Controlling remote antenna systems
Techniques for controlling remote antenna systems. An example method of receiving radio frequency signals with a remote antenna module includes providing a first signal to a remote receiver on a conductor, receiving a control signal from the remote receiver on the conductor, wherein the control signal is a bias voltage on the conductor, and providing a second signal on the conductor in response to receiving the control signal.
1. A remote antenna module, comprising:
one or more antenna submodules, wherein the one or more antenna submodules includes at least one antenna and a filter circuit for a global navigation satellite system;
a controller communicatively coupled to the one or more antenna submodules; and
a single conductor operably coupled to the one or more antenna submodules and the controller, wherein the single conductor is configured and coupled to provide radio frequency signals from the one or more antenna submodules to a remote processing unit, and receive a control signal from the remote processing unit, wherein the control signal comprises a bias voltage value on the single conductor.
2. The remote antenna module of claim 1 wherein the controller includes a plurality of comparators configured to detect the bias voltage value and a control circuit configured to provide a controller signal to at least one of the one or more antenna submodules based on the bias voltage value.
3. The remote antenna module of claim 1 wherein the controller includes an analog to digital converter circuit to detect the bias voltage value and a control circuit configured to provide a controller signal to at least one of the one or more antenna submodules based on the bias voltage value.
4. The remote antenna module of claim 1 wherein the controller is configured to vary a state of a low noise amplifier in at least one of the one or more antenna submodules based on the control signal.
5. The remote antenna module of claim 1 wherein the controller is configured to vary a state of a variable tuning element in at least one of the one or more antenna submodules based on the control signal.
6. The remote antenna module of claim 1 wherein the controller is configured to vary a state of a radio frequency filter in at least one of the one or more antenna submodules based on the control signal.
7. The remote antenna module of claim 1 wherein the controller is configured to vary a beam angle of an antenna array in at least one of the one or more antenna submodules based on the control signal.
8. The remote antenna module of claim 1 wherein the controller is configured to vary a physical orientation of an antenna in at least one of the one or more antenna submodules based on the control signal.
9. The remote antenna module of claim 1 further comprising a modulator communicatively coupled to the controller and configured to modulate the radio frequency signals from the one or more antenna submodules to provide a feedback signal to the remote processing unit.
10. The remote antenna module of claim 1 wherein the one or more antenna submodules includes at least one antenna and a radio frequency front-end associated with a wireless wide area network.
11. The remote antenna module of claim 10 wherein the wireless wide area network is a cellular network.
12. The remote antenna module of claim 1 wherein the one or more antenna submodules includes at least one antenna and a radio frequency front-end associated with a wireless local area network.
13. The remote antenna module of claim 12 wherein the wireless local area network utilize a WiFi protocol.
14. The remote antenna module of claim 1 further comprising a multiplexer communicatively coupled to the one or more antenna submodules and the controller, wherein the multiplexer is configured to multiplex signals from the one or more antenna submodules and provide a synthesized signal to the remote processing unit.
15. The remote antenna module of claim 1 wherein the one or more antenna submodules is capacitively coupled to the single conductor.