Tunable resonant circuit comprising a RF resonator geometry disposed on an active material layer such that resonance changes when photon energy is applied

Patent metadata

Field	Value
Publication number	US-11114738-B2
Application number	US-201816101772-A
Country	US
Kind code	B2
Filing date	Aug 13, 2018
Priority date	Sep 19, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Embodiments of the invention provide a resonant circuit including an active material substrate excitable by photon energy. A busline having a single input and a single output is located on the active material substrate. A RF resonator geometry is located on the active material substrate in electrical communication with the busline. Application of photon energy to the active material substrate changes the resonance of the RF resonator geometry at room temperatures. Alternately, a resonant circuit is provided that include a passive material substrate. An active material thin film is located on the passive material substrate. A busline having a single input and a single output and a RF resonator geometry located on the active material thin film. The RF resonator geometry is in electrical communication with the busline. Application of photon energy to the active material thin film changes the resonance of the RF resonator geometry at room temperatures.

First claim

What is claimed is:

1. A resonant circuit comprising:
an active material substrate having a top face;
a busline having a single input and a single output located on the top face of the active material substrate;
a RF resonator geometry located on the top face of the active material substrate in electrical communication with the busline,
wherein application of photon energy to the active material substrate changes the resonance of the RF resonator geometry at room temperatures, and
wherein the RF resonator geometry has a gap, and wherein the photon energy is applied to the gap of the RF resonator geometry, and
wherein the RF resonator geometry comprises split ring resonators (SRRs).

2. The resonant circuit of claim 1 , wherein the active material substrate is selected from a group consisting of: semi-insulating (SI) GaAs, high-resistivity (HR) Si, epitaxial GaAs, epitaxial InAs, and combinations thereof.

3. A resonant circuit comprising:
an active material substrate having a top face;
a busline having a single input and a single output located on the top face of the active material substrate;
a first RF resonator geometry tuned to a first frequency, the first RF resonator geometry located on the top face of the active material substrate in electrical communication with the busline; and
a second RF resonator geometry tuned to a second frequency, the second RF resonator geometry located on the top face of the active material substrate in electrical communication with the busline,
wherein application of photon energy to the active material substrate respectively changes the resonance of the first and second RF resonator geometry at room temperatures,
wherein the first RF resonator geometry has a first gap and the second RF resonator geometry has a second gap,
wherein the photon energy is applied to the first and second gap of the first and second RF resonator geometry, respectively, and
wherein the first and second RF resonator geometry comprise split ring resonators (SRRs).

4. The resonant circuit of claim 3 , wherein the active material substrate is selected from a group consisting of: semi-insulating (SI) GaAs, high-resistivity (HR) Si, epitaxial GaAs, epitaxial InAs, and combinations thereof.

5. A resonant circuit comprising:
a passive material substrate having a top face;
an active material thin film located on the top face of the passive material substrate;
a busline having a single input and a single output located on the active material thin film;
a RF resonator geometry located on the active material thin film in electrical communication with the busline,
wherein application of photon energy to the active material thin film changes the resonance of the RF resonator geometry at room temperatures.

6. The resonant circuit of claim 5 , wherein the RF resonator geometry is a first RF resonator geometry tuned to a first frequency, the resonant circuit further comprising:
a second RF resonator geometry tuned to a second frequency, the second RF resonator geometry located on the active material thin film in electrical communication with the busline;
wherein application of the photon energy to the active material thin film changes the resonance of the second RF resonator geometry at room temperatures.

7. The resonant circuit of claim 6 , wherein the second RF resonator geometry has a respective gap, and wherein the photon energy is applied to the respective gap of the second RF resonator geometry.

8. The resonant circuit of claim 7 , wherein the RF resonator geometry comprises split ring resonators (SRRs).

9. The resonant circuit of claim 5 , wherein the RF resonator geometry has a gap, and wherein the photon energy is applied to the gap of the RF resonator geometry.

10. The resonant circuit of claim 9 , wherein the RF resonator geometry comprises split ring resonators (SRRs).

11. The resonant circuit of claim 5 , wherein the active material thin film is selected from a group consisting of: semi-insulating (SI) GaAs, high-resistivity (HR) Si, epitaxial GaAs, epitaxial InAs, and combinations thereof.

Assignees

• Us Gov Air Force
• Us Air Force

Inventors

• Allen Jeffery
• Allen Monica
• Wasserman Daniel
• Wenner Brett

Classifications

• H10F30/10

  the devices being sensitive to infrared radiation, visible or ultraviolet radiation, and having no potential barriers, e.g. photoresistors · CPC title

• H10F77/00

  Constructional details of devices covered by this subclass (constructional details of integrated devices, or assemblies of multiple devices, comprising at least one element in which radiation controls the flow of current H10F39/00) · CPC title

• G01J5/0802

  Optical filters · CPC title

• G02B5/288

  comprising at least one thin film resonant cavity, e.g. in bandpass filters · CPC title

• G01J5/10

  using electric radiation detectors · CPC title