A technology is described for a bi-directional amplifier remote monitoring system. A directional coupler can have a first port, a second port, and a third port. The first port can be configured to be coupled to a bi-directional amplifier first port. The second port can be configured to be coupled to a server antenna port. The third port can be configured to be coupled to a wireless modem. The directional coupler can be configured to direct a downlink signal with a selected amount of attenuation from the bi-directional amplifier first port to the wireless modem. The directional coupler can be configured to direct a modem signal with the selected amount of attenuation from the wireless modem to the bi-directional amplifier first port for communication on an uplink path of the bi-directional amplifier.

Aspects of the subject disclosure may include, a method of connecting a first port of an amplification device to a single port electromagnetic communications device; and connecting a second port of the amplification device to a communications system, wherein the amplification device increases a first signal strength of first signals received from the single port electromagnetic communications device and provides amplified first signals to the communications system, and wherein the amplification device decreases a second signal strength of second signals received from the communications system and provides attenuated second signals to the single port electromagnetic communications device. Other embodiments are disclosed.

A wireless communication system includes a first communication device and a second communication device. The first communication device obtains a plurality of radio frequency (RF) signals corresponding to different communication protocols from a plurality of communication systems. A frequency of each of the plurality of RF signals is upconverted to a different frequency, and a phase noise is introduced in the plurality of RF signals. The plurality of RF signals corresponding to different communication protocols are multiplexed into a mmWave RF signal of a specified frequency and a defined pilot tone along with the mmWave RF signal is transmitted. The second communication device captures the mmWave RF signal having the defined pilot tone over-the-air. At least one RF signal is down converted to a source frequency and the phase noise is estimated in the one extracted RF signal based on the defined pilot tone which is reduced concurrently.

Examples disclosed herein relate to a high gain active relay antenna system. The active relay antenna system comprises a first antenna pair having a first receive antenna and a first transmit antenna to communicate wireless signals in a forward link from a base station to a plurality of users; and a second antenna pair having a second receive antenna and a second transmit antenna to communicate wireless signals in a return link from the plurality of users to the base station. The active relay antenna system further comprises a first active relay section and a second active relay section to provide for adjustable power gain in the wireless signals.

Apparatus and methods for signal booster systems with compensation for cable loss are provided herein. In certain configurations, a signal booster system includes two or more antennas for wirelessly communicating RF signals and a signal booster including booster circuitry for providing amplification to at least a portion of the RF signals. At least one of the antennas is connected to the signal booster via a cable. Additionally, the signal booster includes a cable loss compensation circuit that adjusts a gain of the booster circuitry to compensate for a loss of the cable.

A user device cradle can include a receiver configured to removably retain a wireless user device. One or more Radio Frequency (RF) signal couplers and one or more power couplers can be disposed in the receiver of the cradle. The one or more RF signal couplers can be configured to couple one or more RF communication signals to the wireless user device, while the one or more power couplers can be configured to couple power to the wireless user device.

An apparatus includes multiple signal paths for signal transmission, and control circuitry. The multiple signal paths include a first signal path and a second signal path. The first signal path is configured to convert a digital baseband signal to a first radio frequency (RF) signal having a first frequency and a first gain. The second signal path is configured to convert a digital baseband signal to a second RF signal having a second frequency and a second gain, wherein the second gain is less than the first gain. The control circuitry is coupled to the plurality of signal paths and is configured to receive one or more control signals to enable selective activation of at least one signal path of the plurality of signal paths.

A wireless communication system includes a first communication device and a second communication device. The second communication device captures over-the-air a mmWave RF signal of a specified frequency having a defined pilot tone transmitted by the first communication device. The second communication device extracts at least one RF signal from a plurality of RF signals corresponding to different communication protocols from the captured mmWave RF signal, estimates phase-noise in the at least one extracted RF signal, and down-converts the at least one extracted RF signal to a source frequency. The second communication device further reduces the phase noise in the at least one extracted RF signal concurrently at the down-convert and utilizes the at least one extracted RF signal with reduced phase noise for further distribution to one or more end-user devices.

The methods and systems for amplify-and-forward (in-band) relaying relate to beamforming techniques including receive and transmit beamforming for reducing self-interference, and improving Signal-to-Noise Ratio (SNR), or Signal to Interference plus Noise Ratio (SINR), of an incoming signal (to be relayed). The incoming signal is amplified and retransmitted simultaneously with the incoming signal, and over the same frequency band as that of an incoming signal.

Radio frequency signal boosters serving as outdoor cellular infrastructure are provided. In certain embodiments, a signal booster system for a high frequency cellular network includes a parabolic base station antenna configured to receive a downlink signal of a frequency band higher than 20 gigahertz and to transmit an amplified uplink signal of the frequency band, booster circuitry configured to amplify an uplink signal to generate the amplified uplink signal and to amplify the downlink signal to generate an amplified downlink signal, and a mobile station antenna configured to receive the uplink signal and to transmit the amplified downlink signal.