PATENT CLAIM ANALYSIS

Application Number: 15964054
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-12
Patent Classification: ["343", "771000"]

Abstract:
A waveguide slotted array antenna comprises a feed layer and a radiation layer, wherein the feed layer is located below the radiation layer, and the radiation layer comprises a first radiation unit, a second radiation unit, a third radiation unit and a fourth radiation unit which are stacked from bottom to top; the first radiation unit comprises a first flat metal plate and a first radiation array arranged on the first flat metal plate, the second radiation unit comprises a second flat metal plate and a second radiation array arranged on the second flat metal plate, the third radiation unit comprises a third flat metal plate and a third radiation array arranged on the third flat metal plate, and the fourth radiation unit comprises a fourth flat metal plate and a fourth radiation array arranged on the fourth flat metal plate. The waveguide slotted array antenna has the advantages of low sidelobes and low cost while ensuring broad bands and high gains, and can be made small.

Claim (Index 3):
The waveguide slotted array antenna according to  claim 2 , wherein each rectangular waveguide-single ridge waveguide converter comprises a first rectangular metal block, wherein a rectangular waveguide input port and a first rectangular cavity are sequentially formed in the first rectangular metal block from front to back,\n wherein the rectangular waveguide input port is formed in the lower end face of the first rectangular metal block, the vertical central line of the first rectangular metal block coincides with the central axis of the rectangular waveguide input port after anticlockwise rotating by 45 degrees, the rectangular waveguide input port is communicated with the first rectangular cavity, and the length of the rectangular waveguide input port is equal to that of the first rectangular cavity, wherein a first E-plane step and a second E-plane step are arranged in the first rectangular cavity and located over the rectangular waveguide input port, wherein the upper end face of the first E-plane step is located on the same plane with the upper side wall of the first rectangular cavity, the lower end face of the first E-plane step is connected with the upper end face of the second E-plane step in an attached mode, the front end face of the first E-plane step is connected with the front side wall of the first rectangular cavity, and the rear end face of the first E-plane step is connected with the rear side wall of the first rectangular cavity, wherein the front end face of the second E-plane step is connected with the front side wall of the first rectangular cavity, and the rear end face of the second E-plane step is connected with the rear side wall of the first rectangular cavity, wherein the width of the first E-plane step is smaller than that of the rectangular waveguide input port, the width of the second E-plane step is smaller than that of the first E-plane step, and the length of the first E-plane step is equal to that of the second E-plane step and also equal to that of the rectangular waveguide input port, wherein a first H-plane step is arranged on the right side of the first rectangular cavity and connected with the right side wall and the front side wall of the first rectangular cavity, and the height of the first H-plane step is equal to that of the first rectangular cavity, wherein a single ridge waveguide output port extending to the first rectangular cavity is formed in the rear end face of the first rectangular metal block, and the single ridge waveguide output port is rectangular, wherein the vertical central line of the rectangular waveguide input port coincides with the central axis of the single ridge waveguide output port after anticlockwise rotating by 135 degrees, and the single ridge waveguide output port is communicated with the first rectangular cavity, wherein the height of the single ridge waveguide output port is equal to that of the first rectangular cavity, and the width of the single ridge waveguide output port is smaller than that of the first rectangular cavity, wherein a first ridge stair extending into the first rectangular cavity is arranged at the center of the bottom of the single ridge waveguide output port and comprises a first ridge step and a second ridge step which are connected in sequence, the first ridge step and the second ridge step are both rectangular, the front end face of the first ridge step is located in the first rectangular cavity, the front end face of the second ridge step is connected with the rear end face of the first ridge step in an attached mode, and the rear end face of the second ridge step is flush with the rear end face of the first rectangular metal block, wherein the height of the second ridge step is smaller than that of the single ridge waveguide output port, and the height of the first ridge step is smaller than that of the second ridge step.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 91.0
- Lexical Diversity: 3.35849
- Patent Class: 343.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['10018573', '15311128', '10937621', '12868440', '15591133']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.80704421560999
- 35 USC 102 Novelty (BERT): 0.4873757466712501
- Combined Prediction Score: 0.775077368716116
- Mean Citation Score: 202.65101
- Max Citation Score: 213.53748
- Similarity Product: 169.5907672576189

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test