Abstract: A damper device that includes an elongate body containing a passageway for fluid to flow there through and a first opening and a second opening, wherein the first opening and the second opening have an inside diameter. A throat is disposed within the body and between the first opening and the second opening of the elongate body having an inside diameter smaller than the inside diameter of the first opening and the second opening.

Abstract: Radio frequency signal boosters serving as outdoor cellular infrastructure are provided. In certain embodiments, a signal booster system includes a downlink donor antenna configured to receive a downlink signal of a frequency band higher than 20 gigahertz (GHz), an uplink server antenna configured to receive an uplink signal of the frequency band, signal booster circuitry including a downlink amplification circuit configured to amplify the downlink signal to generate an amplified downlink signal and an uplink amplification circuit configured to amplify the uplink signal to generate an amplified uplink signal, a downlink server antenna configured to transmit the amplified downlink signal, and an uplink donor antenna configured to transmit the amplified uplink signal.

Abstract: 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.

Abstract: A portable microscope includes an enclosure having an opening configured to receive a slide, a slide holder disposed within the enclosure and operably positioned with respect to the opening to receive the slide, a lens system disposed within the enclosure above the slide holder, a light source disposed within the enclosure below the slide holder, a camera disposed within the enclosure and optically aligned with the lens system, a processor disposed within the enclosure and communicably coupled to the camera, a display screen affixed to the enclosure and visible from an exterior of the enclosure, wherein the display screen is communicably coupled to the processor. The processor is configured to obtain an image of a specimen disposed on the slide, analyze the specimen using artificial intelligence, and display the image of the specimen and a result of the analysis on the display screen.

Abstract: Radio frequency signal boosters for high frequency cellular communications are provided herein. In certain embodiments, a signal booster system for providing high frequency wireless signal reception of a 5G network inside a building is provided. The signal booster system includes a primary unit configured to communicate with cellular infrastructure (e.g., a base station) of the 5G network through a window of a first room of the building, and an auxiliary unit for extending coverage from the first room to a second room. The auxiliary unit includes a housing located in the first room and having a base station antenna and booster circuitry integrated therewith. The auxiliary unit further includes a mobile station antenna in the second room and connected to the housing by a short cable.

Abstract: Apparatus and methods for signal boosters for vehicles are provided. In certain embodiments, a vehicle signal booster system includes an interior unit including a mobile station antenna that receives an RF uplink signal and transmits a boosted RF downlink signal. The vehicle signal booster system further includes a top unit including a base station antenna that receives an RF downlink signal and transmits a boosted RF uplink signal. The vehicle signal booster system further includes booster circuitry that generates the boosted RF downlink signal based on amplifying one or more downlink channels of the RF downlink signal, and that generates the boosted RF uplink signal based on amplifying one or more uplink channels of the RF uplink signal. The booster circuitry is implemented in the top unit or in the top unit and the interior unit.

Abstract: 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.

Abstract: 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.

Abstract: A portable microscope includes an enclosure having an opening configured to receive a slide, a slide holder disposed within the enclosure and operably positioned with respect to the opening to receive the slide, a lens system disposed within the enclosure above the slide holder, a light source disposed within the enclosure below the slide holder, a camera disposed within the enclosure and optically aligned with the lens system, a processor disposed within the enclosure and communicably coupled to the camera, a display screen affixed to the enclosure and visible from an exterior of the enclosure, wherein the display screen is communicably coupled to the processor. The processor is configured to obtain an image of a specimen disposed on the slide, analyze the specimen using artificial intelligence, and display the image of the specimen and a result of the analysis on the display screen.

Abstract: A damper device that includes an elongate body containing a passageway for fluid to flow there through and a first opening and a second opening, wherein the first opening and the second opening have an inside diameter. A throat is disposed within the body and between the first opening and the second opening of the elongate body having an inside diameter smaller than the inside diameter of the first opening and the second opening.

Abstract: Radio frequency signal boosters for high frequency cellular communications are provided herein. In certain embodiments, a signal booster system for providing high frequency wireless signal reception of a 5G network inside a building is provided. The signal booster system includes one or more auxiliary signal boosters for extending coverage within rooms of the building. For example, an auxiliary signal booster can include a donor unit located in a first room and having a base station antenna and booster circuitry integrated therewith. The auxiliary signal booster further includes a server unit located in a second room and having a having a mobile station antenna integrated therewith. The donor unit and the server unit are connected by a short cable.

Abstract: Radio frequency signal boosters for high frequency cellular communications are provided herein. In certain embodiments, a signal booster system for providing high frequency wireless signal reception of a 5G network inside a building is provided. The signal booster system includes a primary unit configured to communicate with cellular infrastructure (e.g., a base station) of the 5G network through a window of a first room of the building, and an auxiliary unit for extending coverage from the first room to a second room. The auxiliary unit includes a housing located in the first room and having a base station antenna and booster circuitry integrated therewith. The auxiliary unit further includes a mobile station antenna in the second room and connected to the housing by a short cable.

Abstract: 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.

Abstract: Radio frequency signal boosters for high frequency cellular communications are provided herein. In certain embodiments, a signal booster system for providing high frequency wireless signal reception of a 5G network inside a building is provided. The signal booster system includes a primary unit configured to communicate with cellular infrastructure (e.g., a base station) of the 5G network through a window of a first room of the building, and an auxiliary unit for extending coverage from the first room to a second room. The auxiliary unit includes a housing located in the first room and having a base station antenna and booster circuitry integrated therewith. The auxiliary unit further includes a mobile station antenna in the second room and connected to the housing by a short cable.

Abstract: A wireless repeater is disclosed. The wireless repeater can include a main booster with a first gain unit with a first adjustable gain and a second gain unit with a second adjustable gain. The wireless repeater can include a front end booster communicatively coupled to the main booster, with a coaxial cable coupled between the main booster and the front end booster. A test signal generator is configured to generate a direct current test signal or a radio frequency test signal to determine a signal loss of the coaxial cable. The wireless repeater can include a control unit to adjust one or more of the first adjustable gain or the second adjustable gain based on the determined signal loss of the coaxial cable.

Abstract: 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.

Abstract: Apparatus and methods for signal boosters for vehicles are provided. In certain embodiments, a vehicle signal booster system includes an interior unit including a mobile station antenna that receives an RF uplink signal and transmits a boosted RF downlink signal. The vehicle signal booster system further includes a top unit including a base station antenna that receives an RF downlink signal and transmits a boosted RF uplink signal. The vehicle signal booster system further includes booster circuitry that generates the boosted RF downlink signal based on amplifying one or more downlink channels of the RF downlink signal, and that generates the boosted RF uplink signal based on amplifying one or more uplink channels of the RF uplink signal. The booster circuitry is implemented in the top unit or in the top unit and the interior unit.

Abstract: 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.

Abstract: Apparatus and methods for signal boosters for vehicles are provided. In certain embodiments, a vehicle signal booster system includes an interior unit including a mobile station antenna that receives an RF uplink signal and transmits a boosted RF downlink signal. The vehicle signal booster system further includes a top unit including a base station antenna that receives an RF downlink signal and transmits a boosted RF uplink signal. The vehicle signal booster system further includes booster circuitry that generates the boosted RF downlink signal based on amplifying one or more downlink channels of the RF downlink signal, and that generates the boosted RF uplink signal based on amplifying one or more uplink channels of the RF uplink signal. The booster circuitry is implemented in the top unit or in the top unit and the interior unit.

Abstract: 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.