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公开(公告)号：US20240364020A1
公开(公告)日：2024-10-31
申请号：US18767212
申请日：2024-07-09
Inventor： Rifaqat HUSSAIN
CPC classification number: H01Q21/0075 , H01Q5/321 , H01Q7/005 , H01Q9/0464 , H01Q13/10 , H01Q21/064 , H01Q21/28
Abstract: A reconfigurable, dual-band, MIMO antenna apparatus, a planar MIMO antenna system utilizing the antenna apparatus, and a method of transmitting and receiving a signal by the antenna apparatus are provided. The apparatus includes a dielectric planar substrate, a first element, a second element, two varactor diodes per element, and a microstrip feed-line. The first element and the second element each have slotted concentric annular rings. The second element is separated on the dielectric planar substrate from the first element, but is coplanar on the dielectric planar substrate with the first element. The two varactor diodes are placed in series with biasing circuitry, the biasing circuitry including RF chokes and current-limiting resistors. The microstrip feed-line feeds both antenna elements. The dual-band antenna elements can each be independently and concurrently tunable to two signal frequencies bands.
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公开(公告)号：US20240313408A1
公开(公告)日：2024-09-19
申请号：US18183796
申请日：2023-03-14
Inventor： Rifaqat HUSSAIN , Abdul Rehman CHISHTI , Abdul AZIZ , Abdullah AL-GARNI , Sharif Iqbal Mitu SHEIKH
CPC classification number: H01Q9/26 , H01Q5/307 , H01Q9/065 , H05K3/1283 , H05K3/30
Abstract: A shared aperture multi-band antenna is described. The antenna includes a dielectric circuit board, a folded dipole microstrip antenna, and a lumped inductor. The folded dipole microstrip antenna is formed on a top side of the dielectric circuit board. The microstrip antenna includes two meander paths. The two meander paths enclose a shared aperture therebetween. The lumped inductor is inserted across a first gap near the third edge. A first pair of parallel metallic patches, a second pair of parallel metallic patches, and a third pair of parallel metallic patches are located on the bottom side. The antenna resonates in a dual band frequency range comprising a first resonance band in a range of 0.4 GHz to 0.6 GHz and a second resonance band in a range of 4.7 GHZ to 5.8 GHz upon application of an input signal at both a first feed port and a second feed port.
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公开(公告)号：US20240305005A1
公开(公告)日：2024-09-12
申请号：US18181964
申请日：2023-03-10
CPC classification number: H01Q13/103 , H01Q1/288 , H01Q1/48 , H01Q13/106
Abstract: A dual feed slot-based circularly polarized wideband ultra high frequency (UHF) antenna for a cubic shaped satellite (Cube-Sat) is described. The UHF antenna includes a circuit board, a metallic layer, a hexagonal meandered slot, a capacitor, a first feed horn, and a second feed horn. The circuit board has a front side and a back side separated by a dielectric material. The metallic layer covers the back side of the circuit board. The hexagonal meandered slot symmetrically includes six legs of equal length and six vertexes. The capacitor is switchably connected to the metallic layer. The first feed horn is connected by a first feed line to a first edge of the front side of the circuit board. The second feed horn is connected by a second feed line to a second edge of the front side of the circuit board.
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公开(公告)号：US20240380115A1
公开(公告)日：2024-11-14
申请号：US18314449
申请日：2023-05-09
Inventor： Rifaqat HUSSAIN
IPC: H01Q13/10 , H01Q1/28 , H01Q13/02 , H01Q21/24 , H04B7/0413
Abstract: A dual port, slot-based multiple-input-multiple-output (MIMO) antenna is described. The antenna includes a dielectric circuit board, a metallic layer, four tapered feed horns and adjustable voltage sources. A first pentagonal loop slot line and a second pentagonal loop slot line are etched into the metallic layer. The tapered feed horns are located on an opposite side of the dielectric circuit board and are connected to input signal sources. Adjustable voltage sources are connected to varactor diodes of the first and seconds pentagonal loop slot line. The antenna resonates with circular polarization at resonant frequency in an ultra-high frequency sub-GHz range of about 578 MHz to about 929 MHz when an input signal is applied to each feedline. A dual port, slot-based single element antenna is also described.
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Patent Agency Ranking
公开(公告)号：US20240364019A1
公开(公告)日：2024-10-31
申请号：US18767179
申请日：2024-07-09
Inventor： Rifaqat HUSSAIN
CPC classification number: H01Q21/0075 , H01Q5/321 , H01Q7/005 , H01Q9/0464 , H01Q13/10 , H01Q21/064 , H01Q21/28
Abstract: A reconfigurable, dual-band, MIMO antenna apparatus, a planar MIMO antenna system utilizing the antenna apparatus, and a method of transmitting and receiving a signal by the antenna apparatus are provided. The apparatus includes a dielectric planar substrate, a first element, a second element, two varactor diodes per element, and a microstrip feed-line. The first element and the second element each have slotted concentric annular rings. The second element is separated on the dielectric planar substrate from the first element, but is coplanar on the dielectric planar substrate with the first element. The two varactor diodes are placed in series with biasing circuitry, the biasing circuitry including RF chokes and current-limiting resistors. The microstrip feed-line feeds both antenna elements. The dual-band antenna elements can each be independently and concurrently tunable to two signal frequencies bands.
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公开(公告)号：US20240332812A1
公开(公告)日：2024-10-03
申请号：US18193896
申请日：2023-03-31
Inventor： Rifaqat HUSSAIN
CPC classification number: H01Q13/16 , H01Q1/288 , H01Q13/02 , H01Q21/0006
Abstract: A four element folded slot-based multiple-input-multiple-output (MIMO) antenna for use with CubeSats is described. The MIMO antenna includes a dielectric circuit board, and a metallic layer that covers a top side of the dielectric circuit board and covers a first portion and a second portion of a bottom side. A first meandering slot wraps from the top side, over the first edge and into the first portion on the bottom side. A second meandering slot wraps from the top side, over the second edge and into the second portion of the bottom side. A first feed horn is directed towards the first meandering slot. A second feed horn is directed towards the second meandering slot. A first capacitor is connected to the metallic layer across a slot section of the first meandering slot. A second capacitor connected to the metallic layer across a slot section of the second meandering slot.
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公开(公告)号：US20240235042A1
公开(公告)日：2024-07-11
申请号：US18616249
申请日：2024-03-26
Inventor： Rifaqat HUSSAIN
CPC classification number: H01Q13/106 , H01P5/12 , H01Q5/35
Abstract: An antenna system and a method for fabricating an antenna system are disclosed. The antenna system includes a substrate having a top side and a bottom side, a single straight microstrip line on the top side of the substrate, a microstrip power divider (PD) on the top side of the substrate, and a ground plane on the bottom side. An input end of the single straight microstrip line is adjacent and vertical to a first edge of the substrate, and an output end of the single straight microstrip line is open. An input end of the microstrip PD is adjacent and vertical to a second edge of the substrate, and eight output ends of the microstrip PD are open. The first edge is parallel to the second edge. Further, three concentric square slots are etched on the ground plane.
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公开(公告)号：US20230268664A1
公开(公告)日：2023-08-24
申请号：US17675239
申请日：2022-02-18
Inventor： Rifaqat HUSSAIN
CPC classification number: H01Q21/0075 , H01Q21/064 , H01Q7/005 , H01Q9/0464
Abstract: A reconfigurable, dual-band, MIMO antenna apparatus, a planar MIMO antenna system utilizing the antenna apparatus, and a method of transmitting and receiving a signal by the antenna apparatus are provided. The apparatus includes a dielectric planar substrate, a first element, a second element, two varactor diodes per element, and a microstrip feed-line. The first element and the second element each have slotted concentric annular rings. The second element is separated on the dielectric planar substrate from the first element, but is coplanar on the dielectric planar substrate with the first element. The two varactor diodes are placed in series with biasing circuitry, the biasing circuitry including RF chokes and current-limiting resistors. The microstrip feed-line feeds both antenna elements. The dual-band antenna elements can each be independently and concurrently tunable to two signal frequencies bands.
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公开(公告)号：US20230198155A1
公开(公告)日：2023-06-22
申请号：US17890751
申请日：2022-08-18
Inventor： Rifaqat HUSSAIN
Abstract: An antenna system and a method for fabricating an antenna system are disclosed. The antenna system includes a substrate having a top side and a bottom side, a single straight microstrip line on the top side of the substrate, a microstrip power divider (PD) on the top side of the substrate, and a ground plane on the bottom side. An input end of the single straight microstrip line is adjacent and vertical to a first edge of the substrate, and an output end of the single straight microstrip line is open. An input end of the microstrip PD is adjacent and vertical to a second edge of the substrate, and eight output ends of the microstrip PD are open. The first edge is parallel to the second edge. Further, three concentric square slots are etched on the ground plane.
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