Matches 1 - 27 out of 27
Match Document Document Title
7236212 System and method for providing a low power receiver design  
An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation...
7092043 Fully integrated tuner architecture  
An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation...
6785527 Conversion spur avoidance in a multi-conversion radio frequency receiver  
A method of avoiding conversion spurs in a multi-conversion radio frequency receiver having a first local oscillator, an intermediate frequency filter and a second local oscillator in series...
6724440 Tuning apparatus for a frequency synthesizer tuner  
A tuner for receiving a video broadcast signal comprises commendable circuits ( 6, 7, 8, 17 ) to select a tuned frequency, the tuner comprising a bus interface ( 21 ) receiving data bytes and among...
EP0952667B1 Tuning apparatus  
Abstract of EP0952667 A tuner for receiving a video broadcast signal comprises controllable circuits (6,7,8,17) to select a tuned frequency, a bus interface (21) receiving data bytes and among...
6625436 Radio receivers  
A heterodyne radio receiver, having a broadband IF, in which the outputs from the second down-conversion mixer of the receiver are high pass filtered to select unwanted signals and low pass...
EP0622904B1 PLL circuit having a multiloop, and FM receiving method and apparatus able to utilize the same  
Abstract of EP0622904 PLL circuits which have both the merits of the analog phase control, in which the good C/N ratio can be realized, and the merits of the digital phase control, in which the...
EP0952667A1 Tuning apparatus  
A tuner for receiving a video broadcast signal comprises controllable circuits (6,7,8,17) to select a tuned frequency, a bus interface (21) receiving data bytes and among those data bytes, bytes...
5937338 Scanning radio receiver  
A scanning radio receiver of triple conversion superheterodyne tuning, having a CPU and a keyboard. The CPU has a programmable memory to store frequencies received by the scanning radio receiver. A...
5825817 Radio wave measuring apparatus for digital communication system  
In one aspect of this invention, a receiver sequentially demodulates sequentially received burst signals into original digital data signals. A data extraction unit extracts base station information...
5794131 Reducing or eliminating radio transmitter mixer spurious outputs  
In radio transmitting equipment that develops a carrier frequency using a mixer, techniques are used to "shift" or "hide" spurious mixer outputs so that they do not significantly degrade spectral...
5745848 Method and apparatus for eliminating interference caused by spurious signals in a communication device  
An apparatus for eliminating interference caused by spurious signals includes a reference oscillator (127) and a controller (114). Circuitry (500) in a communication device (104) incorporating the...
5640697 Wideband multiple conversion receiver system with means for avoiding receiver spurs by combined switching of multiple local oscillator frequencies  
A multiple conversion receiver system capable of avoiding receiver spurs by combined switching of multiple local oscillator frequencies, including combinations of high-side and low-side injection...
5524281 Apparatus and method for measuring the phase and magnitude of microwave signals  
A measurement system is provided which comprises: source circuit for receiving feedback signals and for providing respective signals at respective discrete frequencies in a prescribed microwave...
5517685 PLL circuit having a multiloop, and FM receiving method and apparatus able to utilize the same  
The PLL circuit provides both the advantages of analog phase control, in which a good C/N ratio can be realized, and the advantages of digital phase control, in which broad-band lock can be...
EP0502449B1 Frequency converter  
Abstract of EP0502449 The invention relates to a frequency converter with an output signal whose frequency can be shifted in relation to the frequency of an input signal (SE). A mixing stage (M1)...
5428836 Radio receiver for forming a baseband signal of time-varying frequencies  
A radio receiver, and associated method therefor, for generating a baseband signal having signal component portions of time-varying frequencies. The oscillating signal generated by at least one of...
EP0622904A2 PLL circuit having a multiloop, and FM receiving method and apparatus able to utilize the same.  
PLL circuits which have both the merits of the analog phase control, in which the good C/N ratio can be realized, and the merits of the digital phase control, in which the broad-band lock can be...
5230094 Method and apparatus for intermediate frequency selection in a heterodyne receiver  
In a heterodyne receiver having more than one selectable receive frequency and having at least one intermediate frequency circuit (102) capable of operation on at least two intermediate...
5212828 Receiver apparatus  
A receiver apparatus having a mixer circuit, an oscillator circuit and a tuner circuit is provided with a trap circuit, interposed between the tuner circuit and the mixer circuit, for removing...
EP0502449A1 Frequency converter.  
The invention relates to a frequency converter with an output signal whose frequency can be shifted in relation to the frequency of an input signal (SE). A mixing stage (M1) is provided to which...
4991226 FM detector with deviation manipulation  
An FM detection system receives an FM input signal containing a plurality of carrier bands, including a tuned carrier band. The tuned carrier band is separated from side carrier bands by a...
4905305 Method and apparatus for controlling the frequency of operation and at least one further variable operating parameter of a radio communications device  
The operating frequency of a radio transceiver and at least one further variable operating parameter of the radio transceiver are controlled in accordance with pre-stored information. Transmit...
4893300 Technique for reducing distortion characteristics in fiber-optic links  
The present invention relates to a technique for suppressing intermodulation products introduced by nonlinearities of a laser in a multicarrier Freqeuncy Division Multiplexed (FDM) fiberoptic link....
4879758 Communication receiver system having a decoder operating at variable frequencies  
A paging receiver and a method for minimizing spurious interference signals in the radio frequency (RF) stages and the intermediate frequency (IF) stages. The paging receiver includes a receiving...
4843637 Tuner circuit  
A tuner circuit for converting the frequency of an input signal with a local oscillator to a predetermined channel frequency. The tuner circuit includes an attenuation circuit responsive to the...
4761825 TVRO earth station receiver for reducing interference and improving picture quality  
A method of reducing terrestrial interference is provided for a TVRO earth station receiver comprising a super-heterodyne circuit including a voltage-controlled oscillator (VCO), a mixer for...
Matches 1 - 27 out of 27