Electromagnetic Waves and Antennas combined - Chapter 16 pot
Electromagnetic Waves and Antennas combined - Chapter 16 pot
... l/2 = 5λ/8.
648 16. Linear and Loop Antennas
Fig. 16. 5.1 Quarter-wave monopole above ground plane and the equivalent half-wave dipole.
16. 6 Traveling-Wave Antennas
The standing-wave antenna current ... antenna with a traveling-wave current of the form:
I(z)= Ie
−jβz
= Ie
−jpkz
, 0 ≤ z ≤ l (16. 6.7)
650 16. Linear and Loop Antennas
Fig. 16. 6.3 Surface-wave and leaky-wave...
Electromagnetic Waves and Antennas combined - Chapter 2 potx
... other.
Examples of such waves are the evanescent waves in total internal reflection, various
guided-wave problems, such as surface waves, leaky waves, and traveling-wave antennas.
The most famous ... forward-moving)
E
(z)= A(
ˆ
x +j
ˆ
y)e
−jkz
(left-polarized, forward-moving)
E
(z)= A(
ˆ
x −j
ˆ
y
)e
jkz
(left-polarized, backward-moving)
E
(z)= A(
ˆ
x
+j
ˆ
y
)e
jkz
(right-polarized, b...
Electromagnetic Waves and Antennas combined - Chapter 6 potx
... Structures
r=
-0 .1000 -0 .2000 -0 .4000 0.5000
A=
1.0000 1.0000 1.0000 1.0000
-0 .1000 -0 .1200 -0 .2000 0
-0 .0640 -0 .1000 0 0
-0 .0500000
B=
-0 .1000 -0 .2000 -0 .4000 0.5000
-0 .1880 -0 .3600 0.5000 0
-0 .3500 0.5000 ... as bandstop or bandpass filters.
Quarter-wave phase-shifted fiber Bragg gratings act as narrow-band transmission
filters and...
Electromagnetic Waves and Antennas combined - Chapter 7 potx
... as
p-polarization, π-polarization, or TM po-
larization, the electric fields lie on the plane of incidence and the magnetic fields are
Fig. 7.1.1 Oblique incidence for TM- and TE-polarized waves.
7.1. ... real-parts in the right-hand side of Eq. (7 .16. 8) are zero, showing that
|ρ
TE
|=|ρ
TM
|=1 and there is no (time-averaged) power flow into the right medium.
For magnetic media, includ...
Electromagnetic Waves and Antennas combined - Chapter 9 potx
... the values quoted in Table 9.6.1 for the
C-band and X-band waveguides, WR-159 and WR-90.
Example 9.8.2: WR-159 Waveguide. Consider the C-band WR-159 air-filled waveguide whose
characteristics ... microwave band.
name a b f
c
f
min
f
max
band P α
WR-510 5.10 2.55 1 .16 1.45 2.20 L 9MW 0.007
WR-284 2.84 1
.34 2.08 2.60 3.95 S 2.7 MW 0.019
WR-159 1.59 0.795 3.71 4.64 7.05 C 0.9 MW 0.043
W...
Electromagnetic Waves and Antennas combined - Chapter 13 potx
... ratios
P
in
/P
avG
and P
L
/P
avN
measure the mismatching between
the generator and the two-port and between the load and the two-port. Using the de -
nitions for the power gains, we obtain the input and output ... low-earth-orbit and multipoint microwave distribution
systems, and other low-noise applications.
At 2 GHz, its
S-parameters and noise-figure data are as follows,...
Electromagnetic Waves and Antennas combined - Chapter 23 potx
... length
dualband - two-section dual-band Chebyshev impedance transformer
dualbw - two-section dual-band transformer bandwidths
stub1 - single-stub matching
stub2 - double-stub matching
stub3 - triple-stub ... integrals C2(x) and S2(x)
hband - horn antenna 3-dB width
heff - aperture efficiency of horn antenna
hgain - horn antenna H-plane and E-plane gains
hop...
Electromagnetic Waves and Antennas combined - Chapter 1 pps
... plane waves propagating in dielectrics, conductors, and birefringent me-
dia, (b) guided waves propagating in hollow waveguides, transmission lines, and optical
fibers, and (c) propagating waves ... jωD is the total current in the right-hand side of Amp
`
ere’s law and
accounts for both conducting and dielectric losses. The time-averaged version of Poynt-
ing’s theorem is discu...
Electromagnetic Waves and Antennas combined - Chapter 3 ppt
... (180 km/hr) veloc-
ity resolution at a 3-GHz carrier frequency, would require
B = 5 MHz and T = 1 msec,
resulting in the large time-bandwidth product of
BT = 5000.
Such large time-bandwidth products ... quadrature weights and points
h = - wp^2 * tf * J1over(wp*sqrt(x.^2 - tf^2)) .* exp(j*w0*(t(i)-x));
Ez(i) = exp(j*w0*(t(i)-tf)) + w’*h;
% exact output
Es(i) = exp(j*w0*t(i)-j*k0*tf...
Electromagnetic Waves and Antennas combined - Chapter 4 pdf
... appropriate linear combinations. For
example, we define the right-polarized (forward-moving) and left-polarized (backward-
moving) waves for the
{E
+
,H
+
} case:
E
R+
=
1
2
E
+
−jηH
+
E
L+
=
1
2
E
+
+jηH
+
E
+
= ... wavenumber k
+
and
backward with
k
−
, and the reverse is true of the E
−
(z) component. The forward-moving
component of
E
+
and the backward-moving component...