Abstract: A hand-held satellite mobile phone terminal contains an antenna deployment element with a small antenna attached to the tip area of the antenna deployment element The antenna deployment element is usually folded and stored on the rear side surface of the body of the hand-held satellite mobile phone terminal, and is deployed to become vertical to the rear side surface of the hand-held satellite mobile phone terminal body when it is used. The antenna deployment element is attached to the body of the hand-held satellite mobile phone terminal through a rotational axis so that the small antenna attached to the antenna deployment element can be rotated after deployment in order for its plane to become parallel with the ground surface. Also, the hand-held satellite mobile phone terminal is usable both in a satellite communication system and in a terrestrial cellular communication system.

Abstract: A multi-beam feeding apparatus according to the present invention is a feeding apparatus for a multi-beam antenna comprising a reflector and a primary radiator comprising a plurality of element antennas, and the apparatus is provided with a plurality of beam forming networks for setting an excitation distribution relative to the element antenna necessary for every beam. Each beam forming network is connected via a combiner (a divider) disposed to every of all the element antennas. According to this construction, not only there is such an advantage that a variation of capacity of communication between the beams and the like can be flexibly responded, but also there are such effects that a beam forming network can be so simply constructed that the same systems are only combined, a power can be more effectively used, such a problem as a heat generation and the like can be reduced. Moreover, a plurality of missions can be easily fused.

Abstract: An deployable truss structure is herein disclosed in which the deterioration of an deployable reliability with the increase in the number of constitutional parts is prevented and in which even if the number of the mechanical parts of the whole structure is increased, a stable deployable reliability is established with regard to one deploying operation of the structure. A dividable asynchronous deployable truss structure is constituted of a plurality of segments and a segment binding deployable truss structure. The dividable asynchronous deployable truss structure independently carries out the deployment as one deployment unit comprising the segment and two side structures in the segment binding deployable truss structure directly bound thereto for every deployment unit, whereby the number of parts involved in one deploying operation can be decreased and a high deployment reliability can be ensured.