摘要:
A method is presented for changing a frequency of a first local oscillator in a receiving system, which has a first receiver with the first local oscillator and a first frequency control element and a second receiver with a second local oscillator and a second frequency control element. The method is characterized in that the following steps are performed during a change in a frequency of the first local oscillator from an actual frequency of the first local oscillator to a target frequency, at which an actual frequency of the second local oscillator lies between the actual frequency of the first local oscillator and the target frequency: turning off the first local oscillator, control of the first frequency control element such that the first frequency control element provides a first base value, assigned to the target frequency, of a frequency control variable, turning on the first local oscillator, and setting of the frequency of the first local oscillator to the target frequency. Furthermore, a receiving system is presented.
摘要:
An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided. The antenna amplifier includes a first signal input and a second signal input for connecting antennas, a first amplifier circuit connected to the first signal input and having a first digital control signal input for receiving a first digital control signal for setting an amplification of the first amplifier circuit and a first signal output, a second amplifier circuit connected to the second signal input and having a second digital control signal input for receiving a second digital control signal for setting an amplification of the second amplifier circuit and a second signal output, a summator connected to the first signal output and the second signal output for outputting a sum signal to a sum signal output, and a digital gain controller with a digital command signal input for receiving a digital command signal and a digital control signal output for outputting the first digital control signal and the second digital control signal.
摘要:
An antenna amplifier, receiving system, operating method, and use of a receiving system, is provided. The antenna amplifier includes a first signal input and a second signal input for connecting antennas, a first amplifier circuit connected to the first signal input and having a first digital control signal input for receiving a first digital control signal for setting an amplification of the first amplifier circuit and a first signal output, a second amplifier circuit connected to the second signal input and having a second digital control signal input for receiving a second digital control signal for setting an amplification of the second amplifier circuit and a second signal output, a summator connected to the first signal output and the second signal output for outputting a sum signal to a sum signal output, and a digital gain controller with a digital command signal input for receiving a digital command signal and a digital control signal output for outputting the first digital control signal and the second digital control signal.