95 results about "Tower Mounted Amplifier" patented technology

A RF device such as a tower mounted amplifier (TMA), mast-head amplifier (MHA), or Tower Mounted Boosters (TMB) includes a housing having a plurality of cavities and an input and an output, the input being coupled to the antenna and the output being coupled to a base station. The housing includes a transmission path holding multiple coaxial resonators. The housing further includes multiple receive paths including at least one path having a plurality of cavities, each cavity containing a dielectric resonator. The metallic transmit resonator nearest the antenna input is coupled to the first dielectric resonator via a common resonant wire. The last dielectric resonator in the receive path is coupled to a first metallic resonator of a downstream clean-up filter via another common resonant wire.

A distributed radio base station (20) comprises a radio equipment controller (REC) (22) situated at a main site (23) and a radio equipment (RE) (24) situated at a remote site (25). A remote unit (102, 104, 106, 108, 110, 124) configured to engage in direct communications with the radio equipment controller (REC) is also situated at the remote site (25). An internal interface (26) connects the radio equipment controller (REC) and the radio equipment (RE). Advantageously, the internal interface (26) also encapsulates the direct communications between the radio equipment controller (REC) (22) and the remote unit, thereby obviating a separate physical link between the radio equipment controller (REC) and the remote unit. A new physical link (130) transmits, between the radio equipment (RE) and the remote unit, the direct communications between the radio equipment controller (REC) and the remote unit which are encapsulated over the internal interface (26). The remote unit can take various differing forms, including that of an antenna (102) with remote electrical tilt control; a tower mounted amplifier (TMA) (104); a Transmission network unit (106); a separate radio base station (108) which is co-located at the remote site; a proprietary equipment unit (110); or even one or more cascaded radio equipments (RE) (124).

The digital down frequency conversion system comprises: an A / D and AGC control module, an open interface A / B module, a special digital intrinsic module, a mixing-frequency module, a variable-multiple extract filter module, a gain regulation module, a dc intrinsic inhibition module, a time-delay adjustment module, and a carrier power statistical module. This invention has wide application, such as RRU system, receiver, multi-carrier scheduling system, and wireless BS.

A wireless transceiver system for compensating a transport loss includes a transceiver (100), a tower mounted amplifier (TMA) (200), and a transport loss detector (400). The transceiver transmits a first signal at a transmit power. The first signal is changed into a second signal after cable attenuation from the transceiver. The TMA is connected to the transceiver via a cable, receives a second signal, and amplifies the second signal. The transport loss detector is connected to the TMA, and calculates a transport loss between the transceiver and the TMA. The TMA further compensates the transport loss between the transceiver and the TMA according to the calculated result of the controller.

A method, device and system for reducing the number of feeders (2, 3) between a radio base station (1) and an antenna diversity arrangement (10, 11, 12, 13) at which RF signals of the same frequency are received. In a tower mounted amplifier (45) individual RF signals from some or all of the antennas are frequency converted into intermediate frequency (IF) signals on mutually different intermediate frequencies which are combined and forwarded to the radio base station on a reduced number of feeders. In the radio base station the combined signal is split into individual signals amongst which the IF signals are frequency transformed to a signal suitable for diversity processing.

A base station for a wireless communications system having a tower-mounted amplifier system with a low-noise amplifier transistor and a thermoelectric cooler that reduces the operating temperature of the low-noise amplifier transistor. The amplifier system has additional heat-generating components, such as filters, and additional electrical components mounted on a substrate to which the low-noise amplifier transistor is mounted. These heat-generating components are thermally isolated from the cold side of the thermoelectric cooler. As a result, the cooling capacity and electrical power requirement for the thermoelectric cooler is significantly reduced because only the low-noise amplifier transistor is cooled.

A wireless transceiver system, for compensating a transport loss, includes an antenna (300), a transceiver (100), a tower mounted amplifier (TMA) (200), and a transport loss detector (400). The transceiver transmits a first signal at a transmit power. The first signal is changed into a second signal after the cable attenuation from the transceiver. The TMA, connected to the transceiver via a cable, receives the second signal and amplifies the second signal. The transport loss detector, connected between the TMA and the transceiver, detects a transmission state of the transceiver, and calculates a transport loss between the transceiver and the TMA. The TMA transmits signals to the antenna or receives signals from the antenna according to the detected result of the transport loss detector, and compensates the transport loss according to the calculated result of the transport loss detector.

The present invention discloses a method for a base station to be compatible high gain tower amplifier, and a device. The main method is that uplink signals sent by the tower amplifier is received; the uplink signals sent by the tower amplifier is performed attenuation; and the uplink signals after performed attenuation is sent to the base station. When the base station system is upgraded, the problem that the new base station is incompatible with the original tower amplifier gain is resolved through the method under the condition that the original tower amplifier and the new base station are not changed, and thus the upgrading cost and difficulty are greatly reduced.

The invention discloses a tower mounted amplifier which comprises a signal receiving unit and a signal transmission unit, wherein the signal receiving unit is in parallel with the signal transmission unit. The signal receiving unit comprises: a first band pass filter which is used for gating a received signal; a low noise amplifier which is used for amplifying the received signal; a second band pass filter which is used for protecting the low noise amplifier. The first band pass filter is successively connected with the low noise amplifier and the second band pass filter. The signal transmission unit is a band-stop filter which is used for gating a transmitted signal. In the invention, by using one band-stop filter and two band pass filters, the tower mounted amplifier with low loss, low noise and high inhibition can be realized. Simultaneously, a function of the two band pass filters arranged in the signal transmission unit of the traditional tower mounted amplifier can be realized by the one band-stop filter. Volume is minimized, weight is lightened and costs are reduced. Installation of the tower mounted amplifier is convenient.