The invention concerns a device for RF/IF or IF/RF frequency agility translation.
Such frequency agility enhances the communication capability of a wireless sensor network in a harsh RF environment.
The circuit allows frequency agility of a phase locked loop although locked to a common reference frequency.
Adaptive frequency agility in a body area network (BAN) is enabled by a medium access control protocol by adaptively snooping channels of a frequency band utilized in the BAN.
For example, frequency agile radar emitters may be detected and/or classified to using techniques described herein.
Each frequency agile transponder (34) includes a transmitter (T) and a receiver (R) which are connectable to a coaxial line of the HFC network (2).
The frequency agile transponder (34) can test the test points and supply to the controller (12) the results of the test.
Bidirectional communications can occur between a controller (12) and each frequency agile transponder (34) via the HFC network (2).
The plurality of frequency agile transceivers aoperate simultaneously, each transceiver being coupled to the antenna for communication via a respective directional beam.
A frequency agile voltage controlled oscillator is provided in which amplitude control is performed by digitally controlling the current supplied to the oscillator from a current source (10).
The frequency agile transponder (34) has analog inputs/outputs connectable to test points of the one or more pieces of equipment (14, 20, 24) of the HFC network (2).
One or more pieces of equipment of a hybrid fiber-coaxial (HFC) network (2) has a frequency agile transponder (34) connected thereto.
The reverse band modulators are frequency agile and modulate telephony signals from a subscriber in a selected one or more frequency subbands in the reverse band of the subscription network.