Abstract: A method for making a memorandum in a mobile communications device includes displaying a label on a screen of the mobile communications device, displaying a note in the label according to a first user instruction, and attaching a multimedia data corresponding to the note according to a second user instruction.

Abstract: A method for adjustment of a radio-frequency circuit by impedance loading features includes designing a plurality of test fixtures each corresponding to an impedance loading area according to a predefined operating frequency band, coupling each of the plurality of test fixtures to a test point of the radio-frequency circuit for measuring a plurality of radio-frequency characteristic sets, determining an optimal impedance loading area of the radio-frequency circuit according to the plurality of radio-frequency characteristic sets, and adjusting the radio-frequency circuit according to the optimal impedance loading area.

Abstract: A metal complementary element of a grounded self-complementary antenna for an electronic device and a metal grounding element of the electronic device contact with each other, are electrically connected to each other or are a same article so as to substantially enlarge an area of a grounding end of the self-complementary antenna to enable the self-complementary antenna to have the good radiation efficiency and the broader bandwidth such that the radio signal transmission effect of the electronic device can be elevated.

Abstract: A wave receiving apparatus comprising a reflector; a conduit for guiding waves, having an open end allowing entrance of polarized waves reflected by the reflector; a septum polarizer monolithically formed with the conduit for effecting a circular-linear polarization conversion; a pair of signal collectors pointing to the same direction or towards each other and positioned at a distance of quarter-wavelength away from the rear end of the conduit for receiving wave signals; and a circuitry module, positioned sidelong next to said conduit seen from said open end into said conduit, to which the signal collectors are electrically connected for handling wave signals.