Antenna with distributed strip and integrated electronic components

• US 7,408,512 B1
• Filed: 05/02/2006
• Issued: 08/05/2008
• Est. Priority Date: 10/05/2005
• Status: Active Grant

• Current Assignee: National Technology & Engineering Solutions Of Sandia LLC (Honeywell International Inc.)
• Original Assignee: Sandia Corporation (Martin Marietta Corporation)
• Inventors: Rodenbeck, Christopher T., Payne, Jason A., Ottesen, Cory W.
• Primary Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US11/415,931
• Time in Patent Office: 826 Days
• Field of Search: 343/895, 343/700.MS, 343/702, 343/767, 343/749, 343/830, 343/846
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/2208 associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems methods or arrangements for sensing record carriers, e.g. for reading patterns G06K7/00; record carrier for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H05K 1/16 incorporating printed electric components, e.g. printed resistor, capacitor, inductor

Abstract

An antenna comprises electrical conductors arranged to form a radiating element including a folded line configuration and a distributed strip configuration, where the radiating element can be in proximity to a ground conductor and/or arranged as a dipole. Embodiments of the antenna include conductor patterns formed on a printed wiring board, having a ground plane, spacedly adjacent to and coplanar with the radiating element. An antenna can comprise a distributed strip patterned on a printed wiring board, integrated with electronic components mounted on top of or below the distributed strip, and substantially within the extents of the distributed strip. Mounting of electronic components on top of or below the distributed strip has little effect on the performance of the antenna, and allows for realizing the combination of the antenna and integrated components in a compact form. An embodiment of the invention comprises an antenna including a distributed strip, integrated with a battery mounted on the distributed strip.

Claims

1. An antenna comprising:

a dielectric substrate having a first surface and an opposed second surface;

a first radiating element comprising,

a first electrical conductor having a first width disposed on the first surface of the dielectric substrate, the first electrical conductor arranged in a folded line configuration; and

,

a second electrical conductor having a second width disposed on a surface of the dielectric substrate, the second width of the second electrical conductor greater than the first width of the first electrical conductor, the second electrical conductor electrically connected to the first electrical conductor, the second electrical conductor laterally separated from the first electrical conductor, the second electrical conductor arranged in a distributed strip configuration, the distributed strip configuration having outer extents; and

,

one or more electronic components mounted on at least one surface of the dielectric substrate, substantially within the outer extents of the distributed strip configuration.

2. The antenna of claim 1 wherein the one or more electronic components are selected from the group consisting of a battery, a resistor, a capacitor, an inductor, a transistor, a diode, an integrated circuit, a filter, a resonator, a solar cell, an electromagnetic induction pad and, a second radiating element.

3. The antenna of claim 2 wherein the first radiating element is operatively arranged to have a first resonant frequency and the second radiating element is operatively arranged to have a second resonant frequency.

4. The antenna of claim 3 wherein the first resonant frequency is equal to the second resonant frequency.

5. The antenna of claim 3 wherein the first resonant frequency is not equal to the second resonant frequency.

6. The antenna of claim 2 wherein the battery comprises one or more batteries selected from the group consisting of a lithium-ion battery, a nickel-cadmium battery, a prismatic battery, a thin-film battery, a cylindrical cell battery and a coin cell battery.

7. The antenna of claim 1 wherein the one or more electronic components are mounted on the at least one surface of the dielectric substrate by one or more mounts selected from the group consisting of an adhesive, a tape, a solder, an encapsulant, an over-mold and a clamp.

8. The antenna of claim 1 wherein the one or more electronic components are operatively arranged to provide an electrical signal to the radiating element of the antenna.

9. The antenna of claim 8 wherein the electrical signal comprises a frequency within the range from about 100 MHz to about 200 GHz.

10. The antenna of claim 1 wherein at least a portion of the antenna is encapsulated in a dielectric medium.

11. The antenna of claim 10 wherein the dielectric medium comprises one or more dielectric mediums selected from the group consisting of a polymer, a glass, a ceramic, a glass-ceramic and a composite material.

12. The antenna of claim 1 wherein the dielectric substrate comprises one or more dielectric substrates selected from the group consisting of a ceramic, a glass-ceramic, a low temperature co-fired ceramic, a polymer, a glass-polymer composite, a resin material, a fiber-reinforced composite, a printed wiring board composition, an epoxy-glass composite, an epoxy-polyimide composite, a polyamide, a fluoropolymer, a polyether ether ketone, a polydimethylsiloxane, a textile and, an insulated metal substrate.

13. The antenna of claim 1 wherein the folded line configuration comprises one or more conductors arranged in a pattern selected from the group consisting of a spiral, a serpentine, a meander, and a helix.

14. The antenna of claim 1 wherein the first radiating element comprises a resonant wavelength of λ

and, the first radiating element comprises a length ≦

½

λ

.

15. The antenna of claim 14 wherein the length of the first radiating element is ≦

¼

λ

.

16. The antenna of claim 1 wherein the second width of the second electrical conductor is at least ten times greater than the first width of the first electrical conductor.

17. The antenna of claim 1 further comprising a ground conductor, the ground conductor laterally separated from and electrically coupled to, the radiating element comprising the first conductor and the second conductor.

18. The antenna of claim 17 wherein the ground conductor is disposed on at least one surface of the dielectric substrate.

19. The antenna of claim 18 wherein, the ground conductor comprises a ground plane configuration having outer extents and, further comprising one or more electrical components mounted on one or more surfaces of the dielectric substrate, substantially within the outer extents of the ground plane.

20. The antenna of claim 1 wherein the one or more electronic components comprises a battery and, the second electrical conductor comprises a pole of the battery.

21. The antenna of claim 1 comprising at least one radiating element configured as a dipole.

22. An antenna comprising:

a printed wiring board having a first surface and an opposed second surface;

a first radiating element disposed on the first surface of the printed wiring board, the first radiating element comprising,

a first electrical conductor having a first width, the first electrical conductor arranged in a folded line configuration; and

,

a second electrical conductor having a second width, the second width of the second electrical conductor greater than the first width of the first electrical conductor, the second electrical conductor electrically connected to the first electrical conductor, the second electrical conductor arranged in a distributed strip configuration, the distributed strip configuration having first outer extents;

a ground conductor disposed on the first surface of the printed wiring board, the ground conductor laterally separated from the first and second electrical conductors, the ground conductor arranged in a ground plane configuration, the ground plane configuration having second outer extents;

at least one battery mounted on the second surface of the dielectric substrate, substantially within the first outer extents of the distributed strip configuration; and

,

at least one electronic component mounted on the second surface of the dielectric substrate, substantially within the second outer extents of the ground plane configuration.

23. An antenna comprising:

a printed wiring board having a first surface and an opposed second surface;

a first radiating element disposed on the first surface of the printed wiring board, the first radiating element comprising,

a first electrical conductor having a first width, the first electrical conductor arranged in a folded line configuration; and

,

a second electrical conductor having a second width, the second width of the second electrical conductor greater than the first width of the first electrical conductor, the second electrical conductor electrically connected to the first electrical conductor, the second electrical conductor arranged in a distributed strip configuration, the distributed strip configuration having first outer extents;

a ground conductor disposed on the first surface of the printed wiring board, the ground conductor laterally separated from the first and second electrical conductors, the ground conductor arranged in a ground plane configuration, the ground plane configuration having second outer extents; and

,

a battery mounted on the first surface of the dielectric substrate, a pole of the battery comprising the second electrical conductor.

24. The antenna of claim 23 comprising at least one electronic component mounted on a surface of the printed wiring board, substantially within one or more extents selected from the group consisting of the first outer extents and, the second outer extents.