, Brian J. Kaczynski, D. Su, P. Chen, H. Gan, Masoud Zargari, and B. Baytekin
- Subjects
Frequency synthesizer ,Engineering ,Voltage-controlled oscillator ,CMOS ,business.industry ,Phase noise ,Electronic engineering ,Baseband ,Radio frequency ,Multi-band device ,Transceiver ,business - Abstract
This paper introduces a fully integrated 2x2 two-stream MIMO radio SoC that integrates all of the functions of an 802.11n WLAN. The 0.13 mum CMOS radio SoC, which integrates two dual-band (2.4 GHz and 5 GHz) RF transceivers, analog baseband filters, data converters, digital physical layer, media access controller, and a PCI Express interface, provides a low-cost low-power small-form-factor WLAN solution. The MIMO radio comprises two identical dual-band transceivers that share a common frequency synthesizer capable of operating in both integer-N and fractional-N modes. In 2.4 GHz mode, the transceiver uses a direct-conversion architecture with a 3.2 GHz fractional-N frequency synthesizer. Direct conversion is used primarily because of its simplicity and the area reduction it offers by eliminating the need for an IF path. A 3.2 GHz synthesizer frequency is used to avoid VCO pulling. The 3.2 GHz synthesizer output fvco is divided by two and then mixed with the original 3.2 GHz fvco to generate a 4.8 GHz frequency. This 4.8 GHz signal at twice the RF frequency is distributed to both transceivers. Within each transceiver, the 4.8 GHz signal is divided by two to generate the 2.4 GHz in-phase and quadrature LO signals. In the 5 GHz mode, the transceiver uses a sliding-IF dual-conversion architecture, in which the RF and IF LO signals are centered at 2/3 fRF and 1/3 fRF, respectively. The frequency synthesizer, operating in integer-N mode, thus provides a 3.2 GHz RF LO signal that is buffered and distributed to both transceivers. Within each transceiver a resistively loaded divide-by-two circuit is used to generate the quadrature LO signals at 1/3 fRF. The channel center frequencies in the 5 GHz band allow integer-N operation of the synthesizer with a relatively high reference frequency, thus improving the phase noise.
- Published
- 2008
20. An 802.11g WLAN System on a Chip
- Author
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Manolis Terrovitis, S. Jen, Suni Mendis, K. Onodera, David K. Su, Srenik Mehta, Bruce A. Wooley, Weimin Si, Michael Peter Mack, D. Weber, Ning Zhang, Bill McFarland, Hirad Samavati, Brian J. Kaczynski, K. Singh, Teresa H. Meng, Paul Husted, and MeeLan Lee
- Subjects
Engineering ,business.industry ,Emerging technologies ,Wireless lan ,IEEE 802.11g-2003 ,Wireless ,System on a chip ,business ,Telecommunications - Published
- 2007
21. A Fully Integrated RF Front-End with Independent RX/TX Matching and +20dBm Output Power for WLAN Applications
- Author
-
K. Vleugels, S. Simon Wong, MeeLan Lee, D. Weber, Chang Richard Ru-Gin, and D. Su
- Subjects
Engineering ,RF front end ,CMOS ,Orthogonal frequency-division multiplexing ,business.industry ,Electronic engineering ,System on a chip ,Transceiver ,business ,Sensitivity (electronics) ,Signal ,Quadrature amplitude modulation - Abstract
An RF front-end for a WLAN SoC is implemented in 0.18mum CMOS. It integrates a +20dBm PA, a high-sensitivity LNA, and a T/R switch. The T/R switch incorporates an impedance-transformation network to provide a receive S11 of -15dB at 2.4GHz and a sensitivity of -73dBm for a 54Mb/s 802.11g signal. For 64QAM OFDM at 2.4GHz, the TX EVM is -25dB at an output power of +16dBm.
- Published
- 2007
22. An IEEE 802.11a/b/g SoC for Embedded WLAN Applications
- Author
-
Shahram Abdollahi, Lalitkumar Nathawad, MeeLan Lee, K. Vleugels, Brian J. Kaczynski, Alireza Kheirkhahi, K. Onodera, D. Weber, Bruce A. Wooley, Syed Enam, Sotirios Limotyrakis, Masoud Zargari, and P. Chen
- Subjects
Engineering ,CMOS ,business.industry ,PHY ,Orthogonal frequency-division multiplexing ,Embedded system ,Low-power electronics ,System on a chip ,Transceiver ,business ,Quadrature amplitude modulation ,IEEE 802.11a-1999 - Abstract
An 802.11 a/b/g wireless LAN SoC for low-power embedded applications is implemented in a 0.18mum CMOS technology. The IC integrates the RF transceiver, digital PHY and MAC, CPU and host interface. For 64QAM OFDM, the 5GHz/2.4GHz TX EVM is -27.4dB/-27.5dB at an output power of -5.2dBm/-3.5dBm. Overall 5GHz/2.4GHz RX sensitivity is -73dBm/-76dBm at 54Mb/s
- Published
- 2006
23. A Single-Chip CMOS Radio SoC for v2.1 Bluetooth Applications.
- Author
-
Weber, D., Si, W.W., Abdollahi-Alibeik, S., MeeLan Lee, Chang, R., Dogan, H., Luschas, S., and Husted, P.
- Published
- 2008
- Full Text
- View/download PDF
24. A Fully Integrated RF Front-End with Independent RX/TX Matching and +20dBm Output Power for WLAN Applications.
- Author
-
Chang, R., Weber, D., MeeLan Lee, Su, D., Vleugels, K., and Wong, S.
- Published
- 2007
- Full Text
- View/download PDF
25. An IEEE 802.11a/b/g SoC for Embedded WLAN Applications.
- Author
-
Nathawad, L., Weber, D., Shahram Abdollahi, Chen, P., Syed Enam, Kaczynski, B., Alireza Kheirkhahi, MeeLan Lee, Limotyrakis, S., Onodera, K., Vleugels, K., Zargari, M., and Wooley, B.
- Published
- 2006
- Full Text
- View/download PDF
26. Design and Implementation of a CMOS 802.11n SoC.
- Author
-
Sankaran, Sundar G., Zargari, Masoud, Nathawad, Lalitkumar Y., Samavati, Hirad, Mehta, Srenik S., Kheirkhahi, Alireza, Chen, Phoebe, Ke Gong, Vakili-Amini, Babak, Justin A. Hwang, Shuo-Wei Mike Chen, Terrovitis, Manolis, Kaczynski, Brian J., Limotyrakis, Sotirios, Mack, Michael P., Haitao Gan, Meelan Lee, Chang, Richard T., Dogan, Hakan, and Abdollahi-Alibeik, Shahram
- Subjects
IEEE 802.11 (Standard) ,MIMO systems ,CUSTOMER services ,MANAGEMENT of wireless communication systems ,ANTENNAS (Electronics) ,RADIO transmitter-receivers ,INTERNET telephony ,ORTHOGONAL frequency division multiplexing ,INTEGRATED circuits - Abstract
Wireless local area networks based on the IEEE 802.11 standard are rapidly replacing wires within homes and offices. The latest datarate amendment to the IEEE 802.11 standard, known as the 802.11n, provides enhanced user experience by exploiting MIMO techniques that use multiple antennas for both transmitter and receiver. In conjunction with MAC layer improvements such as aggregating data, the 802.11n standard supports PHY data rates as high as 600 Mb/s with four spatial streams. This article discusses various MAC and PHY level modifications introduced in 802.11n, as well as the architecture, design trade-offs, and implementation details of a two spatial stream CMOS 802.11n-draft-compliant SoC. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
27. A Single-Chip CMOS Bluetooth v. 2.1 Radio SoC.
- Author
-
Husted, Paul, Si, William W., Weber, David, Abdollahi-Alibeik, Shahram, MeeLan Lee, Chang, Richard, Dogan, Hakan, Haitao Gan, Rajavi, Yashar, Luschas, Susan, Ozgur, Soner, and Zargari, Masoud
- Subjects
BLUETOOTH technology ,ELECTRIC batteries ,COMPLEMENTARY metal oxide semiconductors ,INTEGRATED circuits ,RADIO transmitter-receivers ,BIT rate ,PROGRAM transformation ,RADIO technology equipment ,RANDOM access memory - Abstract
Bluetooth® radios are becoming pervasive in small, battery-powered devices. This is being driven by the reduced area requirements, cost, and power consumption of Bluetooth chips. As process technology scales down to 0.13 μm CMOS and beyond, the opportunities to trade off digital complexity to reduce analog requirements can enable optimized radio designs. This article presents an architecture on both the transmitter and receiver that can optimize this digital/analog trade-off while still meeting all system requirements. A polar transmitter is presented that is capable of transmitting both basic rate and enhanced data rate traffic. The low-IF receiver is also optimized, requiring very little analog filtering and using an over sampled analog-to-digital converter to move the filtering burden to the digital domain. The result is the smallest and lowest power Bluetooth radio published to date. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
28. A Single-Chip CMOS Bluetooth v2. 1 Radio SoC.
- Author
-
Si, William W., Weber, David, Abdollahi-Alibeik, Shahram, MeeLan Lee, Chang, Richard, Dogan, Hakan, Haitao Gan, Rajavi, Yashar, Luschas, Susan, Ozgur, Soner, Husted, Paul, and Zargari, Masoud
- Subjects
SYSTEMS on a chip ,COMPLEMENTARY metal oxide semiconductors ,BLUETOOTH technology ,EMBEDDED computer systems ,INTEGRATED circuits ,WIRELESS communications ,DIGITAL electronics ,RADIO transmitter-receivers ,ELECTRONIC systems - Abstract
A single-chip Bluetooth v2.1-compliant CMOS radio SoC that supports Enhanced Data Rates is implemented in standard 0.13 μm CMOS technology. All functions of a Bluetooth radio are integrated in the SoC, including RF, analog and digital parts. The RF transceiver features a polar transmitter, a two-point modulated fractional-N synthesizer, a 500 kHz IF receiver with first order low-pass analog filtering, and a Δ∑ ADC with 74 dB dynamic range. The total SoC die area is 9.2 mm
2 with only 3.0 mm2 for analog and RF circuits. The basic-rate radio power consumption is below 30 mA for both receive and transmit. [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF
29. A Dual-Band CMOS MIMO Radio SoC for IEEE 802.1 in Wireless LAN.
- Author
-
Zargari, Masoud, Nathawad, Lalitkumar Y., Samavati, Hirad, Mehta, Srenik S., Kheirkhahi, Alireza, Chen, Phoebe, Ke Gong, Vakili-Amini, Babak, Hwang, Justin A., Shuo-Wei Mike Chen, Terrovitis, Manolis, Kaczynski, Brian J., Limotyrakis, Sotirios, Mack, Michael P., Haitao Gan, MeeLan Lee, Chang, Richard T., Dogan, Hakan, Abdollahi-Alibeik, Shahram, and Baytekin, Burcin
- Subjects
WIRELESS LANs ,COMPLEMENTARY metal oxide semiconductors ,DIGITAL electronics ,WIRELESS communications ,MIMO systems ,RADIO transmitter-receivers ,ELECTRONIC systems ,DATA transmission systems ,DIGITAL communications - Abstract
An 802.11n-draft-compliant 2 × 2, 2-stream MIMO radio SoC, incorporating two dual-band RF transceivers, analog baseband filters, data converters, digital PHY and MAC, and a PCI Express interface, has been integrated in a standard 0.13- μm digital CMOS technology with a die area of 36 mm
2 . The receiver achieves noise figures of 4 dB and 6 dB, respectively, at 2.4 GHz and 5 GHz. The transmitter EVM for a 2-stream, 40-MHz-bandwidth 64-QAM OFDM signal is - 31 dBc at 2.4 GHz and - 8 dBm output power and - 31.5 dBc at 5 GHz and - 4 dBm output power. [ABSTRACT FROM AUTHOR]- Published
- 2008
- Full Text
- View/download PDF
30. An 802.11g WLAN SoC.
- Author
-
Mehta, Srenik S., Weber, David, Terrovitis, Manolis, Onodera, Keith, Mack, Michael P., Kaczynski, Brian J., Samavati, Hirad, Hung-Min Jen, Steve, Weimin Si, William, MeeLan Lee, Singh, Kalwant, Mendis, Sunetra, Husted, Paul J., Ning Zhang, McFarland, Bill, Su, David K., Meng, Teresa H., and Wooley, Bruce A.
- Subjects
COMPLEMENTARY metal oxide semiconductors ,ELECTRONIC circuit design ,ELECTRONIC systems ,INTEGRATED circuits ,WIRELESS communications - Abstract
A single-chip lEEE-802.11g-compliant wireless LAN system-on-a-chip (SoC) that implements all RF, analog, digital PHY and MAC functions has been integrated in a 0.18-µm CMOS technology. The IC transmits 0-dBm EVM-compliant output power for a 64-QAM OFDM signal. The overall receiver sensitivities are better than -92 and -73 dBm for data rates of 6 and 54 Mb/s, respectively. [ABSTRACT FROM AUTHOR]
- Published
- 2005
- Full Text
- View/download PDF
31. A Single-Chip Dual-Band Tri-Mode CMOS Transceiver IEEE 802.11a/b/g Wireless LAN.
- Author
-
Zargari, Masoud, Terrovitis, Manolis, Steve Hung-Min Jen, Kaczynski, Brian J., MeeLan Lee, Mack, Michael P., Mehta, Srenik S., Mendis, Sunetra, Onodera, Keith, Samavati, Hirad, Si, William W., Singh, Kalwant, Tabatabei, Ali, Weber, David, Su, David K., and Wooley, Bruce A.
- Subjects
COMPLEMENTARY metal oxide semiconductors ,RADIO transmitter-receivers ,RADIO frequency oscillators ,FREQUENCY synthesizers ,WIRELESS LANs ,CRYSTAL oscillators ,IEEE 802.11 (Standard) ,POWER amplifiers ,WIRELESS communications - Abstract
A single-chip dual-band tri-mode CMOS transceiver that implements the RF and analog front-end for an IEEE 802.11a/b/g wireless LAN is described. The chip is implemented in a 0.25-μm CMOS technology and occupies a total silicon area of 23 mm
2 . The IC transmits 9 dBm/8 dBm error vector magnitude (EVM)-compliant output power for a 64-QAM OFDM signal. The overall receiver noise figure is 5.5/4.5 dB at 5 GHz/2.4 GHz. The phase noise is -105 dBc/Hz at a 10-kHz offset and the spurs are below -64 dBc when measured at the 5-GHz transmitter output. [ABSTRACT FROM AUTHOR]- Published
- 2004
- Full Text
- View/download PDF
32. A 65nm dual-band 3-stream 802.11n MIMO WLAN SoC.
- Author
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Abdollahi-Alibeik, S., Weber, D., Dogan, H., Si, W.W., Baytekin, B., Komijani, A., Chang, R., Vakili-Amini, B., MeeLan Lee, Gan, H., Rajavi, Y., Samavati, H., Kaczynski, B., Sang-Min Lee, Limotyrakis, S., Hyunsik Park, Chen, P., Park, P., Chen, M.S., and Chang, A.
- Published
- 2011
- Full Text
- View/download PDF
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