Matches 1 - 29 out of 29
Match Document Document Title
7398053 Method and apparatus for stability margin determination in a repeater  
A method and device for determining the stability margin of a RF repeater. The method is carried out in two steps, viz. establishing the amplification of the repeater as a function of the frequency...
7346311 Single frequency repeater  
A novel single frequency repeater is disclosed that eliminates the problems of feedback and concurrent oscillation. The single frequency repeater of the present invention comprises a backplane, a...
7088953 Coverage area signature in an on-frequency repeater  
A system operates to adaptively control the stability of an on-frequency repeater. A unique signature is imposed on RF signals transmitted by the repeater, and RF signals received by the repeater...
7035321 Monitoring stability of an on-frequency repeater  
A system provides evaluation of stability of an on-frequency repeater. A unique signature is imposed on RF signals transmitted by the repeater, and RF signals received by the repeater are analyzed...
EP1037719B1 COMPOSITION AND PROCESS FOR MULTI-PURPOSE TREATMENT OF METAL SURFACES  
Abstract not available
6934511 Integrated repeater  
An integrated repeater includes a housing having opposing sides, a donor antenna mounted on one of the opposing sides, a null antenna mounted on the other of the opposing sides, and repeater...
6839539 RF signal repeater in mobile communications systems  
A RF signal repeater system is added to a wireless communications network which increases user data rates at the periphery of the cellular coverage area by boosting the downlink (base station to...
6807399 Transmitting/receiving apparatus of repeater system  
A transmitting/receiving apparatus of a repeater system in which a signal received by the receiving apparatus from a base station is amplified to a high-powered transmission signal by the...
6802913 Composition and process for multi-purpose treatment of metal surfaces  
A multipurpose treatment composition for metal surfaces comprises phosphate ions, fluorometallate ions, water soluble polymers containing substituted aminomethylene moieties bonded to benzene rings...
6745007 Method and apparatus for stability margin determination in a repeater  
A method and device for determining the stability margin of a RF repeater. The method is carried out in two steps, viz. establishing the amplification of the repeater as a function of the frequency...
6745003 Adaptive cancellation for wireless repeaters  
A repeater system has at least one donor antenna element for communicating with a base station and at least one link antenna element for communicating with a remote station. A radio frequency...
6731904 Side-to-side repeater  
A modular repeater includes a housing having a pair of substantially 180° oppositely facing surfaces. At least one antenna element is mounted to each of these surfaces for radiating energy in a...
EP1037719A1 COMPOSITION AND PROCESS FOR MULTI-PURPOSE TREATMENT OF METAL SURFACES  
Abstract not available
5974301 Frequency cancelling system and method  
A frequency cancelling system is disclosed which improves reception of a communication signal which is transmitted at a communication frequency in the presence of an interference signal which...
5963847 Booster system  
A booster system for transmitting a received wave after amplifying it comprises a receiving antenna section, a carrier combining section, a transmitting section, a transmitting antenna section and...
5961809 Chromium-free process for improving paint adhesion after thin-layer anodization  
A process for improving the adherence of paint applied after thin-film anodization is characterized in that the anodized metal surfaces are brought into contact with an aqueous solution containing...
5868872 Chromium-free process for the no-rinse treatment of aluminum and its alloys and aqueous bath solutions suitable for this process  
Described is a process using a no-rinse technique for the production of a chromium-free conversion layer on the surface of aluminum and its alloys by treating with an aqueous solution having a pH...
5400363 Quadrature compensation for orthogonal signal channels  
A system for processing inphase and quadrature data channels, such as a Costas loop QPSK demodulator, employs an additional feedback loop for adjustment of phase offset between carrier reference...
5369782 Radio relay system, including interference signal cancellation  
A radio relay system including a water-proof conductor housing on which is located a pair of antennas, one antenna being used for transmitting and receiving radio carrier wave signals of a first...
EP0187672B1 One frequency repeater for a digital microwave radio system with cancellation of transmitter-to-receiver interference  
Abstract not available for EP0187672 Abstract of corresponding document: US4701935 A digital microwave radio repeater using the same carrier frequency for the transmitter and the receiver carriers...
5023930 Booster with detectable boost operation  
An apparatus and method for selecting a number of cellular radio channels to be boosted in a given geographical area provides either F1-F1 or F1-F2 operation. The signals can be boosted at the same...
5003617 Simulcast broadcasting system and method  
A simulcast broadcast system wherein two signals (103 and 106) intended for simultaneous broadcast are transmitted from a source site (100) to remote sites (200) discrete from one another. At the...
4776032 Repeater for a same frequency with spillover measurement  
The system for measuring the spillover signal from a transmitter to a receiver in a same frequency repeater or a booster has a frequency conversion device which slightly offsets the transmission...
EP0187672A2 One frequency repeater for a digital microwave radio system with cancellation of transmitter-to-receiver interference.  
Abstract not available for EP0187672 Abstract of corresponding document: US4701935 A digital microwave radio repeater using the same carrier frequency for the transmitter and the receiver carriers...
4479245 Same frequency repeater for a multiple repeater system  
This invention is directed to a same frequency repeater (SFR) for use in a multiple SFR system in which only one SFR at a given time is allowed to retransmit a received signal thereby preventing...
4475246 Simulcast same frequency repeater system  
The simulcast communication system includes a transmitting station for transmitting a first signal at a given frequency and a same frequency repeater (SFR) having a receiver for receiving the first...
4475243 Isolation method and apparatus for a same frequency repeater  
An apparatus for minimizing the spillover signal from the transmitter to the receiver in a same frequency repeater includes a mechanism for generating a receiver first injection signal carrying the...
4406016 VHF Sensor in-band radio relay  
Disclosed is an in-band, non-sampling, real time VHF radio relay or signal epeater for use in two-way, multi-hop remote sensor data links. Each signal repeater comprises a transceiver which...
4383331 Method and means of preventing oscillations in a same-frequency repeater  
A same-frequency repeater used in a system that has at least one other same-frequency repeater is protected against oscillation resulting from feedback of signals broadcast by the same-frequency...
Matches 1 - 29 out of 29