Arrangement for frequency conversion of an input signal with an oscillator signal to form an intermediate frequency signal
Patent 5465419 Issued on November 7, 1995. Estimated Expiration Date: 
September 9, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 9, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFrequency converter Transistor mixer for ultra-high frequency transmitters Communication system with adaptive transceivers to control intermodulation distortion Modified cascode mixer circuit Patent #: 5083050 InventorAssigneeApplicationNo. 118225 filed on 09/09/1993US Classes:455/333, Transistor or integrated circuit455/318, With specified local oscillator structure or coupling455/325Including distributed electrical parameter structureExaminersPrimary: Eisenzopf, Reinhard J.Assistant: Vo, Nguyen Attorney, Agent or FirmForeign Patent References
International ClassH04B 001/28Foreign Application Priority Data1992-09-30 EPAbstractAn arrangement for frequency conversion of an input signal having a frequency f1 with an oscillator signal having a frequency f2 to form an intermediate frequency signal of frequency f3 has a high intermodulation steadiness given a simultaneously low power consumption. A switch element is switched high-impedance and low-impedance parallel to a signal-carrying path with a control source having the oscillator frequency f2. Circuits are inserted into the signal infeed and signal outfeed paths and have transmission properties for the frequency f1 and blockage properties for the frequency f3 in the infeed path, as well as transmission for the frequency f3 and blockage for the frequency f1 in the outfeed path.Other References
Field of SearchIn radio frequency amplifier, intermediate frequency amplifier or converter circuitFrequency modifying or conversion Unwanted oscillation or radiation prevention With specified local oscillator structure or coupling With particular coupling Including distributed electrical parameter structure With balanced mixer Stripline Transistor or integrated circuit Push-pull In a single envelope or with common active element (e.g., autodyne) Plural common electrode Particular frequency conversion structure or circuitry Homodyne (i.e., zero beat or synchrodyne reception) With amplitude limiter AMPLITUDE MODULATOR PHASE MODULATOR L-C oscillator type | |
