What is claimed is:
1. An electromagnetic coupling comprising:
a first conductor;
a conductive enclosure enclosing a cavity, wherein the first conductor is inserted into the cavity through a first opening in the enclosure;
a ground plane within the cavity, the ground plane and the conductive enclosure defining a resonant slot therebetween, wherein the first conductor is electrically connected to the ground; and
a second conductor inserted into the cavity through a second opening in the enclosure;
wherein the conductors are on respective opposite sides of the ground plane within the cavity; and
wherein the first and second conductors are electromagnetically coupled with one another via the ground plane and the resonant slot.
2. The electromagnetic coupling of claim 1, wherein the second conductor is substantially perpendicular to the first conductor.
3. The electromagnetic coupling of claim 1, wherein the first conductor is an inner conductor of a coaxial cable.
4. The electromagnetic coupling of claim 3, wherein an outer conductor of the coaxial cable is attached to at least a part of the conductive enclosure.
5. The electromagnetic coupling of claim 1, wherein the second conductor is attached to an insulator substrate which is enclosed by a ground conductor.
6. The electromagnetic coupling of claim 5, wherein the ground conductor is attached to at least a part of the conductive enclosure.
7. The electromagnetic coupling of claim 1, wherein the second conductor is part of a stripline.
8. The electromagnetic coupling of claim 7, wherein the stripline is a suspended air stripline.
9. The electromagnetic coupling of claim 1, wherein the ground plane is electrically conducted to the conductive enclosure.
10. The electromagnetic coupling of claim 1, wherein the coupling includes a first connector coupled to a second connector; wherein the first connector includes the first conductor and a first part of the enclosure; and wherein the second connector includes the second conductor and a second part of the enclosure.
11. The electromagnetic coupling of claim 10, wherein one of the connectors includes a connection plate for linking the connectors together.
12. The electromagnetic coupling of claim 1, wherein the cavity is a substantially cylindrical cavity.
13. The electromagnetic coupling of claim 12, wherein the extends most of the way along an outer border of the cavity.
14. The electromagnetic coupling of claim 13, wherein the slot has a substantially annular shape.
15. The electromagnetic coupling of claim 12, wherein the cavity preserves a coaxial transverse electromagnetic (TEM) wave mode in the first conductor
16. The electromagnetic coupling of claim 1, further comprising a rotational coupling operatively configured to allow the first conductor to rotate relative to the second conductor.
17. The electromagnetic coupling of claim 16, wherein the rotational coupling is a gimbal coupling a first part of the conductive enclosure to a second part of the conductive enclosure.
18. The electromagnetic coupling of claim 1, wherein the first conductor is soldered to the ground plane.
19. The electromagnetic coupling of claim 1 as part of a missile antennae system.
20. An electromagnetic coupling comprising:
a first conductor;
a conductive enclosure enclosing a cavity, wherein the first conductor is inserted into the cavity through a first opening in the enclosure;
a ground plane within the cavity, the ground plane and the conductive enclosure defining a resonant slot therebetween, wherein the first conductor is electrically connected to the ground;
a second conductor inserted into the cavity through a second opening in the enclosure;
a first connector that includes the first conductor and a first part of the enclosure; and
a second connector that includes the second conductor and a second part of the enclosure;
wherein the conductors are on respective opposite sides of the ground plane within the cavity;
wherein the first and second conductors are electromagnetically coupled with one another via the ground plane and the resonant slot;
wherein the second conductor is substantially perpendicular to the first conductor.
21. An electromagnetic coupling comprising:
a first conductor;
a second conductor that is substantially perpendicular to the first conductor; and
means for contactlessly electromagnetically coupling the first conductor and the second conductor.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system, comprising:
an external network operable to provide network communication services;
a user local area network operable to provide local area network communication services;
a commercially available customer premise equipment (CPE) device operable to provide packet based telephony and data services through the external network, communication with local devices through the user local area network, and communication with plain old telephone service (POTS) devices through in home twisted pair wiring, the CPE device being operable to establish voice communication between a user of a local POTS device and a remote POTS device, and after voice communication is established, to receive input from the POTS device to establish a video connection between a local user associated with the local POTS device and a remote user associated with the remote POTS device;
a local computing device operable communicate over the user local area network and receive a request from the CPE device to initiate a video session, and to display video information on a display device in response to the request, wherein video information is received from the CPE device through the user local area network, and the local computing device is further operable to capture and provide packet video information to the CPE device through the user local area network; and
wherein the CPE device is operable to provide a videophone service to the local user based on the combination of the local computing device and local POTS device by modifying only its operating software image and providing the voice session to the local POTS device and the video session to the local computing device over the user local area network responsive to a request to instantiate the session receive from the local user through the local POTS device.
2. The system of claim 1, wherein the voice portion of the videophone service received by the CPE device is reproduced on a speaker associated with a standard phone attached to the CPE device.
3. The system of claim 1, wherein the voice portion of the videophone service received by the CPE device is transmitted as a packet through the user network to the local device and reproduced on an external speaker or the display device.
4. The system of claim 1, wherein access to the external network is provided by a DOCSIS cable access network, digital line subscriber (DSL) access network, or fiber optics based access network.
5. The system of claim 1, wherein the user network comprises a wireless network.
6. The system of claim 1, wherein the user network comprises a wired network.
7. The system of claim 1, wherein a external image device is interfaced to the local device to provide video images to the local device.
8. The system of claim 7, wherein the user network is based on MoCA (Multimedia over Cable Alliance).
9. One or more non-transitory computer-readable media having instructions stored thereon, the one or more computer readable media, when executed by a processor to perform operations comprising:
upgrading an operating software image on a deployed customer premise equipment (CPE) device to provide a videophone services, the deployed CPE device being incapable of providing videophone services prior to the upgrade;
establishing a packet based telephony service between a first CPE device and a second CPE device over an external network;
requesting a packet based videophone service from the first CPE device to the second CPE device over the external network;
notifying the first CPE device if the videophone service is accepted or rejected from the second CPE device; and
establishing a videophone service between the first and second CPE devicess.
10. The one or more computer-readable media of claim 9, wherein one or more sessions are used to provide the videophone service.
11. The one or more computer-readable media of claim 10, wherein QoS parameters for the one or more sessions are renegotiated after the telephony service has been established.
12. The one or more computer-readable media of claim 11, wherein a session initiation protocol (SIP) is used to renegotiate the one or more session QoS parameters.
13. The one or more computer-readable media of claim 11, wherein a H.232 protocol is used to re-negotiate the one or more session QoS parameters.
14. The one or more computer-readable media of claim 9, wherein the audio and video information is synchronized prior to transmission on the external network.
15. The one or more computer-readable media of claim 9, wherein the audio and video information received from the external network is synchronized when the audio information is heard on an attached telephone.
16. The one or more computer-readable media of claim 9, wherein a videophone session is initiated through the keypad on a standard telephone.