Abstract: An electronic device may include a transceiver, an antenna, and a front end module (FEM) coupled between the transceiver and antenna. Components on the FEM may operate on radio-frequency signals. The FEM may include a digital controller with a leakage management engine. The leakage management engine may monitor power supply voltages received by the FEM. In response to detection of a trigger condition, the leakage management engine may power off a set of the components while at least some of the FEM remains powered on. The trigger condition may be a change in the power supply voltages or a host command received from a host processor. Using the leakage management engine to power off the set of front end components may serve to minimize leakage current on the FEM, thereby maximizing battery life and shelf life for the device, without the use of bulky and expensive external load switches.

Abstract: Systems and methods for performing automatic frequency control are provided. Instead of relying on individual frequency tuners for each channel of a multi-channel receiver system, the present subject matter uses a single frequency tuner for receiving each channel of the multi-channel receiver system. A locked demodulator may be designated as a reference demodulator and frequency offset values associated with the reference demodulator may be applied to other demodulators of the multi-channel receiver. These frequency offset values may be used by individual demodulators of each channel for correcting corresponding frequency offsets.

Abstract: A communication set-up having an electronic circuit; the circuit including at least one communication unit for wireless communication. The communication unit includes an antenna network connected to an antenna; and also includes an actuating unit. The circuit of the communication set-up further includes a signal processing unit, and in response to operation of the actuating unit, the actuating unit is configured to release a signal to the signal processing unit, which, on the basis of this, converts the communication set-up from a blocked state to an enabled state, or vice versa. In addition, a method for controlling such a communication set-up is described.

Abstract: A wearable mobile phone holder includes a holding part, a base, clamping teeth and a latch. The base is pivotally connected to the holding part through a pivot shaft. The clamping teeth are arranged on the holding part, and the latch is arranged on the base. The plurality of clamping teeth are arranged along a circumferential direction of the pivot shaft. An end of the latch is inserted into a clamping teeth gap between the clamping teeth. The mobile phone can be quickly installed into or removed from the wearable mobile phone holder by only rotating the pressing head. The mobile phone can be tightly clamped and positioned by the spring in the rotary pressing mechanism, which can be easily and quickly operated. The distance between the clamping jaws can be adjusted to adapt to mobile phones of different models and sizes to improve the generality of the holder.