Abstract:
An antenna system (100) comprising a single antenna element having first (111) and second (112) antenna ports arranged to pass a respective first and second antenna signal. The first and second antenna signals being derived from a first common antenna signal (J 1 ) and arranged to be essentially equal in envelope. An antenna pattern of the system being arranged to be selectable between a first antenna pattern having a first polarization and a second antenna pattern having a second polarization substantially orthogonal to the first polarization. The first antenna pattern being selected by setting the first and second antenna signal to have the same polarity on first (111) and second (112) antenna ports, the second antenna pattern being selected by setting the first and second antenna signal to have substantially opposite polarities on first (111) and second (112) antenna ports.
Abstract:
위상 지연 셀 및 이를 포함하는 안테나가 개시된다. 본 발명의 일 실시예에 따른 위상 지연 셀은, 평면 형상의 반사판; 상기 반사판과 소정 간격 이격하여 위치하는 기판; 및 상기 기판의 일면에서, ㄴ자 형상 패턴이 십자 모양의 슬롯(Slot)을 축으로 상하 및 좌우로 대칭되도록 형성되며, 각각의 상기 ㄴ자 형상 패턴의 종단으로부터 소정의 길이를 갖는 스터브가 연장되어 형성되는 위상 지연 회로를 포함한다.
Abstract:
An antenna assembly for use with a predetermined carrier signal having a predetermined frequency and wavelength associated therewith, comprising: a dipole antenna, the dipole antenna including two electrically conductive elements (100, 110) of unequal lengths that are also not simple multiples of each other so that when transmitting at the wavelenght of the carrier signal, at least one moving null is created within the dipole antenna, wherein each of the two electrically conductive elements (100, 110) is connected at one end to a common feed-point and has another end, wherein the two electrically conductive elements from a loop-like shape with a small gap (120) between the another end of each of the two electrically conductive elements.
Abstract:
An electromagnetic antenna (10) comprises a continuous conductor (12) comprising a first length portion (14) and a second length portion (16), the first and second length portions each having a first end and a second end whereby the first end (14.1) of the first length portion (14) is connected to the second end (16.2) of the second length portion (16) at a first node (20), and the second end (14.2) of the first length portion is connected to the first end (16.1) of the second length portion (16.1) at a second node (22). The continuous conductor (12) extends in a generalized helical pattern as a single closed circuit around and over the surface of a generalized toroid (18). The first (14) and second (16) length portions of the continuous conductor are generally contrawound relative to one another, are insulated from one another and overlap one another.
Abstract:
본 발명은 안테나용 캐비티 필터에 관한 것으로서, 특히, 일측이 개구되고 격벽에 의해 구획된 다수의 캐비티를 가지는 필터 본체, 상기 다수의 캐비티 각각에 설치되는 공진 바, 상기 공진 바의 일부가 삽입되되, 상기 공진 바가 상기 캐비티에 설치되도록 마련된 공진바 보스 및 상기 공진바 보스의 내주면과 상기 공진 바의 외주면 사이에 배치되어 상기 캐비티의 공진 설계 시 상기 공진 바의 삽입 방향으로의 무빙 및 스톱 기능을 수행하는 공차관리 스토퍼부를 포함함으로써, 제품 전체의 생산수율을 향상시키는 이점을 제공한다.
Abstract:
A wideband double monopole meanderline loaded antenna having a single feed (110) through a vertical radiator (102), horizontal radiators (104) and vertical supports (114) connected to a ground place (112) is disclosed. Equalizing delay lines (108a, 108b) of the antenna can be manipulated to equalize reactance of the antenna thereby enabling proper impedance matching.
Abstract:
There is disclosed a meanderline loaded antenna comprising a ground plane, a plurality of vertical elements orthogonally affixed thereto, a driven vertical element affixed thereto and a horizontal element between the vertical elements. All but one of the plurality of vertical elements have an effective electrical length that is a quarter wavelength of the antenna operating frequency. Thus, these vertical elements represent an open and to not effect the antenna performance characteristics. One of the plurality of vertical elements will be operative and therefore the antenna length comprises the length of the operative element, the length of the driven element, and the length of the top plate therebetween.
Abstract:
A meander line loaded antenna (200) provides a wide instantaneous bandwidth with a first planar conductor (204) extending orthogonally from a ground plane (201), a second planar conductor (202) substantially parallel to the ground plane (201) and separated from the first planar conductor (204) by a gap (206), a meander line interconnecting the first and second planar conductors across the gap (206), and third conductor (212) connecting the second planar conductor to ground. A fourth conductor (210) provides enhanced capacitance between the first and second planar conductors. The antenna may be arranged in opposed pairs, and also as two orthogonally opposed pairs for enabling circular polarization. Applications include communications systems requiring wide instantaneous bandwidth and multimode capability.
Abstract:
Antenna elements (1 to 4) are arranged to form rhombuses, each side having a length (a) of a half wavelength ( lambda /2). Antenna elements (5 to 12) are bent at three points so that each side can have a length (b) of a quarter wavelength ( lambda /4). Groups of antenna elements (1 to 4), (5 to 8) and (9 to 12) are connected as shown in the figure. The antenna elements (9, 10) and the antenna elements (11, 12) are connected to a feeder (13). This configuration provides a high-gain antenna having a simplified flat structure.
Abstract:
An antenna system has a two-dimensional field of view, yet can be implemented on a surface, such as on electronic or photonic integrated circuits. The antenna system includes an array of antennas disposed in a predetermined non-linear pattern and a two-dimensional beamforming network (BFN). The antenna system can be steered/selectively beamformed in two dimensions through beam port selection. The beamforming network is disposed entirely on a single first surface. The beamforming network has a one-dimensional array-side interface disposed on the first surface and a one-dimensional beam-side interface disposed on the first surface. The antennas of the array of antennas are individually communicably coupled to the array-side interface. Segments of the beam-side interface map to respective pixels in the two-dimensional field of view.