1. Physical Channel Considerations for Chinese 60GHz Band
Sept 2012
doc.: IEEE /xxxxr0
Sept 2012
Physical Channel Considerations for Chinese 60GHz Band
Date:
Authors:
Zhiqiang Li
Xiaoming Peng / I2R

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

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
Zhiqiang Li

4. 60GHz Spectrum Allocation Worldwide
The released 60GHz spectrum in China only has 5GHz bandwidth, corresponding to channel 2 & 3 used in IEEE ad/WiGig.
USA, Canada, Korea
Europe
China
Japan
Australia
Zhiqiang Li

5. Justification to support at least 3 logical channels
This table gives the reason why three logical channels is needed for China’s 60GHz frequency bands. Only when we have over 3 logical channels, we can have have the network work nomally under multiple users, and if we have only 2 channels, the disturbance between adjacent users is unavoiable.
Three channel can work
Two channel can’t work
Four channel can work
Zhiqiang Li

6. Outline 60GHz Spectrum resources in China and worldwide
Channelization for Chinese 60GHz band
Realization of millimeter wave transceiver
Conclusion & Ref
In the second part, I’ll introduce the channelization for 11aj 60GHz band.
Zhiqiang Li

7. Proposed channel allocation for Chinese 60GHz
Six logical channels are supported.
Two 2.16GHz channels, which are compatible with 11ad devices.
Four 1.08GHz channels, which are more suitable for low power terminal devices such as smart phones and Tablets.
Flexible bandwidth mode for different applications with acceptable cost.
In this picture,
Zhiqiang Li

8. Outline 60GHz Spectrum resources in China and worldwide
Channelization for Chinese 60GHz band
Realization of millimeter wave transceiver
Conclusion & Ref
In the second part, I’ll introduce the channelization for 11aj 60GHz band.
Zhiqiang Li

9. Differences between 11ad and 11aj 60GHz 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.
Zhiqiang Li

10. 11aj 60GHz millimeter wave transceiver -direct conversion
Zhiqiang Li

11. 11aj 60GHz millimeter wave transceiver -double conversion
Zhiqiang Li

12. 11aj 60GHz frequency synthesizer
For direct conversion transceiver
For double conversion transceiver
Zhiqiang Li

13. 11aj 60GHz 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.
Zhiqiang Li

14. Outline 60GHz Spectrum resources in China and worldwide
Channelization for Chinese 60GHz band
Realization of millimeter wave transceiver
Conclusion & Ref
In the second part, I’ll introduce the channelization for 11aj 60GHz band.
Zhiqiang Li

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.
Zhiqiang Li

16. Reference
[1] [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.
Zhiqiang Li

17. Thanks!
Zhiqiang Li