RF system for distribution of over the air content for in-building applications
A system is described for distributing over the air (OTA) channels within buildings and homes. The system can implement one or more active multi-mode antennas for improved performance and reliability. The system can be configured as a mesh network where multiple nodes are distributed to improve the probability of channel capture across the VHF and UHF frequencies used for over the air TV distribution. A node consists of a beam steering antenna that operates at the VHF and UHF frequencies for TV signal reception, a receiver and demodulation circuit, a transcoder to convert the received information for re-distribution, and a transceiver capable of operation at a secondary frequency band for use in re-distributing the information to communication devices in proximity of the node. The secondary frequency band can be the common WLAN (Wireless Local Area Network) system such as Wi-Fi, with the Wi-Fi transceiver also containing beam steering antennas for improved in-building propagation of the re-distributed information.
1. An antenna system, comprising:
an active modal antenna operable to be configured in a plurality of different radiation modes, each radiation mode associated with a distinct radiation pattern, the active modal antenna comprising:
a radiating element positioned relative to a circuit board such that an antenna volume is defined therebetween;
a parasitic element positioned within the antenna volume; and
an active tuning component coupled to the parasitic element; and
a cable communicatively coupled to the active modal antenna, the cable configured be plugged into a wireless local area network router;
wherein the modal antenna is operable to receive RF signals in an over-the-air band and communicate the RF signals to the wireless local area network router via the cable;
wherein the over-the-air band comprises a VHF band and a UHF band.
2. The antenna system of claim 1 , wherein the antenna system is operable to communicate the RF signals via the cable to the wireless local area network router for translation from the over-the-air band to a WiFi band.
3. The antenna system of claim 1 , wherein the VHF band comprises RF signals having a frequency in a range of 30 MHz to 300 GHz.
4. The antenna system of claim 3 , wherein the UHF band comprises RF signals having a frequency in a range of 300 MHz to 3 GHz.
5. The antenna system of claim 1 , wherein the antenna system is operable: to receive RF signals in the over-the-air band from a television transmission tower.
6. The antenna system of claim 2 , wherein the WiFi band comprises RF signals having a frequency in one or more the following bands: 2.4 GHz (802.11 b/g/n), 3.65 GHz (802.11 y), 4.9 GHz (802.11 j), 5 GHz (802.11 a/h/j/n/ac), 5.9 GHz (802.11 p), 60 GHz (802.11 ad), and 900 MHz (802.11 ah).
7. The antenna system of claim 1 , wherein the active tuning component is operable to vary a reactance associated with the parasitic element to vary a current mode associated with the radiating element.
8. A method for communicating RF signals in an over-the-air band with an active modal antenna operable to be configured in a plurality of different radiation modes, each radiation mode associated with a distinct radiation pattern, the active modal antenna comprising a radiating element, a parasitic element, and an active tuning element coupled to the parasitic element, the radiation element positioned relative to a circuit board such that an antenna volume is defined therebetween, the parasitic element positioned within the antenna volume, the method comprising:
varying, with the active tuning element, a reactance associated with the parasitic element positioned within the antenna volume to vary a current mode associated with the radiating element;
receiving, by the active modal antenna, RF signals in the over-the-air band;
communicating, via a cable communicatively coupled to the active modal antenna, the RF signals in the over-the-air band to a wireless local area network router;
wherein the over-the-air band comprises a VHF band and a UHF band.
9. The method of claim 8 , wherein communicating, via a cable, the RF signals in the over-the-air band to a wireless local area network router comprises communicating, via the cable, the RF signals in the over-the-air band to the wireless local area network router for translation to a WiFi band.
10. The method of claim 8 , wherein the VHF band comprises RF signals having a frequency in a range of 30 MHz to 300 MHz.
11. The method of claim 10 , wherein the UHF band comprises RF signals having a frequency in a range of 300 MHz to 3 GHz.
12. The method of claim 8 , wherein the RF signal in the over-the-air band are received from a television transmission tower.
13. The method of claim 9 , wherein the WiFi band comprises RE signals having a frequency in one or more the following bands: 2.4 GHz (802.11 b/g/n), 3.65 GHz (802.11 y), 4.9 GHz (802.11 j), 5 GHz (802.11 a/h/j/n/ac), 5.9 GHz (802.11 p), 60 GHz (802.11 ad), and 900 MHz (802.11 ah).
14. The method of claim 8 , wherein the cable is plugged into the wireless local area network router.