US 9,813,032 B2
Negative impedance circuit
Lotfi Batel, Grenoble (FR); Jean-François Pintos, Saint Blaise du Buis (FR); and Lionel Rudant, Grenoble (FR)
Assigned to Commissariat à l'Energie Atomique et aux Energies Alternatives, Paris (FR)
Filed by Commissariat à l'Energie Atomique et aux Energies Alternatives, Paris (FR)
Filed on Nov. 21, 2016, as Appl. No. 15/357,863.
Claims priority of application No. 15 61698 (FR), filed on Dec. 2, 2015.
Prior Publication US 2017/0163224 A1, Jun. 8, 2017
Int. Cl. H03H 11/48 (2006.01); H03F 1/56 (2006.01); H03F 3/19 (2006.01); H03H 11/10 (2006.01); H04B 3/18 (2006.01)
CPC H03F 1/565 (2013.01) [H03F 3/19 (2013.01); H03H 11/10 (2013.01); H03H 11/48 (2013.01); H04B 3/18 (2013.01); H03F 2200/165 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A negative impedance circuit, comprising:
a first and a second bipolar transistors having a common collector, a base of the first transistor being connected to an emitter of the second transistor;
a third and a fourth bipolar transistors having a common collector, a base of the third transistor being connected to an emitter of the fourth transistor;
at least one first impedance formed of one or of a plurality of passive components coupling the common collector of the first and second transistors to the common collector of the third and fourth transistors, a base of the second transistor being coupled to the collector of the third and fourth transistors and a base of the fourth transistor being coupled to the collector of the first and second transistors; and
a second impedance at least inductive or capacitive, formed of one or a plurality of passive components, connecting the bases of the first and third transistors.