A 60GHz digitally controlled phase shifter in CMOS

Yu, Ying; Baltus, Peter; Roermund, Arthur van; Jeurissen, D.; Graauw, Anton de; Heijden, E. van der; Pijper, Ralf

doi:10.1109/esscirc.2008.4681839

Cited by 37 publications

(11 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In personal communication, the authors of [33], informed us that their 60 GHz phase shifting technology can be switched in picoseconds. However since…”

Section: Appendixmentioning

confidence: 94%

See 1 more Smart Citation

Augmenting data center networks with multi-gigabit wireless links

Halperin

Kandula

Padhye

et al. 2011

Proceedings of the ACM SIGCOMM 2011 Conference

214

129

View full text Add to dashboard Cite

The 60 GHz wireless technology that is now emerging has the potential to provide dense and extremely fast connectivity at low cost. In this paper, we explore its use to relieve hotspots in oversubscribed data center (DC) networks. By experimenting with prototype equipment, we show that the DC environment is well suited to a deployment of 60 GHz links contrary to concerns about interference and link reliability. Using directional antennas, many wireless links can run concurrently at multi-Gbps rates on top-ofrack (ToR) switches. The wired DC network can be used to sidestep several common wireless problems. By analyzing production traces of DC traffic for four real applications, we show that adding a small amount of network capacity in the form of wireless flyways to the wired DC network can improve performance. However, to be of significant value, we find that one hop indirect routing is needed. Informed by our 60 GHz experiments and DC traffic analysis, we present a design that uses DC traffic levels to select and adds flyways to the wired DC network. Trace-driven evaluations show that network-limited DC applications with predictable traffic workloads running on a 1:2 oversubscribed network can be sped up by 45% in 95% of the cases, with just one wireless device per ToR switch. With two devices, in 40% of the cases, the performance is identical to that of a non-oversubscribed network.

show abstract

“…In personal communication, the authors of [33], informed us that their 60 GHz phase shifting technology can be switched in picoseconds. However since…”

Section: Appendixmentioning

confidence: 94%

“…The flexibility of a phased array increases rapidly with the number of antenna elements. The 2.4 GHz Phocus array is commercially available today and uses 8 elements; in contrast, 60 GHz phased array design is an area of ongoing research [3,33], but SiBeam's initial WirelessHD products include 32 elements and fit into 1 in 2 .…”

Section: Appendixmentioning

confidence: 99%

Augmenting data center networks with multi-gigabit wireless links

Halperin

Kandula

Padhye

et al. 2011

Proceedings of the ACM SIGCOMM 2011 Conference

214

129

View full text Add to dashboard Cite

show abstract

“…As a fundamental component of a beamforming system, the phase shifter, which changes the phase of the signal to determine the direction of the combined beam, plays an important role. There have been efforts to achieve a low loss millimeter-wave phase shifter [3], [4]. In general, since it is difficult to realize a full 360 phase shifting range for 60 GHz phase shifter by a single structure, in most cases, a phase shifter is achieved by cascading several unit phase shifting elements that have a smaller phase shifting range, such as 22.…”

Section: Introductionmentioning

confidence: 99%

A Highly Integrated 1-Bit Phase Shifter Based on High-Pass/Low-Pass Structure

Song

Yoon

Park

2015

IEEE Microw. Wireless Compon. Lett.

View full text Add to dashboard Cite

This letter presents a highly integrated 1-bit 90 phase shifter based on high-pass/low-pass structure for 60 GHz beamforming applications using a standard 65 nm CMOS process. In order to overcome the limitation of the conventional low-pass only phase shifter, the combination of high-pass/low-pass network was utilized as a 1-bit phase shifter. By integrating a high pass network into the low-pass network with low loss single-pole single throw (SPST) switches that adapt a resistive body floating technique, the proposed phase shifter achieves average 5 dB IL and less than dB of insertion loss flatness and 1 dB rms amplitude error over the whole band in a small chip area of 0.16 mm including pads.

show abstract

“…All these phase shifters have passive components in the form of couplers (transmission lines) which results in large chip size. While considering phase shifters working in 60 GHz, a digitally controlled phase shifter is developed [15] [16]. A phase shifter both passive and active in 60 GHz is designed with a phase shift range of 180 o in passive phase shifter, insertion loss of 4.2 dB to 7.5 dB, noise figure of 16.5 dB and phase shift range of 360 o in the active phase shifter [17].…”

Section: Introductionmentioning

confidence: 99%