Michael Boers

20.2 A 16TX/16RX 60GHz 802.11ad chipset with single coaxial interface and polarization diversity

The IEEE 802.11ad standard supports PHY rates up to 6.7 Gbps on four 2 GHz-wide channels from 57 to 64 GHz. A 60 GHz system offers higher throughput than existing 802.11ac solutions but has several challenges for high-volume production including: integration in the host platform, automated test, and high link loss due to blockage and polarization mismatch. This paper presents a 802.11ad radio chipset capable of SC and OFDM modulation using a 16TX-16RX beamforming RF front-end, complete with an antenna array that supports polarization diversity. To aid low-cost integration in PC platforms, a single coaxial cable interface is used between chips. The chipset is capable of maintaining a link of 4.6 Gbps (PHY rate) at 10 m.

A 60GHz transformer coupled amplifier in 65nm digital CMOS

A three stage transformer coupled amplifier for operation in the 57–64GHz band is presented. The amplifier uses differential capacitive neutralization and low loss transformers to achieve a gain of 30dB at 61GHz. The amplifier has an output compression point of 7.5dBm and a power added efficiency at 1dB compression of 9% at 57GHz. The amplifier has been fabricated in digital CMOS and occupies an area of 0.055mm2.

A Transformer-Feedback based wideband IF amplifier and mixer for a heterodyne 60 GHz receiver in 40 nm CMOS

This paper presents a wideband Intermediate Frequency (IF) amplifier and downconverter implemented for a 60-GHz receiver in a standard CMOS 40nm process. A Source-Gate Transformer-Feedback based cascode IF amplifier with a flat passband response over a frequency range of 11 GHz to 13 GHz is presented. An on-chip Lange Coupler is used to generate quadrature (I/Q) Local Oscillator (LO) signals. The I/Q downconverter employs a threewinding transformer to couple the transconductance (Gm) stage with the I and Q switching stages. Measured results show a peak receiver downconversion power-gain of 27.6dB with a maximum gain variation of 3.6dB, 4.7dB NF, -22dBm IIP3 while consuming 28.8mW from a 0.9V supply.