Slotted waveguide antenna and array

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(11)

EP 0 257 881 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.09.1989 Bulletin 1989/38

(43)	Date of publication A2:
	02.03.1988 Bulletin 1988/09

(21)	Application number: 87306986.8

(22)	Date of filing: 06.08.1987

(51)	International Patent Classification (IPC)⁴: H01Q 13/08

(84)	Designated Contracting States:
	DE GB IT

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Priority:

29.08.1986 GB 8620882

(71)	Applicant: DECCA LIMITED
	Bracknell Berkshire RG12 1RG (GB)

(72)	Inventor:
	Chua, Lye Whatt East Horsley Surrey KT24 5RU (GB)

(74)	Representative: Cross, Rupert Edward Blount et al
	BOULT, WADE & TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)

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References cited: :

(54)	Slotted waveguide antenna and array

(57) An antenna is formed with a hollow waveguide (1) having a narrow slot (2) in one face. A Vivaldi horn type radiator (5) is mounted with a coupling arrangement (3, 4) to couple energy in the waveguide through the slot to the radiator. The slot can be a non-radiating longitudinal slot, parallel to the waveguide axis, and several radiators may be mounted in a non-resonant slot along the length of the waveguide to form a linear resonant array.

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