This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to frequency drift due to varying temperature and/or humidity conditions. Correcting for the frequency drift may provide an opportunity to remove or filter excess bandwidth. Further embodiments may include receiving, in a tuning request, information about a transponder type. A frequency translation module may be adjusted based, at least in part, on the transponder type related to the IF signal being input into the frequency translation module. Such frequency-shifting and transponder-specific filtering may allow Single-Wire Multiswitch (SWM) devices to provide output signals with narrower bandwidth, which may improve signal quality, cable run length, reduce power demands, etc.

A wireless transmitter processing chain includes digital radio frequency mixing circuitry to generate, in digital form, a representation of a transmit signal including multiple communication channels. From the digital representation, a wideband digital to analog converter creates the analog transmit signal that includes the communication channels. Individual mixers and filters follow, with mixing frequencies tuned to place the communication channels at the desired frequency centers.

A method and apparatus resiliently despreads terrestrial navigation signals in which the spreading code duration is equal to an underlying baseband symbol rate, including ground beacons based on civil GNSS waveforms, and malicious spoofers. Symbol-rate synchronous channelizers exploit the baseband symbol rate, and means for blindly and resiliently detecting and determining geo-observables of those signals are described. Disclosed techniques can despread signals in arbitrary multipath, and subject to near-far interference in which the relative strength of the interferer is much higher than the despreading gain of the receiver, including near-far tonal and narrowband co-channel interference.

Methods and systems for 60 GHz distributed communication are disclosed and may include generating IF signals from baseband signals in a computing device with wireless capability. The IF signals may be communicated to remote RF modules within the computing device via coaxial lines. The IF signals may be up-converted to RF signals and transmitted via the RF modules. The IF signals in the coaxial lines may be tapped via taps coupled to the RF modules. The baseband signals may comprise video data, Internet streamed data, and/or data from a local data source. The RF signals may be communicated to a display device. Control signals for the RF devices may be communicated utilizing the coaxial lines. One or more of the RF devices may be selected based on a direction to a receiving device. The remote RF devices may comprise mixers. The RF signals may comprise 60 GHz signals.

The present invention is related to a method and apparatus for processing multiple wireless communication services in a receiver. A receiver receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer and a local oscillator (LO). The LO frequencies are set such that the down-converted IF bands of the multiple services are fallen into a single IF band.

The invention relates to a repeater system for forwarding radio signals. The repeater system comprises a donor unit for converting the frequencies of the radio signals from the transmission frequency to an intermediate frequency; a server unit for converting the converted radio signals from the intermediate frequency to the transmission frequency; and a cable, which connects the donor unit and the service unit and transmits the converted radio signals over a distance between the donor unit and the service unit at the intermediate frequency. The donor unit has an uplink donor antenna and a separate downlink donor antenna and/or the service unit has an uplink service antenna and, at the same time, a separate downlink service antenna.

This disclosure relates to a devices and methods related to satellite information broadcasting. Example embodiments may include frequency shifting an intermediate frequency (IF) signal down-conversion from the microwave-band. As an example, down-conversion involving local oscillators may lead to frequency drift due to varying temperature and/or humidity conditions. Correcting for the frequency drift may provide an opportunity to remove or filter excess bandwidth. Further embodiments may include receiving, in a tuning request, information about a transponder type. A frequency translation module may be adjusted based, at least in part, on the transponder type related to the IF signal being input into the frequency translation module. Such frequency-shifting and transponder-specific filtering may allow Single-Wire Multiswitch (SWM) devices to provide output signals with narrower bandwidth, which may improve signal quality, cable run length, reduce power demands, etc.

Some of the embodiments of the present disclosure provide a receiver comprising a class AB common-gate transformer-based low noise transconductance amplifier (LNT) configured to receive an electromagnetic signal, a passive resonant mixer electrically connected to (i) an output port of the class AB common-gate transformer-based LNT and (ii) a local oscillator. The passive resonant mixer can be configured to reject at least one harmonic of the local oscillator. The receiver also comprises a base-band module electrically connected to an output port of the passive resonant mixer.

Embodiments herein describe a circuit including a passive intermodulation (PIM) model circuit configured to process first data to generate a PIM interference model output to be concatenated with second data, the second data including a first carrier frequency and a second carrier frequency, and the circuit further including a PIM model adapt circuit configured to receive frequency shifted captured data and frequency shifted PIM models to generate updated values to compensate for PIM interference after the PIM interference model output is concatenated with the second data.

The present invention provides a transceiver circuit including receiver circuit, wherein the receiver circuit includes a first mixer, a second mixer, a complex filter, a switch module and an ADC. The first mixer is configured to mix an input signal with a first oscillation signal to generate a first mixed signal. The second mixer is configured to mix the input signal with a second oscillation signal to generate a second mixed signal. The complex filter is configured to generate a first intermediate frequency signal and a second intermediate frequency signal according to the first mixed signal and the second mixed signal. The switch module is configured to select one of the first intermediate frequency signal and the second intermediate frequency signal to serve as an output intermediate frequency signal. The ADC is configured to perform an analog-to-digital conversion operation on the output intermediate frequency signal to generate a digital signal.