1. Physical Channel Considerations for 802.11aj 60GHz Band Chinese Wireless Personal Area Network Standardization Group

2. Outline 60GHz spectrum resources in China and worldwide Channelization for 802.11aj 60GHz band Realization of millimeter wave transceiver Conclusion & Ref

3. 60GHz Spectrum in China Released by MIIT in [2006] 82 for micro power, short range applications. Frequency range: 59-64GHz Transmit Power: Maximum Transmit Power: 10dBm Limit of Peak Effective Isotropic Radiated Power : 47dBm Limit of Average Effective Isotropic Radiated Power : 44dBm EIRP: 57-59GHz & 64-66GHz, -5dBm / MHz

4. 60GHz Spectrum Allocation Worldwide The released 60GHz spectrum in China only has 5GHz bandwidth, corresponding to channel 2 & 3 used in IEEE 802.11ad/WiGig. According to CWPAN 60GHz functional requirement document, it is required to support at least 3 logical channels for CWPAN network. USA, Canada, Korea Europe China Japan Australia

5. Two channel can’t work Three channel can work Four channel can work Justification to support at least 3 logical channels

6. Outline 60GHz Spectrum resources in China and worldwide Channelization for 802.11aj 60GHz band Realization of millimeter wave transceiver Conclusion & Ref

7. Proposed channel allocation for 11aj 60GHz 1.Six logical channels are supported. 2.Two 2.16GHz channels, which are compatible with 11ad devices. 3.Four 1.08GHz channels, which are more suitable for low power terminal devices such as smart phones and Tablets. 4.Flexible bandwidth mode for different applications with acceptable cost.

8. Outline 60GHz Spectrum resources in China and worldwide Channelization for 802.11aj 60GHz band Realization of millimeter wave transceiver Conclusion & Ref

9. Differences between 11ad and 11aj millimeter wave transceiver design For low noise amplifier 、 power amplifier 、 Mixer 、 Up converter ， there are no differences between 11ad and 11aj. For frequency synthesizer, 11aj need to generate extra 59.94GHz ， 61.02GHz, 62.1GHz, 63.18GHz frequencies except for 60.48GHz and 62.64GHz in 11ad. 3 、 For variable gain amplifier and low pass filter, 11aj need to offer two bandwidths ： 1.08GHz and 540MHz. 4 、 For ADC and DAC ， 11aj could use the 11ad design.

10. 11aj millimeter wave transceiver -direct conversion

11. 11aj millimeter wave transceiver -double conversion

12. 11aj frequency synthesizer For direct conversion transceiver For double conversion transceiver

13. 11aj Low Pass Filter If we have a 1.08GHz bandwidth low pass filter for 2.16GHz channel(11ad), it is easy for us to change the bandwidth to 540MHz for the 1.08GHz channel(11aj). Take the active-RC filter as an example, and what we need to do is to change the capacitor value for bandwidth change.

14. Outline 60GHz Spectrum resources in China and worldwide Channelization for 802.11aj 60GHz band Realization of millimeter wave transceiver Conclusion & Ref

15. Conclusion Two 2.16GHz channels and four 1.08GHz channels for China’s 59-64GHz spectrum will be compatible with the 11ad devices, and also make it flexible for different applications, especially for low power mobile terminals. For millimeter wave transceiver design, the coexistence of 2.16GHz band and 1.08GHz band will not add too much cost.

16. Reference [1] 信无函 [2006]82 号 [2] Tabesh, Jiashu Chen, Cristian Marcu, Lingkai Kong, Shinwon Kang, Ali M.Niknejad, Elad Alon, “A 65nm CMOS 4-element Sub-34mW/Element 60GHz Phased-Array Transceiver”, IEEE JSSC, VoL.46,NO.12, Dec2011. [3] Mohammad Fakharzadeh, Mohammad-Reza Nezhad-Ahmadi, Behzad Biglarbegian, JavadAhmadi-Shokouh, Safieddin Safavi-Naeini, “CMOS Phased Array Transceiver Technology for 60GHz Wireless Applications”, IEEE Trans on Antennas and Propagation, VOL.58, NO.4, APR2010. [4] Sohrab Emami, Robert F Wiser, Ershad Ali, Mark G Forbes, Michael Q Gordon, Xiang Guan, Steve Lo, Patrick T Mcelwee, James Parker, Jon R Tani, Jeffery M Gilbert, Chinh H Doan, “A 60GHz CMOS Phased-Array Transceiver Pair for Multi-Gb/s Wireless Communications”, ISSCC2011, Session9. [5] Alberto Valdes-Garcia, Sean Nicolson, Jie-Wei Lai, Arun Natarajan, Ping-Yu Chen, Scott Reynolds, Jing-Hong Conan Zhan, Brian Floyd, “A SiGe BiCMOS 16-Element Phase-Array Transmitter for 60GHz Communications”, ISSCC2010, Session11. [6] Arun Natarajan, Scott K.Reynolds, Ming-Da Tsai, Sean T.Nicolson, Jing-Hong Conan Zhan, Dong Gun Kan, Duixian Liu, Yen-Lin Oscar Huangm, Alberto Valdes-Garcia, Brian A.Floyd.“A Fully Integrated 16-Element Phased-Array Receiver in SiGe BiCMOS for 60GHz Communications”, IEEE JSSC, VOL.46,NO.5, MAY2011.

17. Thanks!