PATENT CLAIM ANALYSIS

Application Number: 15957151
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2018-11
Patent Classification: ["455", "041200"]

Abstract:
A directional characteristic acquisition unit  51  rotates a wireless terminal  1  that is a measurement target using a terminal holding rotation mechanism  30  centering around a standard point O, measures a field intensity Pr of a radio wave received by the measurement antenna  21  at each rotation angle (ϕ, θ) to calculate a virtual directional characteristic of a terminal antenna  1 a  in the wireless terminal  1 . An error information output unit  60  calculates a reception angle error (ϕ′, θ′), a propagation loss error E1, and a gain error E2 that occur in accordance with rotation of the wireless terminal  1 , and corrects a virtual directional characteristic using these errors, using a correction unit  70 , to calculate a directional characteristic Hc in a case where it is assumed that the terminal antenna  1 a  of the wireless terminal  1  is rotated at the position of the standard point O.

Claim (Index 13):
A wireless terminal antenna directional characteristic measurement method comprising:\n a step of rotating, using a point spaced by a predetermined distance from a phase center of a measurement antenna having a known directional characteristic, which is fixed at a predetermined position in a measurement space in which entrance of a radio wave from the outside and internal reflection of the radio wave are suppressed, as a standard point, a wireless terminal that is a measurement target held in the vicinity of the standard point centering around the standard point from a standard position within a region where a distance condition of far field measurement is satisfied from the measurement antenna, and measuring a field intensity or power of a radio wave received by the measurement antenna with respect to the radio wave output from a terminal antenna in the wireless terminal at each rotation angle to acquire a virtual directional characteristic of the terminal antenna; a step of inputting the position of the terminal antenna in a case where the wireless terminal is disposed in the standard position, in the measurement space; a step of outputting respective errors including a reception angle error at each rotation angle of the wireless terminal indicating a deviation between a direction of the standard point and a direction of the terminal antenna from the phase center of the measurement antenna, a propagation loss error in a free space at each rotation angle of the wireless terminal, which occurs due to a difference between a distance to the standard point from the phase center of the measurement antenna and a distance to the terminal antenna, and a gain error of the measurement antenna at each rotation angle of the wireless terminal, which is determined by the reception angle error and the directional characteristic of the measurement antenna, on the basis of the input position of the terminal antenna; and a step of correcting the virtual directional characteristic of the terminal antenna using the output reception angle error, propagation loss error, and gain error at each rotation angle of the wireless terminal to calculate a directional characteristic in a case where it is assumed that the terminal antenna is rotated at the position of the standard point.

Metadata:
- Claim Count in Document: 20.0
- Percentile: 91.0
- Lexical Diversity: 2.0375
- Patent Class: 455.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15187616', '10544166', '10473592', '16076972', '12129896']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.6764340984200656
- 35 USC 102 Novelty (BERT): 0.4619091062615671
- Combined Prediction Score: 0.6549815992042158
- Mean Citation Score: 160.532652
- Max Citation Score: 164.36261000000005
- Similarity Product: 130.84361057497506

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

Dataset: test