Differential loopstick antenna configuration

摘要

A long-wave or medium-wave receiver receives a first signal from a first terminal of a loopstick antenna on a positive antenna input terminal of the receiver and receives a second signal from a second terminal of the loopstick antenna on a negative antenna input terminal of the receiver. The first and second signals are processed differentially in the receiver. The receiver may optionally be configured to operate in either a differential mode or a single-ended mode by setting switches to selectively connect one of the antenna input terminals to ground in single-ended mode.

主权项

1. A method comprising:
operating a front end of a receiver in a single-ended mode or a differential mode with respect to a first and a second antenna input according to settings of a first and a second switch, the first switch disposed between the first antenna input and a reference potential and the second switch disposed between the second antenna input and the reference potential; setting the first and second switch to respectively disconnect the first antenna input and the second antenna input from the reference potential to operate the receiver in the differential mode; and selectively closing the first switch to couple the first antenna input to the reference voltage or selectively closing the second switch to couple the second antenna input to the reference voltage, to configure the front end of the receiver to receive signals from one of a first loopstick antenna coupled at one of the first and second antenna inputs and a second loopstick antenna coupled at the other of the first and second antenna inputs to operate the receiver in the single-ended mode.