A pulse generator that includes a communications module is disclosed herein. The communication module includes a transceiver and an antenna circuit. The antenna circuit includes a first pathway having a capacitor and a second, parallel pathway including a capacitor, and a resistor, and a radiating element arranged in series. The antenna circuit is tuned to have a resonant frequency corresponding to a desired transmission frequency and a bandwidth corresponding to shifts in the resonant frequency arising from the implantation of the antenna.

A pulse generator that includes a communications module is disclosed herein. The communication module includes a transceiver and an antenna circuit. The antenna circuit includes a first pathway having a capacitor and a second, parallel pathway including a capacitor, and a resistor, and a radiating element arranged in series. The antenna circuit is tuned to have a resonant frequency corresponding to a desired transmission frequency and a bandwidth corresponding to shifts in the resonant frequency arising from the implantation of the antenna.

Antenna having a magnetic core (1) and a coil (2), which is wound around the magnetic core (1), the magnetic core (1) having at least two first partial cores (1.1) and at least one second partial core (1.2), the at least two first partial cores (1.1) being arranged one behind the other in a longitudinal direction (8) of the magnetic core (1), each of the at least two first partial cores (1.1) having a lateral side, the at least two first partial cores (1.1) having a first first partial core (1.1) and a second first partial core (1.1), the at least one second partial core (1.2) having a first second partial core (1.2), which is arranged on the lateral side of the first first partial core (1.1) and on the lateral side of the second first partial core (1.1) such that the first second partial core (1.2) overlaps at least partially with the first first partial core (1.1) and at least partially with the second first partial core (1.1).

Antenna having a magnetic core (1) and a coil (2), which is wound around the magnetic core (1), the magnetic core (1) having at least two first partial cores (1.1) and at least one second partial core (1.2), the at least two first partial cores (1.1) being arranged one behind the other in a longitudinal direction (8) of the magnetic core (1), each of the at least two first partial cores (1.1) having a lateral side, the at least two first partial cores (1.1) having a first first partial core (1.1) and a second first partial core (1.1), the at least one second partial core (1.2) having a first second partial core (1.2), which is arranged on the lateral side of the first first partial core (1.1) and on the lateral side of the second first partial core (1.1) such that the first second partial core (1.2) overlaps at least partially with the first first partial core (1.1) and at least partially with the second first partial core (1.1).

The invention relates to antenna technology, especially, to electrically small transmitting and receiving antennas for operation at frequencies ELF-VHF. Magneto-dielectric dipole, being a transmitting and receiving antenna element, configured to be matched to a resonant frequency f, the antenna element comprised of an inductive winding configured to be connected to a power source and of an elongated magnetic core inserted through the inner space of the inductive winding and comprised of a ferrite material having mass and parameters sufficient to retain magnetic properties of the ferrite material within a magnetic field induced by the inductive winding when the inductive winding is fed by an electric current equivalent to a power of 0.0001 watts or higher at the resonant frequency f. Use of the invention improves mobility and performance of the antenna element when used either as a part of mobile radio station onboard a fast-moving vehicle or outdoors exposed to gusty winds.

The invention relates to antenna technology, especially, to electrically small transmitting and receiving antennas for operation at frequencies ELF-VHF. Magneto-dielectric dipole, being a transmitting and receiving antenna element, configured to be matched to a resonant frequency f, the antenna element comprised of an inductive winding configured to be connected to a power source and of an elongated magnetic core inserted through the inner space of the inductive winding and comprised of a ferrite material having mass and parameters sufficient to retain magnetic properties of the ferrite material within a magnetic field induced by the inductive winding when the inductive winding is fed by an electric current equivalent to a power of 0.0001 watts or higher at the resonant frequency f. Use of the invention improves mobility and performance of the antenna element when used either as a part of mobile radio station onboard a fast-moving vehicle or outdoors exposed to gusty winds.

Short, dual-driven groundless antennas are provided. One of the antennas includes a tubular outer conductor, a tubular inner conductor, and an electrical connector that electrically connects an opposite end of the outer conductor to the exterior of the inner conductor. The inner conductor is longitudinally disposed within the hollow axial interior of the outer conductor such that an axial gap exists between the radially inner surface of the outer conductor and the radially outer surface of the inner conductor, and the inner conductor runs at least to the opposite end of the outer conductor. Electrical signals are connected to a driven end of both the outer and inner conductors, where these signals supply power to/from the antenna whenever it is used as a transmitter/receiver, and neither of these signals needs to be connected to an electrical ground.

Short, dual-driven groundless antennas are provided. One of the antennas includes a tubular outer conductor, a tubular inner conductor, and an electrical connector that electrically connects an opposite end of the outer conductor to the exterior of the inner conductor. The inner conductor is longitudinally disposed within the hollow axial interior of the outer conductor such that an axial gap exists between the radially inner surface of the outer conductor and the radially outer surface of the inner conductor, and the inner conductor runs at least to the opposite end of the outer conductor. Electrical signals are connected to a driven end of both the outer and inner conductors, where these signals supply power to/from the antenna whenever it is used as a transmitter/receiver, and neither of these signals needs to be connected to an electrical ground.

An eLORAN receiver may include an antenna and eLORAN receiver circuitry coupled to the antenna. The antenna may have a ferromagnetic core including a ferromagnetic medial portion and ferromagnetic arms extending outwardly from the ferromagnetic medial portion, a respective electrically conductive winding surrounding each of the ferromagnetic arms, and an electrically conductive patch element adjacent the ferromagnetic core.

An eLORAN receiver may include an antenna and eLORAN receiver circuitry coupled to the antenna. The antenna may have a ferromagnetic core including a ferromagnetic medial portion and ferromagnetic arms extending outwardly from the ferromagnetic medial portion, a respective electrically conductive winding surrounding each of the ferromagnetic arms, and an electrically conductive patch element adjacent the ferromagnetic core.