polar...Table 4.4 Operating states of reconfigurable antenna.Table 4.5 Measured loss for the PFN for the linear and circular polarizations...Table 4.6 Polarization states by status of the DC biases.Table 4.7 Polarizations by different feeding ports of the four LP antenna ele...4 Chapter 5Table 5.1 Possible radiation pattern modes from [3] showing states of the liq...
5 Chapter 6Table 6.1 Directivity, gain, antenna efficiency, and aperture efficiency for ...Table 6.2 The optimum gain achieved for different frequencies, degree of arri...Table 6.3 The resonance frequency of pixel antenna (GHz).Table 6.4 Bandwidth and efficiency of the pixel antenna in different states v...Table 6.5 Permittivity and permeability of the magnetic ink.Table 6.6 Gain and resonance frequency changes due to different levels of bia...Table 6.7 Measured antenna performance at two frequencies of operation of the...
6 Chapter 7Table 7.1 Average and 95% outage channel capacity (bit/s/Hz).Table 7.2 Design parameters of MIMO antenna.
7 Chapter 11Table 11.1 Performance summary from [11].
List of Illustrations
1 Chapter 1Figure 1.1 The importance of antenna in a wireless communication system.Figure 1.2 Some antenna types generated through Antenna Design Kit in Ansys ...Figure 1.3 Antenna performance shown using (a) reflection coefficient magnit...Figure 1.4 (a) Top view photograph of a frequency tunable concentric circula...Figure 1.5 (a) Geometry of the proposed reconfigurable PIFA radiating elemen...Figure 1.6 Surface current distribution for (a) 780 MHz in lower frequency b...Figure 1.7 Comparison of the simulated (solid lines) and measured (dash line...Figure 1.8 The simulated (solid lines) and measured (dash lines) total anten...Figure 1.9 Simulated (a, c, e, g) and measured (b, d, f, h) near‐omnidirecti...Figure 1.10 Simulated (a, c, e, g) and measured (b, d, f, h) near‐omnidirect...Figure 1.11 Antenna geometry with varactor diode and biasing network.Figure 1.12 Design parameters for the low (right) and high bands (left).Figure 1.13 Surface current distribution with capacitance of 1.6 pF: (a) 810...Figure 1.14 Photograph of the fabricated single‐feed dual band antenna: (a) ...Figure 1.15 Vector network analyzer (VNA) can be used for measurement of the...Figure 1.16 Antenna testing in anechoic chamber at the Antenna and Microwave...
2 Chapter 2Figure 2.1 (a) Top and bottom views of the frequency reconfigurable Spirogra...Figure 2.2 Ansys HFSS model of the SPMA frequency reconfigurable antenna: (a...Figure 2.3 Surface current distribution for (a) Case 1 at 2.3 GHz; (b) Case ...Figure 2.4 Comparison of measured and simulated VSWR for the frequency‐recon...Figure 2.5 (Left column): Comparison of simulated and measured co‐pol and cr...Figure 2.6 (Right column): Comparison of simulated and measured co‐pol and c...Figure 2.7 (a) Geometry of the frequency reconfigurable loop antenna with a ...Figure 2.8 Measured reflection coefficients of the frequency reconfigurable ...Figure 2.9 The antenna geometry for frequency and polarization reconfigurabi...Figure 2.10 Simulated and measured S11 versus frequency of the printed monop...Figure 2.11 Measured and simulated radiation patterns in the linear polariza...Figure 2.12 Varactor‐tuned microstrip patch antenna: (a) antenna geometry wi...Figure 2.13 Vector current distributions on the proposed antenna at (a) 1.42...Figure 2.14 The geometry of the concentric circular microstrip patch antenna...Figure 2.15 (a) Fabricated antenna with feed ports, varactor diodes, and bia...Figure 2.16 Measured S‐parameters (S11 and S22) controlled through feed netw...Figure 2.17 Simulation results for the effect of varactor resistance (R) on ...Figure 2.18 (a) Model of a MEMS bridge over a slot and its scattering parame...Figure 2.19 Photograph of the fabricated MEMS bridge over a slot for frequen...Figure 2.20 Test setup. (a) FSS unit cell under test, (b) FSS unit cell on t...Figure 2.21 (a) Geometry of the multiband optically controlled reconfigurabl...Figure 2.22 Optically controlled reconfigurable slotted waveguide array refl...Figure 2.23 MEMS‐controlled microstrip patch antenna and its frequency respo...Figure 2.24 Liquid crystalline elastomers (LCEs) with aluminum showing the d...Figure 2.25 Prototype of LCE frequency‐reconfigurable antenna at different t...Figure 2.26 S11 vs. frequency of the LCE frequency‐reconfigurable antenna ob...Figure 2.27 Topology of the patch antenna using a graphene‐stack‐defined bac...Figure 2.28 Reflection coefficient magnitudes of the patch antenna backed by...Figure 2.29 Liquid‐metal pixelated dipole prototype.Figure 2.30 (a) Layout of the bottom side of the dipole pixel with an actuat...Figure 2.31 CAD illustration of the mechanically reconfigurable dual‐band an...Figure 2.32 Photograph of the mechanically reconfigurable dual‐band slot ant...Figure 2.33 Measured (dashed) and simulated (solid) reflection coefficient (...Figure
