Tunable electrical component having distributed-element circuit
The disclosure relates to an electrical component, for example, a surface-mount resonator, including a distributed-element circuit disposed on a dielectric base and separated from an electromagnetic field modification member by a gaseous gap, wherein a frequency characteristic of the electrical component can be tuned by positioning the electromagnetic field modification member relative to the distributed-element circuit using an actuator.
1. A surface-mount filter component comprising:
a housing including a dielectric base and a cover;
a host-interface disposed on the housing;
a conductive distributed-element circuit disposed on a surface of the dielectric base, the distributed-element circuit electrically coupled to electrical contacts of the host-interface;
an electromagnetic field modification member movably disposed in the housing and separated from the distributed-element circuit by an air gap;
an actuator coupled to the housing and including a movable member coupled to the electromagnetic field modification member,
wherein a frequency characteristic of the filter component is tunable by positioning the electromagnetic field modification member relative to the distributed-element circuit.
2. The filter component of claim 1 further comprising a ground plane, wherein the dielectric base separates the ground plane and the distributed-element circuit.
3. The filter component of claim 2 further comprising an electromagnetic shield coupled to the ground plane and enclosing the air gap between the distributed-element circuit and the electromagnetic field modification member.
4. The filter component of claim 2 , the electromagnetic field modification member is electrically coupled to the ground plane, wherein movement of the electromagnetic field modification member relative to the distributed-element circuit changes a bandwidth of the frequency characteristic.
5. The filter component of claim 1 , wherein the host-interface is coupled to the dielectric base.
6. The filter component of claim 5 , wherein the host-interface comprises wire-bond contacts disposed on the housing.
7. The filter component of claim 1 , wherein the actuator is a linear actuator.
8. The filter component of claim 1 , wherein the movable member is part of a motor and the actuator comprises a closed-loop controller coupled to the motor and to a position sensor located adjacent the electromagnetic field modification member.
9. The filter component of claim 1 , the electromagnetic field modification member comprises a dielectric, wherein movement of the electromagnetic field modification member relative to the distributed-element circuit changes a center frequency of the frequency response characteristic.
10. A electrical component comprising:
a dielectric base;
a host-interface;
a conductive distributed-element circuit supported on a surface the dielectric base, the distributed-element circuit electrically coupled to the host-interface;
an electromagnetic field modification member separated from the distributed-element circuit by a gap have a dielectric different than the dielectric base;
an actuator including a movable member coupled to the electromagnetic field modification member,
wherein the electromagnetic field modification member is positionable relative to the distributed-element circuit upon actuation of the movable member.
11. The electrical component of claim 10 further comprising a ground plane, wherein the dielectric base separates the ground plane and the distributed-element circuit.
12. The electrical component of claim 11 is a resonator.
13. The electrical component of claim 11 , wherein the host-interface comprises the ground plane disposed on the dielectric base.
14. The electrical component of claim 13 , wherein the host-interface comprises wire bond contacts disposed on an exterior of the electrical component.
15. The electrical component of claim 10 , wherein the movable member is driven by a motor and the actuator comprises a closed-loop controller coupled to the motor and to a sensor located to detect a position of the electromagnetic field modification member.
16. The electrical component of claim 10 , wherein the actuator is a linear actuator.
17. The filter component of claim 10 further comprising an electromagnetic shield enclosing the air gap between the distributed-element circuit and the electromagnetic field modification member.
18. A surface-mount electrical component comprising:
a housing including a dielectric base and a cover;
a host-interface;
a conductive distributed-element circuit disposed on a surface the dielectric base, the distributed-element circuit electrically coupled to electrical contacts of the host-interface;
an electromagnetic field modification member movably disposed in the housing and separated from the distributed-element circuit by an air gap;
an actuator including a movable member coupled to the electromagnetic field modification member, the electromagnetic field modification member positionable in the air gap relative to the distributed-element circuit;
an electromagnetic shield extending between the dielectric base and the electromagnetic field modification member and enclosing the air gap.
19. The electrical component of claim 18 , the electromagnetic field modification member comprises a dielectric, wherein movement of the electromagnetic field modification member relative to the distributed-element circuit changes a characteristic of the electrical component.
20. The electrical component of claim 19 , wherein the movable member is part of a motor and the actuator comprises a closed-loop controller coupled to the motor and to a position sensor located adjacent the electromagnetic field modification member.