Dual-polarized wideband radiator with single-plane stripline feed
A dual-polarization and radiator technology, which is applied to antenna arrays that are energized separately, devices for manufacturing antenna arrays, antenna unit combinations with different polarization directions, etc., can solve the complex physical structure of phased arrays, cost and complexity of antennas Increased, not arranged on a single plane, etc.
Active Publication Date: 2018-08-03
RAYTHEON CO
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Problems solved by technology
[0004] However, the construction of this tapered slot phased array antenna requires electrical continuity between elements
This makes it difficult (and in some cases prohibitive) to use triangular grid patterns in phased arrays, and also requires the use of feed structures with interconnect architectures that are not arranged on a single plane (i.e. layers on multiple different layers of a printed circuit board)
This results in phased arrays with relatively complex physical architectures (such as complex feed structures and electronic packaging)
Furthermore, the inability to use triangular grids in combination with complex feed structures results in increased cost and complexity for phased array antennas provided by notched antenna elements
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[0033] The subject matter described herein relates to dual polarization interleaved tapered slot antenna elements (also known as "notch antenna elements") with a stripline-slot (slot) feed structure. The combination of the interleaved notch elements and the stripline-slot feed structure enables the antenna to operate over a relatively wide bandwidth of about 30% (typical) and over a relatively wide scan angle of about 60 degrees (typical). A plurality of dual polarized interleaved notch elements may be arranged to form a phased array. Because the notch antenna elements described herein do not require electrical continuity between adjacent elements, multiples of such dual-polarized interleaved notch antenna elements can be used in modular construction techniques to form a triangular grid pattern and A phased array antenna operable to receive electromagnetic signals of any polarization.
[0034] Furthermore, by interleaving the printed circuit boards on which the antenna elemen...
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An antenna is provided from a plurality of antenna elements, each having a pair of orthogonally coupled notch elements coupled to an interleaved stripline-to-slot feed structure. Each dual-polarized,interleaved tapered slot antenna element forms a building block and a plurality of such tapered slot antenna elements can be arranged to form a phased array antenna having a triangular lattice pattern. The phased array antenna is capable of receiving electromagnetic signals having orthogonal polarization and includes a feed structure which provides interconnections on a single plane. The structureof the tapered slot antenna structure provides wideband wide-scan performance, for multiple polarizations without requiring electrical continuity between adjacent notch antenna elements.
Description
Background technique [0001] As known in the art, phased array antennas (or, more simply, "phased arrays") are used in communications, radar and direction finding systems, and other multifunctional radio frequency (RF) systems. Phased arrays are typically provided by many individual radiating antenna elements. The choice of individual radiating elements and the placement of these elements have a significant impact on the performance and cost of a phased array antenna. [0002] It is also known that it is generally desirable for a radiating element to be able to efficiently transmit and receive RF signals with multiple polarizations over a wide frequency bandwidth and a wide electronic scanning volume (capacity) while exhibiting low insertion loss characteristics. [0003] One type of antenna element used to make phased array antennas is known as a tapered slot antenna element (also known as a "notch" antenna element). Notch antenna elements can have relatively low insertion l...
Claims
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IPC IPC(8): H01Q13/08H01Q21/06H01Q21/24H01Q21/00
CPCH01Q13/085H01Q21/0087H01Q21/064H01Q21/24H01Q1/50H01Q13/10H01Q21/0075
Inventor M·P·利特尔D·R·克拉利L·L·罗兰J·维塔兹
Owner RAYTHEON CO