Ultra-thin, flexible, broadband low profile planar wire antenna

• US 9,281,571 B2
• Filed: 08/19/2014
• Issued: 03/08/2016
• Est. Priority Date: 08/20/2013
• Status: Active Grant

• Current Assignee: VOXX International Corporation
• Original Assignee: VOXX International Corporation
• Inventors: Tinaphong, Prapan Paul, Zhao, Songling, Rinehart, James K.
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US14/462,775
• Publication Number:
  US 20150054705A1
• Time in Patent Office: 567 Days
• Field of Search: 343/700.MS, 343/815, 343/817, 343/833, 343/834, 343/893, 343/912
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/40 Radiating elements coated with or embedded in protective material
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 5/364 Creating multiple current paths
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40

Abstract

A broadband, low profile, ultra-thin and flexible, planar wire antenna includes an inverted triangular section and a horizontal bar section centered at the apex of the triangular section. Tab elements are provided on opposite ends of the bar section to increase the end effect of the antenna. Furthermore, 45 degree tabbed elements are joined to the top corners of the triangular section and extend in opposite directions therefrom. The tabbed elements added to the triangular section and to the bar section increase the overall electrical length of the antenna to simulate a physically larger size antenna.

Claims

1. A broadband low profile planar wire antenna, which comprises:

an inverted triangular section having outer sloping sides and an apex at least partially defined by the outer sloping sides, the inverted triangular section having an interior area; and

an elongated bar section centered in proximity to the apex of the inverted triangular section, the elongated bar section being formed as an elongated member having a first axial end and a second axial end situated opposite the first axial end;

wherein the inverted triangular section includes, as antenna elements;

a first outer segment and a second outer segment, the first and second outer segments defining the outer sloping sides of the inverted triangular section, each of the first outer segment and the second outer segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the respective first and second outer segments, the first and second outer segments mutually converging in a direction toward the proximate ends thereof such that the proximate ends of the first and second outer segments are electrically coupled together at the apex of the inverted triangular section;

a base segment, the base segment being situated on the inverted triangular section opposite the apex of the inverted triangular section, the base segment being an elongated member and having a center portion, a first axial end and a second axial end situated opposite the first axial end of the base segment, the first axial end of the base segment being in electrical communication with the distal end of the first outer segment, and the opposite second axial end of the base segment being in electrical communication with the distal end of the second outer segment, the first axial end of the base segment at least partially defining a first corner of the inverted triangular section of the antenna, and the second axial end of the base segment at least partially defining a second corner of the inverted triangular section of the antenna; and

at least a first tab segment and a second tab segment situated in proximity respectively to the first corner and the second corner of the inverted triangular section of the antenna, the at least first tab element and the second tab element being provided to help increase the effective electrical length of the antenna.

2. An antenna as defined by claim 1, wherein the inverted triangular section further includes:

a center segment, the center segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the center segment, the center segment being disposed at least partially within the interior area of the inverted triangular section and extending between the apex of the inverted triangular section and the base segment, the proximate end of the center segment being electrically coupled to the proximate ends of the first and second outer segments at the apex of the inverted triangular section, and a portion of the center segment near or at the distal end of the center segment being electrically coupled to the center portion of the base segment.

3. An antenna as defined by claim 1, which further comprises:

a first end segment and a second end segment, each of the first end segment and the second end segment being an elongated member and having a center portion, the first axial end of the bar section being electrically coupled to the center portion of the first end segment, and the second axial end of the bar section being electrically coupled to the center portion of the second end segment, the first end segment and the second end segment being provided to help increase the effective electrical length of the bar section.

4. An antenna assembly, which comprises:

an antenna as defined by claim 1; and

a thin front covering layer and a thin rear covering layer, the antenna being situated between the front covering layer and the rear covering layer, the front covering layer having an outer surface, and the rear covering layer having an outer surface, the outer surface of the front covering layer facing away from the outer surface of the rear covering layer.

5. An antenna assembly as defined by claim 4, wherein the overall thickness of the antenna assembly, measured between the outer surface of the front covering layer and the outer surface of the rear covering layer, is less than about one millimeter.

6. An antenna assembly as defined by claim 4, wherein the front covering layer includes a film which supports the antenna, and wherein the rear covering layer is a layer of paint.

7. An antenna assembly as defined by claim 4, wherein the outer surface of the front covering layer is formed with a first color, and the outer surface of the rear covering layer is formed with a second color, the first color of the outer surface of the front covering layer being different from the second color of the outer surface of the rear covering layer.

8. An antenna assembly as defined by claim 7, which further comprises:

an antenna cable connection housing having a front section and a rear section which mates with the front section of the antenna cable connection housing, the front section of the antenna cable connection housing being disposed on a portion of the front covering layer, and the rear section of the antenna cable connection housing being disposed on a portion of the rear covering layer;

wherein the front section of the antenna cable connection housing has a color which is the same as the first color of the outer surface of the front covering layer, and the rear section of the antenna cable connection housing has a color which is the same as the second color of the rear covering layer.

9. A broadband low profile planar wire antenna, which comprises:

an inverted triangular section having outer sloping sides and an apex at least partially defined by the outer sloping sides, the inverted triangular section having an interior area; and

an elongated bar section centered in proximity to the apex of the inverted triangular section, the elongated bar section being formed as an elongated member having a first axial end and a second axial end situated opposite the first axial end;

wherein the inverted triangular section and elongated bar section include, as antenna elements;

a first outer sloping segment and a second outer sloping segment, the first and second outer sloping segments defining the outer sloping sides of the inverted triangular section, each of the first outer sloping segment and the second outer sloping segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the respective first and second outer sloping segments, the first and second outer sloping segments mutually converging in a direction toward the proximate ends thereof such that the proximate ends of the first and second outer sloping segments are electrically coupled together at the apex of the inverted triangular section;

a first side segment and a second side segment, the first side segment being disposed in parallel with the second side segment, each of the first side segment and the second side segment being an elongated member and having a first axial end and a second axial end situated opposite the first axial end of the respective first and second side segments, the first axial end of the first side segment being electrically coupled to the distal end of the first outer sloping segment, and the first axial end of the second side segment being electrically coupled to the distal end of the second outer sloping segment;

a base segment, the base segment being situated on the inverted triangular section opposite the apex of the inverted triangular section, the base segment being an elongated member and having a center portion, a first axial end and a second axial end situated opposite the first axial end of the base segment, the first axial end of the base segment being electrically coupled to the second axial end of the first side segment, and the opposite second axial end of the base segment being electrically coupled to the second axial end of the second side segment, whereby the second axial end of the first side segment and the first axial end of the base segment together define a first corner of the inverted triangular section of the antenna, and whereby the second axial end of the second side segment and the second axial end of the base segment together define a second corner of the inverted triangular section of the antenna;

a center segment, the center segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the center segment, the center segment being disposed within the interior area of the inverted triangular section and extending between the apex of the inverted triangular section and the base segment, the proximate end of the center segment being electrically coupled to the proximate ends of the first and second outer sloping segments at the apex of the inverted triangular section, and the distal end of the center segment being electrically coupled to the center portion of the base segment;

a first interior angled segment and a second interior angled segment, the first interior angled segment being disposed within the interior area of the inverted triangular section between the first outer sloping segment and the center segment, and the second interior angled segment being disposed within the interior area of the inverted triangular section between the second outer sloping segment and the center segment, each of the first interior angled segment and the second interior angled segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the respective first and second interior angled segments, each of the first interior angled segment and the second interior angled segment extending between the apex of the inverted triangular section and the base segment, the proximate ends of the first interior angled segment and the second interior angled segment being electrically coupled to the proximate ends of the first outer sloping segment, the second outer sloping segment and the center segment at the apex of the inverted triangular section, the distal end of the first interior angled segment being electrically coupled to the first axial end of the base segment at or near the first corner of the inverted triangular section, and the distal end of the second interior angled segment being electrically coupled to the second axial end of the base segment at or near the second corner of the inverted triangular section;

a first tab segment and a second tab segment, the first tab segment being electrically coupled to the second axial end of the first side segment at or near the first corner of the inverted triangular section and extending angularly outwardly from the second axial end of the first side segment generally toward the first axial end of the first side segment to define with the first side segment a first acute angle, the second tab segment being electrically coupled to the second axial end of the second side segment at or near the second corner of the inverted triangular section and extending angularly outwardly from the second axial end of the second side segment generally toward the first axial end of the second side segment to define with the second side segment a second acute angle;

a third tab segment and a fourth tab segment, the third tab segment being electrically coupled to the distal end of the first interior angled segment at or near the first corner of the inverted triangular section and extending angularly outwardly from the first axial end of the base segment to define with the base segment a third acute angle, the fourth tab segment being electrically coupled to the distal end of the second interior angled segment at or near the second corner of the inverted triangular section and extending angularly outwardly from the second axial end of the base segment to define with the base segment a fourth acute angle; and

a first end segment and a second end segment, each of the first end segment and the second end segment being an elongated member and having a center portion, the first axial end of the bar section being electrically coupled to the center portion of the first end segment, and the second axial end of the bar section being electrically coupled to the center portion of the second end segment.

10. An antenna assembly, which comprises:

an antenna as defined by claim 9; and

a thin front covering layer and a thin rear covering layer, the antenna being situated between the front covering layer and the rear covering layer, the front covering layer having an outer surface, and the rear covering layer having an outer surface, the outer surface of the front covering layer facing away from the outer surface of the rear covering layer.

11. An antenna assembly as defined by claim 10, wherein the overall thickness of the antenna assembly, measured between the outer surface of the front covering layer and the outer surface of the rear covering layer, is less than about one millimeter.

12. An antenna assembly as defined by claim 10, wherein the front covering layer includes a film which supports the antenna, and wherein the rear covering layer is a layer of paint.

13. An antenna assembly as defined by claim 10, wherein the outer surface of the front covering layer is formed with a first color, and the outer surface of the rear covering layer is formed with a second color, the first color of the outer surface of the front covering layer being different from the second color of the outer surface of the rear covering layer.

14. An antenna assembly as defined by claim 13, which further comprises:

an antenna cable connection housing having a front section and a rear section which mates with the front section of the antenna cable connection housing, the front section of the antenna cable connection housing being disposed on a portion of the front covering layer, and the rear section of the antenna cable connection housing being disposed on a portion of the rear covering layer;

wherein the front section of the antenna cable connection housing has a color which is the same as the first color of the outer surface of the front covering layer, and the rear section of the antenna cable connection housing has a color which is the same as the second color of the rear covering layer.

15. A broadband low profile planar wire antenna, which comprises:

an inverted triangular section having outer sloping sides and an apex at least partially defined by the outer sloping sides, the inverted triangular section having an interior area;

an elongated bar section centered in proximity to the apex of the inverted triangular section, the elongated bar section being formed as an elongated member having a first axial end and a second axial end situated opposite the first axial end; and

a center-fed reflector, the center-fed reflector being formed as an elongated member and having a first axial end and a second axial end situated opposite the first axial end, the center-fed reflector being situated in proximity to the inverted triangular section opposite the apex thereof and outside the interior area of the inverted triangular section;

wherein the inverted triangular section, elongated bar section and center-fed reflector include, as antenna elements;

a first outer sloping segment and a second outer sloping segment, the first and second outer sloping segments defining the outer sloping sides of the inverted triangular section, each of the first outer sloping segment and the second outer sloping segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the respective first and second outer sloping segments, the first and second outer sloping segments mutually converging in a direction toward the proximate ends thereof such that the proximate ends of the first and second outer sloping segments are electrically coupled together at the apex of the inverted triangular section;

a first side segment and a second side segment, the first side segment being disposed in parallel with the second side segment, each of the first side segment and the second side segment being an elongated member and having a first axial end and a second axial end situated opposite the first axial end of the respective first and second side segments, the first axial end of the first side segment being electrically coupled to the distal end of the first outer sloping segment, and the first axial end of the second side segment being electrically coupled to the distal end of the second outer sloping segment;

a base segment, the base segment being situated on the inverted triangular section opposite the apex of the inverted triangular section, the base segment being an elongated member and having a center portion, a first axial end and a second axial end situated opposite the first axial end of the base segment, the first axial end of the base segment being electrically coupled to the second axial end of the first side segment, and the opposite second axial end of the base segment being electrically coupled to the second axial end of the second side segment, whereby the second axial end of the first side segment and the first axial end of the base segment together define a first corner of the inverted triangular section of the antenna, and whereby the second axial end of the second side segment and the second axial end of the base segment together define a second corner of the inverted triangular section of the antenna;

a center segment, the center segment being an elongated member and having a proximate end and an extended distal end portion situated axially opposite the proximate end of the center segment, the center segment being disposed at least partially within the interior area of the inverted triangular section and extending from the apex of the inverted triangular section to the base segment, the extended distal end portion extending outwardly from the base segment in a direction away from the apex, the proximate end of the center segment being electrically coupled to the proximate ends of the first and second outer sloping segments at the apex of the inverted triangular section, and the center segment being electrically coupled to the center portion of the base segment near the extended distal end portion thereof;

a first interior angled segment and a second interior angled segment, the first interior angled segment being disposed within the interior area of the inverted triangular section between the first outer sloping segment and the center segment, and the second interior angled segment being disposed within the interior area of the inverted triangular section between the second outer sloping segment and the center segment, each of the first interior angled segment and the second interior angled segment being an elongated member and having a proximate end and a distal end situated axially opposite the proximate end of the respective first and second interior angled segments, each of the first interior angled segment and the second interior angled segment extending between the apex of the inverted triangular section and the base segment, the proximate ends of the first interior angled segment and the second interior angled segment being electrically coupled to the proximate ends of the first outer sloping segment, the second outer sloping segment and the center segment at the apex of the inverted triangular section, the distal end of the first interior angled segment being electrically coupled to the first axial end of the base segment near or at the first corner of the inverted triangular section, and the distal end of the second interior angled segment being electrically coupled to the second axial end of the base segment near or at the second corner of the inverted triangular section;

a first tab segment and a second tab segment, the first tab segment being electrically coupled to the center-fed reflector at or near the first axial end thereof and being situated in proximity to the first corner of the inverted triangular section and extending angularly outwardly from the center-fed reflector to define with the center-fed reflector a first angle, the second tab segment being electrically coupled to the center-fed reflector at or near the second axial end thereof and being situated in proximity to the second corner of the inverted triangular section and extending angularly outwardly from the center-fed reflector to define with the center-fed reflector a second angle; and

a third tab segment and a fourth tab segment, the third tab segment being electrically coupled to the center-fed reflector at or near the first axial end thereof and extending angularly outwardly from or near the first axial end of the center-fed reflector away from the inverted triangular section and in an opposite direction from which the first tab segment extends and defining with the center-fed reflector a third acute angle, the fourth tab segment being electrically coupled to the center-fed reflector at or near the second axial end thereof and extending angularly outwardly from or near the second axial end of the center-fed reflector away from the inverted triangular section and in an opposite direction from which the second tab segment extends and defining with the center-fed reflector a fourth acute angle.

16. An antenna assembly, which comprises:

an antenna as defined by claim 15; and

a thin front covering layer and a thin rear covering layer, the antenna being situated between the front covering layer and the rear covering layer, the front covering layer having an outer surface, and the rear covering layer having an outer surface, the outer surface of the front covering layer facing away from the outer surface of the rear covering layer.

17. An antenna assembly as defined by claim 16, wherein the overall thickness of the antenna assembly, measured between the outer surface of the front covering layer and the outer surface of the rear covering layer, is less than about one millimeter.

18. An antenna assembly as defined by claim 16, wherein the front covering layer includes a film which supports the antenna, and wherein the rear covering layer is a layer of paint.

19. An antenna assembly as defined by claim 16, wherein the outer surface of the front covering layer is formed with a first color, and the outer surface of the rear covering layer is formed with a second color, the first color of the outer surface of the front covering layer being different from the second color of the outer surface of the rear covering layer.

20. An antenna assembly as defined by claim 19, which further comprises:

an antenna cable connection housing having a front section and a rear section which mates with the front section of the antenna cable connection housing, the front section of the antenna cable connection housing being disposed on a portion of the front covering layer, and the rear section of the antenna cable connection housing being disposed on a portion of the rear covering layer;

wherein the front section of the antenna cable connection housing has a color which is the same as the first color of the outer surface of the front covering layer, and the rear section of the antenna cable connection housing has a color which is the same as the second color of the rear covering layer.