101 results about "Antenna amplifier" patented technology

The invention of shark fins antenna relates to a radio receiver antenna for vehicle and marine, especially for AM/FM, GSM, GPS, and ETV. The structure has the antenna shell. The upper of shell inner sets a radio receiver antenna. One side of the antenna sets the output end of antenna signals. The output end connects the component and the signal input end of antenna amplifier through the antenna, or matching connects the coaxial cable directly. The antennas shell bottom installs the floor. The type of shell sets to be the shark fins. The radio receiver antenna uses the spiral spring antenna or metal antenna. The installed floor sets up the antenna fixed screw and nut. The floor can be installed with AM/FM antenna amplifiers, GPS receiver, GSM receiver, and ETV receivers.

The present invention relates to radio frequency (RF) distribution systems for mobile communications. In particular, the present invention relates to a radio frequency network facilitating radio communication where the usual free space propagation of electromagnetic waves is hampered, undesired or impossible, for example in tunnels, mines, and buildings and in large complexes like exhibition grounds, shopping malls, and airports. The radio frequency network (1) comprises a distributed antenna system (2) having radiating elements, a wired distribution system (3) feeding the distributed antenna system (2), at least one antenna amplifier (5) between one end of the wired distribution system (3) and the distributed antenna system (2), at least one line amplifier (4) at the other end of the wired distribution system (3), and automatic self-leveling units included in the antenna and line amplifiers (4, 5).

A reception antenna arrangement for motor vehicles for the GHz frequency range that is formed as a combined system for the reception of circularly polarized waves and/or vertically polarized waves by a plurality of dipole antennas. Their length is not greater than ¾ of the wavelength. To form a diversity function, at least one switching or reversing device (2) is provided so that at least two signals that are different in terms of diversity and received from the dipole antennas are alternatively supplied to at least one antenna connection point for diversity reception so that one or several more favorable reception signals can be selected and provided to the antenna amplifiers.

A high-frequency device for a vehicle antenna device which can be mounted on a surface of the vehicle, comprising a circuit board (1) with strip conductors and circuit components, in addition to feed means such as lines or connectors or the like. According to the invention, the circuit board (1) has at least one recess (2) extending crosswise in relation to a domed surface (3) for approximate equalization of said dome-shape.

For the purpose of making the system more economic, given full compensation of transmitter and receiver signal attenuation in the communication cable, the circuit controlling transmitter enable/disable status, including a controllable power source (control command converter) and a low pass filter separating a receive/transmit UHF signal from a lower frequency up to direct voltage) signal, a number of control commands, is introduced into mobile station, mobile station having autonomous power supply.

According to the first variant of the device, the control command, having passed the low pass filter (19), enables the power source (21) control from which power is supplied to the power amplifier (11) whose amplification is selected so as to compensate attenuation of the transmitter signal traveling from mobile station (1) to antenna (16). The voltage supplied from the mobile station (1) via the communication cable is applied to a stabilizer (22) via the other low pass filter (20) isolating the supply circuit from radio frequency receive and transmit signals.

According to the second variant of the device, a splitter (23) and rejector (24) are used in the duplex antenna amplifier (7). This makes implementation of antenna amplifier simpler and cheaper.

The invention discloses a methode and device of microwave zooming out with time division duplex in the mobile communication system. It has solved the problem of radio frequency zoom out with cable or optical fiber connection bwteen base station and antenna in TD-SCDMA system. The microwave transmission equipment is composed of cable and wireless base stations connected by group of separation remote microwave machine and microwave cables using the antenna amplifier. Microwave antenna amplifier synchronization is controlled by wireless base station through the cable control. Remote microwave machine and antenna amplifier synchronization and controlling is abtained by wireless control unit through the medium of space communication. Using three electric control decliners, outself-adapting control can be achieved. The invention solves the problem of TD-SCDMA super base station radio frequency zooming out.

An antenna amplifier, in particular for a magnetic resonance antenna, has a sheath wave barrier integrated into the signal path of the antenna amplifier in the form of a component designed exclusively for transfer of a differential signal.

The invention discloses an automobile window glass amplitude modulation and frequency modulation (AM/FM) shared printed antenna system, which relates to an automobile front window, rear window and side window windscreen AM/FM shared printed antenna system. The system consists of a window glass printed antenna part and an antenna amplifier part and is characterized in that: the automobile window glass printed antenna part is provided with an automobile window windscreen; the automobile window windscreen is printed with an AM/FM shared printed antenna and is provided with an antenna signal output terminal; the AM/FM shared printed antenna is connected with the antenna signal output terminal through a lead; the antenna amplifier part comprises an antenna amplifier shell, a bracket, an electronic circuit board, a signal output plug, a power supply input socket, parallel coaxial cable output lines, an antenna signal input terminal and a high-frequency signal connection line; the electronic circuit board is arranged on the bracket; a mounting hole is formed on the bracket; and the shell is sleeved on the bracket.

The invention relates to an automobile rear window glass printing antenna system, in particular to a frequency-modulation and amplitude-modulation printing antenna which is arranged on the rear window glass and connected with an antenna amplifier; the automobile rear window glass printing antenna system which is connected with a demisting and defrosting power supply is especially suitable for being used as acoustic antennas of middle-class and high-class cars. The automobile rear window glass printing antenna system is characterized in that the automobile rear window glass is provided with a frequency-modulation and amplitude-modulation printing antenna; the frequency-modulation printing antenna is provided with a plurality of antennas; the amplitude-modulation printing antenna is provided with a plurality of antennas; the frequency-modulation printing antenna and the amplitude-modulation printing antenna are respectively provided with printing antenna output terminals; the printing antenna output terminals of the frequency-modulation printing antenna and the amplitude-modulation printing antenna are respectively connected with the antenna amplifier by an over-bridge wire; the antenna amplifier is internally provided with a band stop filter which is connected with the anode of the power supply; the band stop filter of the frequency-modulation printing antenna connected with the anode of the power supply is connected with an elastic contact sheet; and one end of the band stop filter which is grounded at the other side of the frequency-modulation printing antenna is connected with the elastic contact sheet and the other end thereof is grounded.

An object of the invention is to receive a weak signal with high sensitivity and reduce distortion and signal suppression when a strong interference signal exists. When a high-frequency signal received by an antenna is to be amplified by an antenna amplifier and when an interference wave of high field strength exists, a switch circuit is switched by an output switchover circuit from the output of an amplifier to a through-circuit. The through-circuit guides the high-frequency signal, directly to the output side without passing through the amplifier. When the switching operation of the switch circuit is performed based on low-frequency components which are highly correlated with distortion components due to intermodulation, the switching operation can be performed more adequately. Noises can be reduced by performing a smoothing process on the switching operation, and the use of an inverting amplifier can prevent occurrence of oscillation.

The invention relates to a ground and satellite combined television receiving system. The system mainly comprises two parts, namely a fused antenna and a fused receiver, wherein the fused antenna is a mixed antenna integrating a satellite antenna with a wireless broadcasting antenna physically; the fused receiver is provided with two demodulators and two interfaces which receive satellite television signals by using a coaxial cable; the fused antenna transmits the satellite television signals and wireless broadcasting signals through one coaxial cable; and the fused receiver is used for supplying power to a satellite tuner, a wireless antenna amplifier, and the remote control steering and steering automatic positioning of the antenna simultaneously. The ground and satellite combined television receiving system is easy to operate and use, has a friendly man-machine interface, and can effectively receive cable digital television broadcasting programs, and satellite and ground digital television broadcasting programs.

The invention provides an amplifier of a front screen printed antenna for automobiles, which relates to a front windshield printed antenna for the automobiles and a small antenna amplifier system thereof and is suitable for a on-board antenna receiving system of a transceiver for the automobiles. The system of the invention comprises a front screen printed antenna part and an antenna amplifier part, wherein the front screen printed antenna part comprises a front windshield, and a frequency modulation (FM) and amplitude modulation (AM) combined printed antenna are printed on the front windshield; the antenna amplifier part comprises an antenna amplifier shell, a bracket, an electronic circuit board, a signal output plug, a power input socket, parallel coaxial cable output lines, an antennasignal input terminal and high-frequency signal connecting lines; the electronic circuit board is connected with the antenna signal input terminal, and the antenna signal input terminal is connected with an antenna signal output terminal; and electronic circuits comprise an AM input frequency selection circuit, an AM amplifying circuit, an AM output frequency selection circuit, an FM input frequency selection circuit, an FM amplifying circuit, an FM output circuit, a power circuit and an electrostatic protection circuit.

The invention relates to a carrier (1) for holding an electronic device, in particular an antenna amplifier of a vehicle, having at least one printed circuit board (9), the electronic device being able to be attached to a vehicle component, in particular a vehicle window (12), by means of the carrier (1) which is composed of an electrically nonconductive material, there being provision according to the invention for the carrier (1) to be embodied in a planar fashion and to have latching means as well as spring means which interact therewith and have the purpose of securing the printed circuit board (9) to the carrier (1), as well as at least one recess for holding a contact element in order to make electrical contact with a contact face of the printed circuit board (9) by means of a corresponding contact face (13) on the vehicle component.

The invention relates to the field of glass antennas, particularly provides a vehicle-mounted active glass antenna integrating an antenna amplifier and glass, and also provides a manufacturing of the vehicle-mounted active glass antenna. The vehicle-mounted active glass antenna comprises the glass, an antenna element and an antenna signal amplifier, wherein an antenna signal amplifying circuit is integrally printed on the surface of the glass, the input end of the antenna signal amplifying circuit is at least partially coincided with the feeding end of the antenna element, and an antenna signal amplifying element is welded on the antenna signal amplifying circuit. The vehicle-mounted active glass antenna has the advantages that by integrally printing the antenna signal amplifying circuit on the surface of the glass, the number of antenna parts is reduced, and the manufacturing cost is correspondingly reduced; the distance between the antenna signal amplifier and the antenna element is minimized, and the problem of instable signals is obviously reduced; the position is very firm, the poor contact with the antenna element is avoided, the receiving stability of communication signals is guaranteed, and the integral performance is improved.

A reflect array antenna. The array includes a plurality of unit cells. Each cell includes a first dipole antenna having a first orientation and a first polarization; a second dipole antenna having a second orientation and a second polarization; and an amplifier input coupled inline to said first dipole antenna and output coupled inline to said second dipole antenna. The array further includes N first dipole antennas having a first orientation and a first polarization; M second dipole antennas having a second orientation and a second polarization; and a plurality of unit cells, each cell including an amplifier input coupled inline to a first dipole antenna and output coupled inline to a second dipole antenna. The second orientation and the second polarization are orthogonal to the first orientation and the first polarization. Each amplifier includes a transistor with an input terminal and first and second output terminals. Each input terminal is connected to the first dipole antenna and the output terminals are coupled to the second dipole antenna. The first and second terminals are adapted to be coupled to second and first terminals respectively of a neighboring cell in the array. A direct current bias for the array is applied via the second dipole antenna. Input bias for the transistors is applied via the first dipole antenna. A unique gate bias voltage for each transistor in the array is provided on a row-by-row basis via a voltage divider network. The voltage divider network includes (N−1) first resistors R_b connected in series to a first source of supply potential, where N is the number of rows in the array. Each of the resistors is connected to provide an input voltage to one of the transistors in the array. The resistive network further includes M second resistors R_L connected to a respective one of the second dipoles antennas, where M is the number of columns in the array. The array is fabricated by via a metallization pattern which is disposed on a first substrate to provide a chip. The chip is secured to a second substrate with a bonding agent. In the best mode, the bonding agent is an anisotropic electrically conductive bonding film that allows current to flow along a path orthogonal to a surface of the array while blocking current flow parallel to the surface of the array.

Even when an input is weak, an antenna amplifier device may achieve a high sensitivity while reducing a noise factor (NF). The antenna amplifier device includes an amplification circuit 7 for amplifying a high frequency signal received by an antenna A, and an NF matching circuit 5 provided between the amplification circuit 7 and the antenna A of which input impedance has a capacitance, the NF matching circuit 5 for switching the input impedance to the amplification circuit7 in accordance with a reception frequency. The NF matching circuit 5 includes a plurality of coils having different inductances, and at least one switch SW for connecting one of the coils, selected in accordance with the reception frequency, between the antenna A and the amplification circuit 7. A step-up coil SC is interposed between the NF matching circuit 5 and the amplification circuit 7.

The invention relates to an automobile antenna amplifier, in particular to an automatic gain vehicle active antenna amplifier. The amplifier comprises a chip for realizing the automatic gain control logical operation of a signal, a frequency selection circuit for processing a frequency modulation signal and an amplitude modulation signal respectively, an AGC circuit, an AGC threshold value adjusting circuit and an AGC response time adjusting circuit; and the automatic gain vehicle active antenna amplifier utilizes automatic gain control to eliminate voltage error between the output signal amplitude of the antenna amplifier and the needed output signal amplitude, improves the dynamic range of the amplifier to make the output signal stable and reception clear, overcomes the disadvantages of the unstable signal of the prior art and is free from distorting even if the amplifier is in extreme environment with rapidly-changed signal strength.

The invention discloses a fin-style vehicular antenna and a method for producing the same. The fin-style vehicular antenna comprises a top cover and a base which are connected to form an enclosed receiving space. A connection element, an antenna amplifier, a tuning element, a GPS antenna, and multiple socket connectors are disposed in the receiving space. A receiving antenna is disposed on the outer surface of the top cover. The feed line of the receiving antenna is connected with the antenna amplifier through the connection element and the tuning element. The top cover is prepared from a modified plastic material containing LDS laser powders. After the top cover is formed, three-dimensional layout is easily achieved by means of LDS (laser direct structuring) technology and convenient processes according to a designed antenna pattern. Injection molding is carried out by using laser inducing material and selective metallization is carried out after laser activation in order that a high-precision circuit intersection structure is formed. The receiving performance of the antenna is guaranteed and space is effectively utilized.

The invention discloses a track deception jamming system and a track deception jamming method for an airborne early-warning PD radar. The track deception jamming system comprises a receiving antenna,a transmitting antenna, an amplifier, a high-frequency shunt circuit, a radio frequency storage broadening module, a high-sensitivity receiving branch circuit, a pulse delay module, a low-sensitivityreceiving branch circuit, a square wave delay module, a square wave shaping module, a pulse gating module, a pulse modulation module, a microwave signal power amplification module and a power supply module. Through the design of two groups of track false targets related to radar signal repetition frequency, false tracks can be generated in front, back, left and right directions of a jammer and a shield target, and the purpose of supporting jamming is achieved.