A space vehicle electromechanical system may employ an architecture that enables convenient and practical testing, reset, and retesting of solar panel and antenna deployment on the ground. A helical antenna winding fixture may facilitate winding and binding of the helical antenna.

An antenna device according to an embodiment includes an antenna including a power feeding point, a matching circuit having a variable impedance, a loop type probe being installed near the power feeding point and receiving a radio wave radiated from the antenna, a power detector detecting electric power of the radio wave received by the loop type probe, and a control circuit controlling an impedance of the matching circuit on the basis of power information output from the power detector.

A multiband antenna including a feed point, a helical radiating element galvanically connected to and fed by the feed point, the helical radiating element resonating in a Very High Frequency range and an elongate radiating element arranged coaxially within the helical radiating element and galvanically connected to and fed by the feed point, the elongate radiating element extending along only a portion of the helical radiating element, the elongate radiating element having a first resonant frequency and a second resonant frequency, the elongate radiating element operating as a quarter-wavelength monopole at the first resonant frequency and as an eighth-wavelength monopole at the second resonant frequency.

An antenna device which includes a plurality of antennas in a common case and is capable of achieving downsizing while suppressing a decrease of an antenna gain, is provided. An antenna device includes a TEL antenna and a capacity loaded element in a common case. The capacity loaded element is located above the TEL antenna. A length of the capacity loaded element is a positive integer multiple of one-half a wavelength of a PCS band. The TEL antenna is arranged so as to avoid a voltage maximum point of a standing wave, of the PCS band, generated in the capacity loaded element.

A system for radio frequency transmission through a window is provided. The system may include a first wireless coupler, a second wireless coupler, and an antenna. The first wireless coupler may be attached to a first side of the window and configured to transmit or receive the radio frequency signal. The second wireless coupler attached to a second side of the window and aligned with the first wireless coupler. The first wireless coupler may be configured to transmit or receive the radio frequency signal from the first wireless coupler to the second wireless coupler through the window. The antenna may be electrically connected to the second wireless coupler.

An antenna comprising at least one antenna bay comprising an input port; a feed network and a radiative component is provided. The feed network has a center node connected to the input port; a printed circuit board (PCB), comprising an active surface having at least two feed micro-strips and a reference surface having at least two first reference micro-strips, the reference surface being opposite to the active surface. The radiative component has at least two dipoles, each of the at least two dipoles being shaped as a helix and being uniformly disposed about an antenna axis, each of the at least two dipoles comprising a dipole feeded portion connected to one of the at least two feed micro-strips and a dipole reference portion connected to one of the at least two first reference micro-strips.

A vehicle including a plurality of antennas, the vehicle including: a roof panel disposed on an upper side of the vehicle; a first roof rail and a second roof rail arranged side by side on the roof panel; and a first antenna module and a second antenna module disposed on the roof panel. The first antenna module is provided in a coupling area, in which the first roof rail is coupled to the roof panel, and the first antenna module is inserted into the first roof rail. The second antenna module is provided in a coupling area, in which the second roof rail is coupled to the roof panel, and the second antenna module is inserted into the second roof rail. The plurality of antennas are disposed in the first and second antenna modules in a distributed manner.

A passive radiofrequency transponder comprises a radiating dipole antenna consisting of a single-strand helical spring having an axis, a median plane, a pitch and a diameter for a given wire diameter, and an electronic portion located inside the radiating antenna. The electronic portion comprises an electronic chip electrically connected to a primary antenna that is electromagnetically coupled to the radiating antenna. The primary antenna has an axis parallel to the axis of the radiating antenna and a median plane superposed with the median plane of the radiating antenna. The primary antenna is circumscribed by a cylinder the diameter of which is larger than one third of the inside diameter of the radiating antenna. The radiofrequency transponder is characterized in that, in a first region of the radiating antenna, in which the latter is not located plumb with the electronic portion, the first helix pitch of the radiating antenna is larger than the second helix pitch of the radiating antenna that does not form part of this first region.

An electronic device is provided which includes an outer housing including a first surface, a second surface, and a side surface, wherein a coupling part is formed at a periphery of the outer housing, a fixing part, a coupling member disposed such that the fixing part is coupled to and supported by the outer housing, a printed circuit board seated inside the outer housing, a processor mounted on the printed circuit board, and a communication module mounted on the printed circuit board and electrically connected with the processor. The coupling member is coupled to one end of the fixing part and to the coupling part, and at least one side of the coupling member is connected with the communication module through a communication signal line such that the coupling member operates as an antenna radiator.

A broadband quadruple helical circularly-polarized antenna for receiving circularly polarized GNSS signals includes a dielectric cylinder oriented along a vertical axis; four spiral conductors wrapped around the cylinder; the four spiral conductors divided into an upper longitudinal section and a lower longitudinal section; and inductors connecting corresponding spiral conductors of the top and lower longitudinal sections. The spiral conductors in each section have a constant winding angle around the cylinder. The winding angle of all of the conductors in the same longitudinal section is the same. The winding angle of the upper longitudinal section is smaller than the winding angle of the bottom longitudinal. An excitation circuit is connected to the conductors. A third longitudinal section is below the lower longitudinal section, wherein the third longitudinal section includes conductors wound in an opposite direction relative to the lower longitudinal section.