Transition between a ridge waveguide and a planar circuit which faces in the same direction

• US 5,969,580 A
• Filed: 09/30/1997
• Issued: 10/19/1999
• Est. Priority Date: 10/01/1996
• Status: Expired due to Fees

• Current Assignee: Alcatel SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Maillet, Olivier, Rattay, Bernard, Cruchon, Jean-Claude
• Primary Examiner(s): LEE, BENNY T
• Application Number:
  US08/941,672
• Time in Patent Office: 749 Days
• Field of Search: 333/26, 333/33
• US Class Current: 333/26
• CPC Class Codes: H01P 5/107 Hollow-waveguide/strip-line transitions

Abstract

The invention relates to a transition between a ridge waveguide and a planar circuit on which a conductor is provided. The transition includes at least one conductive link connecting the end of said ridge to said conductor between two contact points. According to the invention, the contact points face a common access provided for putting the conductive link in place. It is thus possible to implement the contact points industrially, e.g. by means of a thermocompression machine.

Claims

1. A transition between a ridge of a waveguide and a planar circuit on which a conductor is provided, said transition including at least one unitary conductive link directly connected at one end thereof to an end surface of said ridge at a first contact point and directly connected at an opposite end thereof to a surface of said conductor at a second contact point, respectively;

wherein said end surface and said conductor surface face in the same direction so that a common access can be used for putting said conductive link in place.

2. A transition according to claim 1, wherein said planar circuit is a microstrip circuit.

3. A transition according to claim 1, wherein said planar circuit is a coplanar circuit.

4. A transition according to claim 1, wherein said planar circuit is a coplanar circuit with a ground plane.

5. A transition according to claim 1, wherein said planar circuit is a suspended micro-strip circuit.

6. A transition according to claim 1, wherein said planar circuit is placed in a segment where a signal frequency is below a waveguide cutoff frequency of said waveguide.

7. A transition according to claim 1, wherein said contact points are thermocompressed contact points.

8. A transition according to claim 1, including a sealing window placed in said waveguide.

9. A transition according to claim 1, wherein said ridge includes an impedance transformer.

10. A transition according to claim 9, wherein said ridge is set back from a wall of the waveguide on which said planar circuit stands.

11. A transition according to claim 9, wherein said ridge is provided with a recess therein.

12. A transition between a ridge of a waveguide and a planar circuit on which a conductor is provided, said transition including at least one unitary conductive link directly connected at one end thereof to an end of said ridge at a first contact point and directly connected at an opposite end thereof to said conductor at a second contact point, respectively;

wherein said contact points face in the same direction so that a common access can be used for putting said conductive link in place; and

wherein said ridge is set back from a wall of the waveguide on which said planar circuit stands.