摘要:
A radio frequency (RF) transmitter includes a baseband processing module, an up conversion module, a power amplifier module, and an antenna assembly. The baseband processing module is coupled to convert outbound data into a first outbound symbol stream and a second outbound symbol stream and to generate an adjust signal. The up conversion module is coupled to convert the first outbound symbol stream into a first up converted signal and to convert the second outbound symbol stream into a second up converted signal. The power amplifier module is coupled to amplify the first and second up converted signals to produce first and second outbound RF signals. The antenna assembly is coupled to transmit the first and second outbound RF signals, wherein the antenna assembly adjusts at least one of amplitude and phase of at least one of the first and second outbound RF signals based on the adjust signal.
摘要:
A multi-mode RFID reader operates in both far field mode and near field mode. The multi-mode RFID reader includes a transmitter section, a receiver section, a transmit multiplexer and a receive multiplexer. Both the transmit multiplexer and the receive multiplexer are configurably coupled to a far field antenna structure and a near field coil structure. For far field operation, the transmit multiplexer provides an up-converted outbound signal to a far field antenna structure and the receive multiplexer provides an inbound signal to a receiver section. For near field operation, the transmit multiplexer provides an up-converted outbound signal to the near field coil structure and the receive multiplexer provides an inbound signal to the receiver section.
摘要:
Aspects of a method and system for enabling simultaneous FM transmitter and FM receiver functions using an integrated Bluetooth Local Oscillator Generator (LOGEN). A Bluetooth® LOGEN may be utilized to generate Bluetooth® signal that comprise (I) and (Q) components for use in Bluetooth® communication. The Bluetooth® LOGEN may then be utilized by a DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® LOGEN may also be utilized by a second DDFS to generate FM radio (I) and (Q) signals for FM radio reception. The Bluetooth® signals may be kept at the same frequency, or reduced in frequency, for use in clocking the DDFS. A frequency word may also be utilized to clock the two DDFS. The outputs of each DDFS may be a constant frequency while the inputs to each DDFS may vary in frequency.
摘要:
An FM receiver including an FM antenna that receives continuous wavelength signals, where the FM receiver is coupled to the FM antenna and operable to alter a center frequency of a gain profile of the FM antenna. The FM receiver includes a low noise amplifier module that is coupled to amplify the continuous wavelength signal to produce an amplified RF signal therefrom. A down conversion module is coupled to mix the amplified RF signal with a local oscillation to produce an information signal. A filter module is coupled to filter the information signal to produce a filtered information signal. A demodulation module is coupled to capture audio information from the filtered information signal. A signal monitoring module is coupled to monitor the FM signal quality of a received continuous wavelength signal. The signal monitoring module produces a signal quality indication therefrom. An antenna control module produces a signal value based upon the signal quality indication, wherein the signal value operates to alter the center frequency of a gain profile of the FM antenna.
摘要:
A real-time/non-real-time/RF IC includes first and second baseband processing modules, an RF section, a wireline interface, and a bus structure. The first baseband processing module converts real-time outbound data into real-time outbound symbols and converts real-time inbound symbols into real-time inbound data. The second baseband processing module converts non-real-time outbound data into non-real-time outbound symbols and converts non-real-time inbound symbols into non-real-time inbound data. The RF section converts the real-time outbound symbols into real-time outbound RF signals, converts real-time inbound RF signals into the real-time inbound symbols, converts the non-real-time outbound symbols into non-real-time outbound RF signals, and converts non-real-time inbound RF signals into the non-real-time symbols. The wireline interface couples the non-real-time outbound data, the non-real-time inbound data, the real-time outbound data, and/or the real-time inbound data to an off-chip wireline connection.
摘要:
A radio frequency integrated circuit (RFIC) includes a low noise amplifier amplifies an inbound radio frequency (RF) signal to produce an amplified RF signal. A down conversion module converts the amplified RF signal to a down converted signal based on a local oscillation. An analog to digital conversion (ADC) module converts the down converted signal into a digital signal. A baseband processing module converts the digital signal into inbound data, wherein at least one function of the baseband processing module is clocked by a plurality of baseband clock signals. A clock module produces the plurality of baseband clock signals, wherein a rate of each of the plurality of baseband clock signals is set such that frequency dependent noise components associated with each of the plurality of baseband clock signals are outside a frequency band associated with the inbound RF signal.
摘要:
A receiver architecture for canceling blocking signals in the receive path includes a low noise amplifier for receiving and amplifying an inbound RF signal to produce an amplified inbound signal, in which the inbound RF signal includes a modulated RF signal and a blocking signal, and a cancellation module for substantially canceling the blocking signal from the amplified inbound RF signal and substantially passing the modulated RF signal. The cancellation module cancels the blocking signal by generating an injection signal representative of the blocking signal, combining the blocking signal with the injection signal to produce an error signal, updating the injection signal based on the error signal and using the injection signal to cancel the blocking signal from the amplified inbound RF signal.
摘要:
A dynamic radio frequency (RF) front end includes an antenna array, a power amplifier structure, and a low noise amplifier structure. The power amplifier structure generates a plurality of outbound RF signals from an outbound RF signal and provides the plurality of outbound RF signals to the antenna array. Each of the plurality of outbound RF signals has a different transmit phase rotation. The low noise amplifier structure receives a plurality of inbound RF signals from the antenna array and outputs one of the plurality of inbound RF signals based on a favorable phase relationship with respect to the outbound RF signal. Each of the plurality of inbound RF signals has a different receive phase rotation.
摘要:
An integrated circuit (IC) includes at least one baseband section, at least one radio frequency (RF) section, and an interface module. The interface module is configured to couple the at least one baseband section to the at least one RF section, wherein the interface module includes an analog interface module and a digital interface module.
摘要:
An RF receiver section includes an adjustable antenna assembly, a low noise amplifier module, and a down conversion module. The adjustable antenna assembly is configured to provide a first receive antenna structure and a second receive antenna structure. The first and second receive antenna structures receive an inbound wide bandwidth RF signal that includes an interferer RF signal component and a desired inbound RF signal component. The effective polarization of at least one of the first and second receive antenna structures is adjusted to reduce signal strength of the interferer RF signal component.