Fundamentals of Terahertz Devices and Applications

10 Chapter 11Figure 11.1 Current status of semiconductor single sources in THz range; out...Figure 11.2 Operation principle of RTD. (a) Layer structure, (b) Fermi spher...Figure 11.3 Fundamental structure of RTD oscillator. (a) RTD with slot reson...Figure 11.4 Electron movement with delay time in RTD.Figure 11.5 Structure of RTD oscillators. (a) Structure of fabricated planar...Figure 11.6 Structure and I–V characteristics of RTD. (a) Layer struct...Figure 11.7 Schematic illustration of decrease of NDC with frequency indicat...Figure 11.8 Oscillation characteristics of RTD oscillators with different th...Figure 11.9 Schematic illustration of slot antenna and RTD with equivalent c...Figure 11.10 Oscillation characteristics of RTD oscillators with and without...Figure 11.11 Parasitic elements around RTD. (a) Parasitic elements with sche...Figure 11.12 (a) Offset slot antenna for high output power and (b) theoretic...Figure 11.13 Array configuration of RTD oscillators for high output power. (...Figure 11.14 Large‐scale array and output power. (a) Oscillator element of l...Figure 11.15 PLL system of an RTD THz oscillator. (a) Block diagram, (b) dow...Figure 11.16 Frequency‐tunable RTD oscillator integrated varactor diode. (a)...Figure 11.17 Array configuration of frequency‐tunable oscillators for wide t...Figure 11.18 Direct modulation of RTD oscillator. (a) Measurement setup and ...Figure 11.19 Wireless data transmission using direct modulation of RTD oscil...Figure 11.20 Wireless data transmission with frequency or polarization divis...Figure 11.21 Absorbance of allopurinol measured by frequency‐tunable RTD osc...Figure 11.22 N ‐element antenna array. Each element is assumed to have its ow...

11 Chapter 12Figure 12.1 Link budget (L_{dB}) and FSPL up to 1 THz [3], with antenna gain...Figure 12.2 Frequency bands and atmospheric attenuation. The frequency range...Figure 12.3 (a) Outdoor THz experiments: left: communication at 125 GHz over...Figure 12.4 State of the art of THz sources.Figure 12.5 GaAs Schottky diode‐based direct detection embedded in hollow wa...Figure 12.6 Architectures of the first THz wireless links. Several approache...Figure 12.7 Photomixing process for THz generation. Two optical signals are ...Figure 12.8 (a) SEM view of a UTC‐PD photomixer [24]. (b) Power level genera...Figure 12.9 UTC‐PD photomixer combination [25], reaching 1.2 mW at 300 GHz....Figure 12.10 Complex THz modulation using photomixing technique.Figure 12.11 Multifrequency generation of THz signals using photomixing.Figure 12.12 Solid‐state and TWT power‐levels as function of carrier frequen...Figure 12.13 Representation of the current performance of THz communication ...Figure 12.14 Transmission channels in IEEE 802.15.3d format.

12 Chapter 13Figure 13.1 The increased interest in THz technology is apparent from recent...Figure 13.2 A prototype THz instrument for exploring the atmosphere and wate...Figure 13.3 The availability of planar Schottky diodes has made it possible ...Figure 13.4 A number of different technologies can possibly be used as local...Figure 13.5 A compilation of measured output power from various multiplied s...Figure 13.6 An all‐solid‐state receiver to 1200 GHz has been demonstrated. B...Figure 13.7 A Nb SIS chip fabricated on SOI wafer and packaged in a split wa...Figure 13.8 Recent measurements on high current density SIS receiver. The br...Figure 13.9 Comparison of the frequency‐dependent loss of different supercon...Figure 13.10 Measured sensitivity of SIS, HEB, and SBD is compared along wit...Figure 13.11 Measured D/H ratios indicate a large range for comets with only...Figure 13.12 A two‐pixel 340 GHz. (a) show the full assembly with WR‐8 input...Figure 13.13 W‐band GaN power amplifiers make it possible to design 1.9 THz ...Figure 13.14 A compact 16‐pixel LO chain has been built with diagonal horns ...Figure 13.15 Nominal power requirement of 10 microwatts is demonstrated acro...Figure 13.16 A nominal block diagram for an active instrument that can measu...

1 Cover

2 Title Page

3 Copyright Page

4 Dedication Page

5 About the Editor

6 List of Contributors

7 About the Companion Website

8 Table of Contents

9 Begin Reading

10 Index

11 Wiley End User License Agreement

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