US 12,706,604 B2Granted

NPF radiofrequency device

AssigneesCommissariat A L'energie Atomique Et Aux Energies Alternatives, Institut Polytechnique De Grenoble, Centre National De La Recherche Scientifique, Universite Grenoble Alpes

InventorsDominique Morche, Sylvain Bourdel, Florence Podevin, Imadeddine Bendjeddou

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Abstract

An NPF radiofrequency device includes a first end terminal E1, four first branches BR10, BR11, BR12, BR13 connected to E1 and each including a capacitor, respectively C0, C1, C2, C3, having the same capacitance, including a first terminal and a second terminal connected to ground, and a switch arranged between E1 and the first terminal of the capacitor of the first branch; the device being designed to, in each first branch BR1i, close the switch at each time pT0+(i)T0/4, for T0/4, where p is a natural number and T0 is the period of the clock signal; the device including at least two successive second branches from among an ordered set of second branches BR20, BR21, BR22, BR23, the second branch BR2i including a second end terminal E2i, and each second branch BR2k of the device including, for each first branch, BR11, i=0 to 3, a switch between the first terminal of the capacitor Ci and the second branch, the device being designed to close the switch at each pT0+(i+k)T0/4, for T0/4.

Claims9

Dependent claims

A radiofrequency IQ quadrature signal generator device comprising a first end terminal (E1), four first branches BR10, BR11, BR12, BR13 connected to said first end terminal,

each first branch comprises a capacitor, respectively C0, C1, C2, C3, having the same capacitance, comprising a first terminal and a second terminal, said second terminal of the capacitor being connected to ground and a switch arranged between the first end terminal (E1) and the first terminal of the capacitor of said first branch;
said device being designed to, in each first branch BR1i, close the switch at each time pT0+(i)T0/4, for a time interval T0/4, where p is a natural number and T0 is the period of the clock signal;
said device wherein:
the radiofrequency IQ quadrature signal generator device comprises at least one pair of second branches comprising two successive second branches in a cyclic ordered list of four second branches BR20, BR21, BR22, BR23, the second branch BR2k comprising a second end terminal E2k, and each second branch BR2k of the device comprises, for each first branch, BR1i, i=0 to 3, a switch between the first terminal of the capacitor Ci of said first branch and said second branch, said device being designed to close said switch at each time pT0+(i+k) T0/4, for a time interval T0/4;
said radiofrequency IQ quadrature signal generator device being designed to receive, at input, an input signal of frequency fRF on said first end terminal (E1), to generate at least two quadrature signals, of frequency fRF, from the input signal and to deliver them, at output, on the second end terminals of said pair of second branches;
said second end terminals of the second branches of said pair being distinct from said first end terminal,
the frequencies fRF and 1/T0 being substantially equal;
for each second terminal of the device:
the signal delivered at output on said second terminal of the device is linked to the input signal by a transfer function comprising a filter function and a phase shift function.

6 more elements

A radiofrequency IQ quadrature signal combiner device comprising a first end terminal (E1), four first branches called BR10, BR11, BR12, BR13 connected to said first end terminal,

each first branch comprises a capacitor, respectively C0, C1, C2, C3, having the same capacitance, comprising a first terminal and a second terminal, said second terminal of the capacitor being connected to ground and a switch arranged between the first end terminal (E1) and the first terminal of the capacitor of said first branch;
said device being designed to, in each first branch BR1i, close the switch at each time pT0+(i)T0/4, for a time interval T0/4, where p is a natural number and T0 is the period of the clock signal;
said radiofrequency IQ quadrature signal combiner device wherein:
the device is an NPF device and comprises at least one pair of second branches comprising two successive branches in a cyclic ordered list of second branches BR20, BR21, BR22, BR23, the second branch BR2k comprising a second end terminal E2k, and each second branch BR2k of the device comprises, for each first branch, BR1i, i=0 to 3, a switch between the first terminal of the capacitor Ci of said first branch and said second branch, said device being designed to close said switch at each time pT0+(i+k)T0/4, for a time interval T0/4;
said device being designed to receive, at input, at least two quadrature signals of frequency fRF, one on the second end terminal of one of the second branches of said pair of second branches, the other on the second end terminal of the other of the second branches of said pair of second branches, to combine them and to deliver, at output, on said first end terminal (E1), a signal of frequency fRF resulting from the combination of said quadrature signals;
said second end terminals of the second branches of said pair being distinct from said first end terminal;
the frequencies fRF and 1/T0 being substantially equal;
each signal received at input on a second terminal of said pair being linked to the signal delivered at output on the first terminal by a transfer function comprising a filter function and a phase shift function.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/003,509Filed 27 Dec 2024
Priority: FR 231534827 Dec 2023
Published: US 2025/0219636 A13 Jul 2025
Granted: 11 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

H03D 7/1466
With transistors: passive mixer arrangements
H03K 17/56
Characterised by the components used: by the use, as active elements, of semiconductor devices
H03D 7/1458
With transistors: double balanced arrangements, i.e. where both input signals are differential
H03D 7/165
Multiple-frequency-changing: at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature