Patent ID: 8169369

Claim:
A method for generating a location signal, the method comprising: receiving, from a reference device, at least one location signal control parameter that defines linear frequency slope characteristics for a location signal; configuring a frequency generation unit (FGU) to generate a first current having a first magnitude and a first polarity that are based on the at least one location signal control parameter; and for at least one iteration: during a first time period that is set based on the at least one location signal control parameter, charging a capacitive element in the FGU with the first current to generate a first control signal; coupling the first control signal to a voltage controlled oscillator (VCO) to generate a first part of the location signal having the defined linear frequency slope characteristics; and transmitting the first part of the location signal; wherein configuring the FGU comprising operating the FGU as an open loop while generating the location signal; and wherein the at least one location signal control parameter is received over a narrowband channel and the location signal is transmitted over a wideband channel.