resonating at 7.36 GHz is found to be 280 MHz
(3.15%). The impedance bandwidth of second band
which is resonating from 7.78 GHz to 11.59 GHz is
Fig. 4 — Variation of relative power vs azimuth angle of 4MRMSAA at: (a) 6.69 GHz; (b) 8.09 GHz; (c) 10.82 GHz; (d) 12.68 GHz; and (e) 14.36 GHz measured and are shown in Table 1 for the sake of
resonating frequencies and is presented in Table 1 for
comparison. When compared (ref. 13), both side lobe
the sake of comparison.
levels and cross polarization levels are also improved.
The gain of antennas is measured at the resonating
Figures 4 (b and d) show the radiation patterns of
frequencies and as shown in Table 1 indicates that the
4MRMSAA measured at 8.09 and 12.68 GHz,
gain of both the antennas is improved when compared to
respectively. At these frequencies, antenna shows
earlier work13. This shows that the use of slots and array
split beam radiation patterns which are useful in
configuration also improves the antenna gain
SAR for generating a pair of forward and backward
considerably31.
squinted beams and provide simultaneous measurement
of both the along-track and the cross-track
As 8MRMSAA gives improved impedance
velocities30. Figures 5 (a-b) show the radiation pattern of
bandwidth, the variation of input impedance profile
8MRMSAA measured at 7.36 and 7.99 GHz. At these
and phase plot is shown in Figs 6 and 7,
frequencies, 8MRMSAA shows the split beam character
respectively. It is seen that the input impedance
as of 4MRMSAA and it can also be used in SAR.
has multiple loops at the center of Smith chart that
The half power beam width (HPBW) of
validates its wide-band and multi resonance
4MRMSAA and 8MRMSAA is calculated for their
operation.
Fig. 5 — Variation of relative power vs azimuth angle of 8MRMSAA at: (a) 7.36 GHz; (b) 7.99 GHz; (c) 8.72 GHz; (d) 9.35 GHz; (e) 9.95 GHz; and (f) 11.07 GHz
resonating at 7.36 GHz is found to be 280 MHz
(3.15%). The impedance bandwidth of second band
which is resonating from 7.78 GHz to 11.59 GHz is
Fig. 4 — Variation of relative power vs azimuth angle of 4MRMSAA at: (a) 6.69 GHz; (b) 8.09 GHz; (c) 10.82 GHz; (d) 12.68 GHz; and (e) 14.36 GHz measured and are shown in Table 1 for the sake of
resonating frequencies and is presented in Table 1 for
comparison. When compared (ref. 13), both side lobe
the sake of comparison.
levels and cross polarization levels are also improved.
The gain of antennas is measured at the resonating
Figures 4 (b and d) show the radiation patterns of
frequencies and as shown in Table 1 indicates that the
4MRMSAA measured at 8.09 and 12.68 GHz,
gain of both the antennas is improved when compared to
respectively. At these frequencies, antenna shows
earlier work13. This shows that the use of slots and array
split beam radiation patterns which are useful in
configuration also improves the antenna gain
SAR for generating a pair of forward and backward
considerably31.
squinted beams and provide simultaneous measurement
of both the along-track and the cross-track
As 8MRMSAA gives improved impedance
velocities30. Figures 5 (a-b) show the radiation pattern of
bandwidth, the variation of input impedance profile
8MRMSAA measured at 7.36 and 7.99 GHz. At these
and phase plot is shown in Figs 6 and 7,
frequencies, 8MRMSAA shows the split beam character
respectively. It is seen that the input impedance
as of 4MRMSAA and it can also be used in SAR.
has multiple loops at the center of Smith chart that
The half power beam width (HPBW) of
validates its wide-band and multi resonance
4MRMSAA and 8MRMSAA is calculated for their
operation.
Fig. 5 — Variation of relative power vs azimuth angle of 8MRMSAA at: (a) 7.36 GHz; (b) 7.99 GHz; (c) 8.72 GHz; (d) 9.35 GHz; (e) 9.95 GHz; and (f) 11.07 GHz
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