RADIO FREQUENCY INTERCONNECT CIRCUITS AND TECHNIQUES
First Claim
1. A printed circuit board assembly comprising:
- a plurality of circuit boards, at least two of said plurality of circuit boards having one or more circuit layers disposed thereon; and
a radio frequency (RF) interconnect having a first portion electrically coupled to at least one circuit layer on a first one of said plurality of circuit boards and having a second portion electrically coupled to at least one circuit layer on a second, different one of said plurality of circuit boards, said RF interconnect having a first RF stub; and
a first RF matching pad electrically coupled to said first RF interconnect, said first RF matching pad disposed on a ground plane layer of one of said plurality of printed circuit boards and said RF matching pad comprising a disc shaped conductive portion coupled to said RF interconnect and a non-conductive relief area provided between the disc shaped conductive portion and the ground plane.
1 Assignment
0 Petitions
Accused Products
Abstract
A multilayer circuit board assembly includes one or more radio frequency (RF) interconnects between different circuit layers on different circuit boards which make up the circuit board assembly. The RF interconnects can include one or more RF matching pads which provide a mechanism for matching impedance characteristics of RF stubs to provide the RF interconnects having desired insertion loss and impedance characteristics over a desired RF operating frequency band. The RF matching pads allow the manufacture of circuit boards having RF interconnects without the need to perform any back drill and back fill operation to remove stub portions of the RF interconnects in the multilayer circuit board assembly.
31 Citations
25 Claims
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1. A printed circuit board assembly comprising:
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a plurality of circuit boards, at least two of said plurality of circuit boards having one or more circuit layers disposed thereon; and a radio frequency (RF) interconnect having a first portion electrically coupled to at least one circuit layer on a first one of said plurality of circuit boards and having a second portion electrically coupled to at least one circuit layer on a second, different one of said plurality of circuit boards, said RF interconnect having a first RF stub; and a first RF matching pad electrically coupled to said first RF interconnect, said first RF matching pad disposed on a ground plane layer of one of said plurality of printed circuit boards and said RF matching pad comprising a disc shaped conductive portion coupled to said RF interconnect and a non-conductive relief area provided between the disc shaped conductive portion and the ground plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A printed circuit board assembly comprising:
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a plurality of circuit boards, each of said plurality of circuit boards having one or more circuit layers; and a first radio frequency (RF) interconnect having a first portion electrically coupled to at least one circuit layer on a first one of said plurality of circuit boards and having a second portion electrically coupled to at least one circuit layer on a second, different one of said plurality of circuit boards, said first RF interconnect having a first RF stub; and a first RF matching pad coupled to said first RF interconnect, said first RF matching pad for matching an impedance characteristics of the first RF stub coupled to said first RF interconnect. - View Dependent Claims (10, 11, 12, 13, 14)
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15. (canceled)
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16. (canceled)
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17. (canceled)
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18. (canceled)
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19. (canceled)
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20. (canceled)
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21. A radio frequency (RF) circuit board comprising:
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a plurality of printed circuit boards coupled to provide a printed circuit board assembly having first and second opposing outermost layers corresponding to RF ground plane layers of the RF circuit board assembly with at least two of said plurality of printed circuit boards having one or more circuit layers disposed thereon; and a radio frequency (RF) interconnect having a first portion electrically coupled to at least one circuit layer on a first one of the at least two of said plurality of circuit boards and having a second portion electrically coupled to at least one circuit layer on a second, different one of said plurality of circuit boards, said RF interconnect having a first portion thereof corresponding to a first RF stub; and a first RF matching pad electrically coupled to said first RF interconnect, said first RF matching pad disposed on a ground plane layer of one of said plurality of printed circuit boards and said RF matching pad comprising a disc shaped conductive portion coupled to said RF interconnect and a non-conductive relief area provided between the disc shaped conductive portion and the ground plane. - View Dependent Claims (22, 23, 24, 25)
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Specification