94 results about "Tower Mounted Amplifier" patented technology

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).

A system for sensing the operating state of a tower top amplifier for mobile communication system, includes a plurality of tower top amplifiers each connected to communication antennas; and an operating state management part monitoring the operating state of each tower top amplifier. The operating state management part monitors the operating state of each tower top amplifier by the use of a single power supply line connected between itself and each tower top amplifier. In a method of sensing the operating state of a tower top amplifier for mobile communication system, the operating state of each tower top amplifier is monitored by using an amount of consumed DC power applied to the respective tower top amplifiers. This method includes the steps of measuring a potential difference of a given section of the DC power applied to each tower top amplifier; and comparing a result obtained by the measuring step and determining the normal or abnormal states of the tower top amplifiers.

The invention discloses a offset T type head that comprises the first port, the second port, the third port, blocking condenser, the first inductance, the second inductance, modem, thereinto, the second inductance is used to connect the first port, the second port transmits said direct current; the invention also provides a system which controls antenna that comprises electricity controlled antenna drive motor unit, electricity controlled antenna, tower top amplifier, offset T type head and base station; according to the offset T type head of the invention, when the non- electricity controlled antenna is updated to the electricity controlled antenna, there is no need to be instead of STMA, so the cost is decreased, the electricity controlled antenna controller is not added, and the technique problem of poor applicability using electricity controlled antenna controller can be avoided, and the base station do not need to provide connection port, without longer cable, the amount of work is decreased.

The invention provides an inclination angle remote control system of an electric tuning antenna, which comprises at least one electric tuning antenna positioned on the tower top side with an adjustable inclination angle; at least one electric tuning antenna control device for controlling and adjusting the inclination angle of the electric tuning antenna; and an electric tuning control module for communicating with the electric tuning antenna control device for controlling the electric tuning antenna control device and managing the electric tuning antenna, wherein the electric tuning antenna is connected with the electric tuning antenna control device through an AISG cable; and the AISG cable supplies power to the electric tuning antenna and a tower-top amplifier through six pins. The invention can achieve improved adjusting accuracy, simpler maintenance and more flexible networking, and meet the requirement of different application occasions, thus optimizing high-quality network, reducing the operation and the maintenance cost and improving the benefits.

This invention discloses a base station equipment structure, it is used in time division duplexing code division multiple access communicating system. it includes indoor equipment and outdoor equipment. The outdoor equipment includes amplifier on the peak of the tower, filter, low noise and power amplifier circuit module, antenna array module. There are hardware and radio frequency part in the amplifier on the peak of the tower. The indoor equipment includes common and clock module, base band processing and exchanging module, radio frequency processing module, and the common and clock module is connected to radio frequency processing module by the base band processing and exchanging module. The radio frequency processing module is connected to the peak amplify subsystem by a lightning protection module. This invention also discloses a kind of backup method at the same time. The 1+1 main backup mode is used for one single plate, and N+1 or no backup mode is used for several single plates.

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 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.

The invention relates to a bypass control method for a two-path bidirectional tower amplifier, which comprises the two-path bidirectional tower amplifier and is characterized in that: a receiving antenna and a transmitting antenna of the amplifier are respectively connected with a duplexer through a radio-frequency switch; the radio-frequency switch is controlled by an MCU of the amplifier; the MCU is connected with a failure detection unit circuit; and alarms processed by the MCU comprise an over-temperature alarm, a stationary wave alarm, an amplifier failure alarm, a low noise amplifier failure alarm, a power-fail alarm, a power failure alarm and an overpower alarm. Through the method, judgement of each failure of a monitoring equipment system can be checked without misjudgement and faulted and unbypassed phenomena; after equipment is bypassed and each failure recovers, the equipment is in normal working order; remote control and inquiry can be carried out; and the method has better market value.

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 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.

The apparatus thereof comprises a PC, a spectrometer connected to the tested tower top amplifier and said PC, and a testing stand connected to the PC and the tested tower top amplifier. The testing stand comprises a signal source, a control board connected to the signal source and a DC power source. The signal source of testing stand provides signals for the tested tower top amplifier. The PC is used to control the output of the signal from the testing stand, provides different outputted wave, different power range, outputs signals with controllable waveform and amplitude and tests the gain of receiving and transmitting and the three-order intersection indication; and controls the testing stand control board to control and test the send receive state of the tested tower top amplifier.

The subject matter discloses a tower mount amplifier device (TMA device), comprising a reception circulator for receiving a reception signal transmitted from an antenna to a base station and a low noise amplifier unit for amplifying the reception signal. The TMA device also comprises a band pass filter for filtering the reception signal amplified by the low noise amplifier unit and a transmission circulator for transmitting the reception signal filtered by the band pass filter to the base station. In some cases, the tower mount amplifier further comprises a switch for switching the signal from the reception circulator directly to the transmission circulator, wherein the switch operates according to a functionality of the low noise amplifier unit.

The invention relates to an antenna diversity arrangement and a radio base station in a frequency divided mobile cellular system with sectorized cells. Space diversity or polarization diversity is provided by providing at least two branches. In accordance with the invention an operator frequency band is divided into a plurality of bands for transmitting and receiving. All sectors are branch wise combined in a respective tower mounted amplifier. TX signals within the TX bands belonging to a TMA are diplexed and simultaneously transmitted on the sectors. RF signals received on one branch of a sector are combined with RF signals received on the corresponding sector in the other branches. The RX signals so combined are fed to the radio base station on a single feeder together with the TX signals fed in the opposite direction from transceivers of the base station to the same TMA. A sector may be assigned two or more TX frequencies. Frequency hopping within each TX band may optionally be provided (synth hopping). If two or more TX frequencies are assigned to a sector synth hopping may be combined with frequency hopping between the TX bands assigned to the sector in the A branch as well as the TX bands assigned to the corresponding sector in the B branch.

The invention discloses a lightening protection method and a lightening protection feed between a tower amplifier and a base station. The lightening protection feed of the base station is provided with a lightening protection port, a radio frequency port and a DC input port respectively; the lightening protection port is connected with a radio frequency transceiver of the base station to prevent the radio frequency transceiver of the base station from being damaged by induction overcurrent and overvoltage; the radio frequency port is connected between the base station and the tower amplifier and is used for transmitting radio frequency signals of the base station and the tower amplifier; the DC port is connected with the tower amplifier and is used for transmitting DC of the tower amplifier; the lightening protection port and the radio frequency port adopts a high-pass filter circuit and a low-pass filter circuit, and the radio frequency communication signals are high-frequency AC signals and can only pass a high-pass filter channel at the radio frequency port; and low-frequency signals of lightening stroke can only pass a lightening branch at the lightening protection port so as to conduct discharge current to ground. The lightening protection feed adopts high-pass filtering and low-pass filtering, has wide frequency, small loss of voltage standing wave ratio, high isolation without signal interference, and is provided with an indicator light circuit to judge the DC supply condition.

A dielectric-based 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 with a transmit filter. The housing further includes a receive path with at least one receive filter and a low noise amplifier. The receive filter includes a plurality of cavities with a dielectric-based resonator disposed in at least some of the plurality of cavities. In one aspect, the RF device has a volume of less than about 155 in³. The RF device including the dielectric-based resonators has excellent out-of-band signal rejection with low loss. In addition, the RF device described herein is small enough to mount close to the antenna. The dielectric-based RF device has superior performance characteristics and a smaller footprint than conventional air cavity-based TMAs.

A GSM/CDMA bi-directional duplex top tower amplifier includes an up-link and a down-link, the circuit structure of the up-link is that an emit receive antenna (ANT) is connected with the input of a low noise amplifier (LNA) via a duplexer (DUP2), LAN output is connected with the base station (BTS) VIA dup1, the circuit structure of the down-link is that BTS is connected with the input of the PA via DUP, the output of PA is connected with the ANT via DUP2, a new base station extending cover and a network optimization device designed for solving the problem of covering the edge region of GSM/CDMA system and integrates the base station PA and simplex top tower amplifier.

The invention discloses a grading bypass circuit for a tower amplifier and a control method thereof; the circuit comprises a preamplifier, a post amplifier, three selector switches and two branch circuit connecting lines with lambda/2 length, each selector switch is provided with a common terminal and one of movable ends, which is connected with the common terminal, all the selector switches are controlled to carry out comprehensive switching by combining the working state of the preamplifier and the post amplifier, so as to lead the circuit to have a state I that a first selector switch, thepreamplifier, a second selector switch, the post amplifier and a third selector switch which are conducted sequentially; and a state II that the first selector switch, the preamplifier, a second branch circuit connecting line and a third selector switch which are conducted sequentially; and a state III that the first selector switch, a first branch circuit connecting line and the third selector switch which are conducted sequentially; the invention simplifies the structure of the grading bypass circuit, and the cost is reduced correspondingly; on the electrical performance, bypass loss and thewhole power consumption are further reduced.

The invention discloses a cavity filter, and radio-frequency zooming-out equipment, a signal receiving-transmitting device and a tower top amplifier comprising the cavity filter. The cavity filter provided by the invention comprises a cavity and a resonant rod in the cavity, wherein the outer surface of the resonant rod is provided with a coupling body; an insulating medium layer is formed between the coupling body and the resonant rod; and the coupling body is provided with a connecting piece for transmitting signals. The cavity filter provided by the invention has the dual functions of coupling signals and resisting lightning, is simple in structure, has a larger coupling amount, and contributes to comparatively improving the cavity space arrangement.

A wireless receiving and sending system is used to compensate the loss of transmission, it includes antenna, transceiver, tower top amplifier and transmission loss detector. The transceiver is used to send power and the first signal. The tower top amplifier is connected with the cable to receive the second signal from the transceiver, and zoom the second signal; the second signal is the first signal which passes the attenuation of cable. The transmission loss detector is connected between the tower top amplifier and the transceiver to detect that whether the transceiver remit signal, calculating the loss between the transceiver and the tower top amplifier. The tower top amplifier is used to remit signal to antenna or receive signal from antenna based on the detect result of the transmission loss detector, and compensates said transmission loss. Said wireless receiving and sending system can compensate transmission loss between the transceiver and tower top amplifier precisely.

A highly integrated general duplexer module of duplex tower top amplifier in mobile communication is composed of signal coupling and signal power divider , common by-pass switch of up and down link , directional coupler , standing wave alarm detection circuit , band-pass filter BPE ( TX ) band-pass filter BPF ( T X 1 ) , low noise amplification LNA , band-pass filter BPF ( R X 2 ) , circulator , circulator detection circuit and 7 / 16 connector . It features that connector free connection between various functional components is applied to form duplexer module to be one body structure being highly integrated.

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.