Graduate Thesis Or Dissertation
 

Low-power millimeter-wave transceiver for short-range wireless and guided wave links

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/r494vr35g

Descriptions

Attribute NameValues
Creator
Abstract
  • Low-power millimeter-wave (mm-wave) transceivers are of interest for achieving energy-efficient high data rate short-reach wireless and guided-wave links. Spatial modulation or space-shift keying (SSK) can provide energy efficiency improvements by using antenna-switching or transmission direction switching for data modulation. Such links are particularly attractive at millimeter-wave frequencies due to small physical antenna size and large available bandwidths at mm-wave. SSK links are particularly suitable for slowly-varying channels and have potential applications on mm-wave wireless links within server chassis. A low-power pulsed two-element mm-wave transmitter (TX) is demonstrated that maintains energy-efficiency while enabling spatial modulation. A pulsed mm-wave digitally-controlled oscillator (DCO) provides low-power pulsed frequency-shift keying (FSK) capability, while variable DCO trigger pulse delay achieves controlled relative phase shift between TX elements for low-power space-shift keying (SSK). A two-element FSK/SSK 65nm CMOS TX prototype is packaged with PCB antennas to demonstrate a 2-FSK/4-SSK 3Gb/s TX with 21.4mW power consumption, achieving ~7.1pJ/bit. Two different implementations of two-element mm-wave FSK-SSK receiver (RX) are presented using 65nm CMOS that concurrently demodulate FSK and SSK, with series-FSK-SSK and parallel-FSK-SSK configurations. SSK demodulation is achieved using relative outputs of a two-element quadrature hybrid to detect angle of incidence. The 65nm CMOS 68GHz 2-element RX prototype is packaged with aperture-coupled PCB antennas to demonstrate >2Gb/s data rates while consuming <30mW across both elements. The first end-to-end CMOS FSK-SSK link using CMOS TX and RX is demonstrated with 2Gb/s data transfer across ~6cm in a reflective channel. Guided mm-wave links over metal wire waveguides have been proposed and promise another direction for achieving energy-efficient high data rate links. The low loss and wide dispersion-flat bandwidth of Sommerfeld-wave propagation on a single conductor wire (SCW) and TEM-wave propagation on a two-metal-wire (TMW) make such guided mm-wave electrical links promising. The first fully-integrated end-to-end low-power wireline transceiver system on a SCW using Sommerfeld-wave propagation mode is demonstrated using a 60GHz carrier frequency. Implemented in 65nm CMOS, the proposed system includes on-chip radial-mode antennas as well as integrated serializer, 60GHz OOK modulator, demodulator, deserializer and clocking. The link achieves 7Gb/s data rate across 20cm of 26AWG bare copper wire (diameter = 0.4mm), while consuming 70.9mW of power. Operating at 6Gb/s and 7Gb/s, this demonstration achieves BER < 1e-12 and 1e-5 respectively. The two-metal-wire waveguide also has the low loss that are measured to be ~0.2dB/cm at 60GHz and relative flat group delays. A 60GHz continuous-phase frequency shift keying (CPFSK) transceiver is implemented in 65nm CMOS as a prototype to potentially enable energy efficient high data rates guided mm-wave links over two-metal-wire and multi-lane two-metal-wire waveguides.
License
Resource Type
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Subject
Rights Statement
Publisher
Peer Reviewed
Language

Relationships

Parents:

This work has no parents.

In Collection:

Items

Thumbnail Title Date Uploaded Visibility Actions
file details ZhanKai2019.pdf 2019-03-15 Public Download