A linearly polarized radial-line slot-array antenna with a broadened beam

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

“…As the travelling wave radiates through the slots, the total power inside the cavity decreases. Equation (11) shows the remaining power after the travelling wave has radiated from the slots [29].…”

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

“…As the travelling wave radiates through the slots, the total power inside the cavity decreases. Equation (11) shows the remaining power after the travelling wave has radiated from the slots [29].…”

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

“…3. The single-layer and the double-layer coaxial slotted-cavity antenna with the double-ring array, whose arrangement of the slots refers to [33,34], are simulated to verify the performance of the doublelayer configuration. Their corresponding electric field, surface current and far-field pattern are shown in Figs.…”

“…Based on the theory of cavity modes as discussed above, when the number of double-ring slots is 18, each slot is required to withstand the power of 0.9 18 GW at least, and the minimum width of slot w s min can be calculated by (6), so the value is 2 mm. To further increase the power capacity, the slot widths of the inner and outer rings are chosen as 5 and 6 mm, which is much more wider than the slots in [15,[21][22][23][32][33][34].…”

“…The standard arrangement of slot in this paper based on the configuration of the RLSA has 16 slots. For the linear polarisation, the co-polarisation components must be combined in in-phase while the cross-polarisation components must cancel out each other [33,34]. Therefore, the slots must be in pair as formula (7, A) for linear-polarised radiation, as seen in Fig.…”

“…6b. The arrangement of slot pairs is different from the conventional linear-polarised slot ring array as described in [33,34]. Since three phase adjusted slot pairs are located in the void of the outer ring, only the phase difference along the ϕ direction is considered in discussing the desired polarisation directions.…”

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

“…As the travelling wave radiates through the slots, the total power inside the cavity decreases. Equation (11) shows the remaining power after the travelling wave has radiated from the slots [29].…”

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

“…3. The single-layer and the double-layer coaxial slotted-cavity antenna with the double-ring array, whose arrangement of the slots refers to [33,34], are simulated to verify the performance of the doublelayer configuration. Their corresponding electric field, surface current and far-field pattern are shown in Figs.…”

“…Based on the theory of cavity modes as discussed above, when the number of double-ring slots is 18, each slot is required to withstand the power of 0.9 18 GW at least, and the minimum width of slot w s min can be calculated by (6), so the value is 2 mm. To further increase the power capacity, the slot widths of the inner and outer rings are chosen as 5 and 6 mm, which is much more wider than the slots in [15,[21][22][23][32][33][34].…”

“…The standard arrangement of slot in this paper based on the configuration of the RLSA has 16 slots. For the linear polarisation, the co-polarisation components must be combined in in-phase while the cross-polarisation components must cancel out each other [33,34]. Therefore, the slots must be in pair as formula (7, A) for linear-polarised radiation, as seen in Fig.…”

“…6b. The arrangement of slot pairs is different from the conventional linear-polarised slot ring array as described in [33,34]. Since three phase adjusted slot pairs are located in the void of the outer ring, only the phase difference along the ϕ direction is considered in discussing the desired polarisation directions.…”

Highly Efficient Circularly Polarized Radial Line Slot Array Antenna Using Non-Uniform Slot Density for 5G Communication System

“…As the travelling wave radiates through the slots, the total power inside the cavity decreases. Equation (11) shows the remaining power after the travelling wave has radiated from the slots [29].…”

Compact coaxial slotted‐cavity feed antenna with shaped‐beam pattern for high‐power microwave using high‐order modes and polarisation cancellation techniques

“…3. The single-layer and the double-layer coaxial slotted-cavity antenna with the double-ring array, whose arrangement of the slots refers to [33,34], are simulated to verify the performance of the doublelayer configuration. Their corresponding electric field, surface current and far-field pattern are shown in Figs.…”

“…Based on the theory of cavity modes as discussed above, when the number of double-ring slots is 18, each slot is required to withstand the power of 0.9 18 GW at least, and the minimum width of slot w s min can be calculated by (6), so the value is 2 mm. To further increase the power capacity, the slot widths of the inner and outer rings are chosen as 5 and 6 mm, which is much more wider than the slots in [15,[21][22][23][32][33][34].…”

“…The standard arrangement of slot in this paper based on the configuration of the RLSA has 16 slots. For the linear polarisation, the co-polarisation components must be combined in in-phase while the cross-polarisation components must cancel out each other [33,34]. Therefore, the slots must be in pair as formula (7, A) for linear-polarised radiation, as seen in Fig.…”

“…6b. The arrangement of slot pairs is different from the conventional linear-polarised slot ring array as described in [33,34]. Since three phase adjusted slot pairs are located in the void of the outer ring, only the phase difference along the ϕ direction is considered in discussing the desired polarisation directions.…”