Abstract: An adaptive receiver for receiving a radio frequency (RF) signal and converting the RF signal at an RF frequency FRF toward a low intermediate frequency FIF is disclosed. The adaptive receiver comprises a pair of band pass filters with a nominal center frequency Fc equal to FIF, a look-up table (LUT) configured to estimate a frequency offset ?f, representing the center frequency of the band pass filter due to an operating temperature change and/or process variation, a micro controller configured to estimate the operating center frequency of the band pass filter (=FIF+?f with the frequency offset included) and use this new center frequency as the adaptive intermediate frequency FIF,AD, and a local oscillator generates oscillating signals at a frequency FLO equal to FRF minus FIF,AD. A temperature sensing device may also be included in this adaptive receiver.

Abstract: An adaptive receiver for receiving a radio frequency (RF) signal and converting the RF signal at an RF frequency FRF toward a low intermediate frequency FIF is disclosed. The adaptive receiver comprises a pair of band pass filters with a nominal center frequency Fc equal to FIF, a look-up table (LUT) configured to estimate a frequency offset ?f, representing the center frequency of the band pass filter due to an operating temperature change and/or process variation, a micro controller configured to estimate the operating center frequency of the band pass filter (=FIF+?f with the frequency offset included) and use this new center frequency as the adaptive intermediate frequency FIF,AD, and a local oscillator generates oscillating signals at a frequency FLO equal to FRF minus FIF,AD. A temperature sensing device may also be included in this adaptive receiver.

Abstract: A wireless communication module includes a radiation unit, a battery, and a communication unit. The radiation unit has an antenna and a rectifier, in which the antenna is used to receive a radio frequency (RF) signal, and the rectifier converts the RF signal and outputs a voltage signal. The battery receives the voltage signal, and accordingly stores an electrical energy. The communication unit is electrically connected to the battery, and is powered by the electrical energy. When the wireless communication module is applied to a communication device, the RF signal is used as a source of an electrical power, and as the radiation unit and the communication unit are integrated into a system on chip (SOC), an overall volume of the communication device is effectively reduced.

Abstract: A wireless communication module includes a photoelectric conversion unit, a battery, and a communication unit. The photoelectric conversion unit is used to receive a light source, convert the light source into an electrical energy, and output the electrical energy. The battery is electrically connected to the photoelectric conversion unit, and is used to store the electrical energy. The communication unit is electrically connected to the battery, and is powered by the electrical energy. When the wireless communication module is applied to a communication device, a solar energy source is used as a source of an electrical power, and as the photoelectric conversion unit and the communication unit are integrated into a system on chip (SOC), an overall volume of the communication device is effectively reduced.