Wireless communications antenna assembly generating minimal back lobe radio frequency (RF) patterns
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01Q-019/185
H01Q-021/10
출원번호
US-0123040
(2002-04-15)
우선권정보
KR-0071506 (2001-11-16)
발명자
/ 주소
Lee, Hyo-Jin
Kim, Myung-Duk
출원인 / 주소
LG Electronics Inc.
LG Telecom, Ltd.
대리인 / 주소
Lee, Hong, Degerman, Kang &
인용정보
피인용 횟수 :
24인용 특허 :
3
초록▼
An antenna assembly for wireless communications has various components to minimize signal influence when transmitting signals to minimize undesirable loop formation phenomena caused by (positive) feedback of signals. Signal wave scattering and diffraction causing back lobe radio frequency (RF) patte
An antenna assembly for wireless communications has various components to minimize signal influence when transmitting signals to minimize undesirable loop formation phenomena caused by (positive) feedback of signals. Signal wave scattering and diffraction causing back lobe radio frequency (RF) patterns are minimized by a particular antenna assembly structure having a reflector and at least one attenuating structural member, a metallic mesh wrapping the power cable of a feeder, a non-conductive antenna support structure, or any combination thereof. The dimensions of the various components, in particular the reflector and attenuators, can be varied according to desired wireless communications environment.
대표청구항▼
1. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of radiators transmitting radio signals; a first plate having the radiators mounted thereto, and reflecting the radio signals, the first plate comprising a main plate and a wing extending from ea
1. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of radiators transmitting radio signals; a first plate having the radiators mounted thereto, and reflecting the radio signals, the first plate comprising a main plate and a wing extending from each longitudinal edge thereof, each wing comprising an inner portion and an outer portion, the inner portion at an obtuse angle with respect to the main plate and the outer portion substantially perpendicular to the main plate; and a second plate mounted behind the first plate with a gap therebetween. 2. The antenna assembly of claim 1, wherein the second plate comprises a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate.3. The antenna assembly of claim 2, wherein the obtuse angle of the second plate is the same as the obtuse angle of the first plate.4. The antenna assembly of claim 3, wherein the inner portion of the wing of the first plate and the wing of the second plate are of the same width.5. The antenna assembly of claim 1, further comprising a third plate mounted behind the second plate with a gap therebetween.6. The antenna assembly of claim 5, wherein the gap between the second plate and the third plate is substantially equal to the gap between the first and second plates.7. The antenna assembly of claim 1, further comprising:a support structure supporting the first plate and the second plate, wherein at least a portion of the support structure is made of non-conductive material. 8. The antenna assembly of claim 1, further comprising:a feeder connected to the radiators to facilitate transmitting the radio signals, wherein a portion of the feeder is shielded by conductive material. 9. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of antennas transmitting radio signals; a first plate having the antennas mounted thereto and reflecting the radio signals; a second plate mounted behind the first plate with a gap therebetween, the second plate comprising a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate; a support structure supporting the first plate and the second plate; and a feeder connected to the radiators to facilitate transmitting the radio signals. 10. The antenna assembly of claim 9, further comprising a third plate mounted behind the second plate with a gap therebetween.11. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of antennas transmitting radio signals; a reflector having the antennas mounted thereto and reflecting the radio signals; an attenuator mounted behind the reflector with a gap therebetween, the attenuator comprising a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate; a support structure supporting the reflector and the attenuator; and a feeder connected to the radiators to facilitate transmitting the radio signals. 12. The antenna assembly of claim 11, further comprising a second attenuator mounted behind the attenuator with a gap therebetween.13. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of radiators transmitting radio wave signals; a reflector having the radiators mounted thereto and reflecting the radio wave signals, the reflector comprising a main plate and a wing extending from each longitudinal edge thereof, each wing comprising an inner portion and an outer portion, the inner portion at an obtuse angle with respect to the main plate and the outer portion substantially perpendicular to the main plate; and an attenuator mounted behind the reflector with a gap therebetween. 14. The antenna assembly of claim 13, wherein the attenuator comprises a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate.15. The antenna assembly of claim 14, wherein the obtuse angle of the reflector is the same as the obtuse angle of the attenuator.16. The antenna assembly of claim 15, wherein the inner portion of the wing of the reflector and the wing of the attenuator are of the same width.17. The antenna assembly of claim 16, wherein the antenna structure further comprises a second attenuator mounted behind the attenuator with a gap therebetween.18. The antenna assembly of claim 17, wherein the gap between the reflector and the attenuator is equal to the gap between the attenuator and the second attenuator.19. The antenna assembly of claim 17, wherein the second attenuator comprises a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate.20. The antenna assembly of claim 19, wherein the obtuse angle of the second attenuator is the same as the obtuse angles of the reflector and the attenuator.21. The antenna assembly of claim 13, further comprising:a support structure supporting the reflector and the attenuator, wherein at least a portion of the support structure is made of dielectric substance. 22. The antenna assembly of claim 13, further comprising:a feeder connected to the radiators to facilitate transmitting the radio wave signals, wherein a cable of the feeder is shielded by a conductive mesh. 23. An antenna assembly for a wireless communications system, the antenna assembly comprising:a plurality of radiators transmitting signals; a reflecting member having the radiators mounted thereto and reflecting the signals; and an attenuating member mounted behind the reflecting member with a gap therebetween, the attenuating member comprising a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate. 24. The antenna assembly of claim 23, wherein the reflecting member comprises a main plate and a wing extending from each longitudinal edge thereof, each wing comprising an inner portion and an outer portion, the inner portion at an obtuse angle with respect to the main plate and the outer portion substantially perpendicular to the main plate.25. The antenna assembly of claim 24, wherein the obtuse angle of the reflecting member is the same as the obtuse angle of the attenuating member.26. The antenna assembly of claim 25, wherein the inner portion of the wing of the reflecting member and the wing of the attenuating member are of the same width.27. The antenna assembly of claim 26, wherein the antenna structure further comprises a second attenuating member mounted behind the attenuating member with a gap therebetween.28. The antenna assembly of claim 27, wherein the gap between the reflecting member and the attenuating member is equal to the gap between the attenuating member and second attenuating member.29. The antenna assembly of claim 27, wherein the second attenuating member comprises a main plate and a wing extending from each longitudinal edge thereof, the wing an obtuse angle with respect to the main plate.30. The antenna assembly of claim 29, wherein the obtuse angle of the second attenuating member is the same as the obtuse angles of the reflecting member and the attenuating member.31. The antenna assembly of claim 23, further comprising:a support structure supporting the reflecting member and the attenuating member, wherein at least a portion of the support structure is made of dielectric substance. 32. The antenna assembly of claim 23, further comprising:a feeder connected to the radiators to facilitate transmitting the signals, wherein a cable of the feeder is shielded by a conductive mesh. 33. A wireless communications system having a base station connected to a communications network and linked with mobile stations via an air interface, the system comprising:an antenna assembly providing a signal link between the communications network and the mobile stations, the antenna assembly comprising: an antenna structure comprising a plurality of radiators mounted in front of a reflecting member, the reflecting member comprising a main plate and a wing extending from each longitudinal edge thereof, each wing comprising an inner portion and an outer portion, the inner portion at an obtuse angle with respect to the main plate and the outer portion substantially perpendicular to the main plate; at least one attenuating member mounted behind the reflecting member with a gap therebetween; a support structure connected to and supporting the antenna structure; and a feeder connected to the radiators to facilitate transmitting and receiving signals via the antenna structure. 34. The wireless communications system of claim 33, wherein the attenuating member comprises a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate.35. The wireless communications system of claim 33, wherein the antenna structure further comprises a first attenuating member and a second attenuating member, the first attenuating member mounted behind the reflecting member with a gap therebetween and the second attenuating member mounted behind the first attenuating member with a gap therebetween.36. The wireless communications system of claim 35, wherein the gap between the reflecting member and the first attenuating member is equal to the gap between the first and second attenuating members.37. The wireless communications system of claim 36, wherein the second attenuating member comprises a main plate and a wing extending from each longitudinal edge thereof, the wing at an obtuse angle with respect to the main plate.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Oh Jung Kun,KRX ; Lee Yong Hee,KRX ; Lee Jae Ho,KRX ; Kim Jung Sik,KRX ; Oh Byung Ill,KRX, Antenna system having a choke reflector for minimizing sideward radiation.
Butland Roger J. (47 John Sims Drive Boadmeadows ; Wellington NZX) Heinz William E. (47 Beazley Avenue Wellington NZX), Panel antenna having groups of dipoles fed with insertable delay lines for electrical beam tilting and a mechanically ti.
Schneider, Richard E.; Ross, III, John Edwin; Feit, Corey; Picolet, Dale; Stuemke, Chad, Antenna assemblies with tapered loop antenna elements and reflectors.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.