29-05-2014 дата публикации
Номер: US20140145778A1
Принадлежит:
A sub-harmonic electronic mixer has at least one field effect transistor (FET) having a gate, source, and drain; and a useful signal input at a useful frequency; and a local oscillator input. The input receives the oscillator signal at a frequency being an integral fraction of the useful frequency, plus or minus a mixing frequency to provide a signal output. A gate of the FET and/or the drain and/or the source receives the useful signal to generate a gate-source voltage and/or a drain-source voltage whereby the gate receives the local oscillator signal to generate a gate-source voltage, and the drain or a source receives the local oscillator signal to generate a drain-source voltage. A phase shift is introduced between the signal received at the gate and the signal received at the drain or source of the FET. 1. An electronic mixer for generating a mixed signal (IF) by mixing a local oscillator signal (LO) with a useful signal (RF) comprising{'b': 1', '50', '51, 'at least one field effect transistor (, , ) which has at least one gate (G), at least one source (S) and at least one drain (D),'}{'b': 4', '4', '4, 'sub': 'RF', 'a useful signal input (, ′, ″) for feeding in the useful signal with a useful frequency (v),'}{'b': '12', 'sub': LO', 'RF', 'IF, 'a local oscillator signal input () for feeding in the local oscillator signal (LO), which is so designed that in operation of the mixer it receives a local oscillator signal (LO) whose local oscillator frequency (v) is an integral fraction of the useful frequency (v) of the useful signal, that is reduced or increased by a mixing frequency (v) of the mixed signal (IF), and'}a signal output at which the mixed signal (IF) is present in operation of the mixer,characterised in that{'sub': 'GS', 'b': 1', '50', '51', '4', '4, 'the mixer is so adapted that in operation of the mixer for generating a gate-source voltage (U) and/or a drain-source voltage at least one gate (G) of the field effect transistor (, , ) and/or the drain ( ...
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