Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1993-09-09
1995-11-07
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455318, 455325, H04B 128
Patent
active
054654190
ABSTRACT:
An arrangement for frequency conversion of an input signal having a frequency f.sub.1 with an oscillator signal having a frequency f.sub.2 to form an intermediate frequency signal of frequency f.sub.3 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 f.sub.2. Circuits are inserted into the signal infeed and signal outfeed paths and have transmission properties for the frequency f.sub.1 and blockage properties for the frequency f.sub.3 in the infeed path, as well as transmission for the frequency f.sub.3 and blockage for the frequency f.sub.1 in the outfeed path.
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Patent Abstracts of Japan, Apr. 16, 1987, vol. 11, No. 112, Toshiki Miyasaka "Single Mixer".
Shiga et al, "MMIC Family for DBS Downconverter with Pulse-Doped GaAs MESFETs" (IEEE), Oct. 1991, pp. 139-142.
Eisenzopf Reinhard J.
Siemens Aktiengesellschaft
Vo Nguyen
LandOfFree
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