Abstract: A sheet-like dipole antenna includes a substrate (1), an F-shape antenna (2), and a cable (3). The substrate (1) has a copper clad surface (11) and a slot (12). An insulating film (13) is provided on the copper clad surface (11) and the slot (12). A first soldering region (14), a second soldering region (15), and a third soldering region (16) are positioned adjacent to the slot (12). The cable (3) has a core (31) coated with an insulating layer (32). The insulating layer (32) is coated with a grounding layer (33). The grounding layer (33) is coated with an outer skin (34). One end of the cable (3) is electrically connected to a connector (35). The core (31) is connected to the second soldering region (15). The grounding layer (33) is soldered to the third soldering region (16).

Abstract: An LED lamp with replaceable light unit according to the invention includes a heat dissipation housing, a metal connector, a driver circuit board, a light unit slice, a pad and a shade. The heat dissipation housing has an opening at one end and a joint portion at another end. The metal connector is disposed to the joint portion of the heat dissipation housing. The driver circuit board disposed inside the heat dissipation housing to electrically connect with metal connector. The light unit slice and the pad are disposed inside the opening, and the light unit slice is electrically connected with the driver circuit board. The shade is disposed inside the opening. The LED lamp with replaceable light unit can be realized by the assembly of the above elements according to the different preferred embodiment of the present invention.

Abstract: A surface mounted planner antenna apparatus includes an antenna and a circuit board. The antenna includes a base, a radiation metal plate arranged on a top face of the base, and a ground metal plate arranged on a bottom face of the base. A through hole is defined from the radiation metal plate and passed through the base to the ground metal plate. A signal feeder is arranged in the through hole and electrically connected to the radiation metal plate but electrically insulated with the ground metal plate. The circuit board is attached on the bottom face of the base and includes an upper face and a lower face, the upper face includes an area for binding with the ground metal plate on the bottom face of the base, and the lower face includes a first pad and a signal feeding trace electrically connected with the signal feeder.

Abstract: An extremely miniaturized digital TV signal reception antenna built in a mobile device includes a substrate, an antenna unit and a switch unit. The substrate is provided with a plate having a grounding metallic surface and a first clearance surface. A second clearance surface is provided on the same side of the grounding metallic surface with a metallic microstrip line for electrically connecting to an output end of the switch unit. Input ends of the switch unit are electrically connected with a plurality of leads of the first clearance surface. The other ends of the plurality of leads are electrically connected with the antenna unit. Finally, when a tuner of a portable digital television switches the channels, signals of the switched channel are simultaneously output to the switch unit. According to the frequency of that channel, the switch unit automatically switches to a suitable range of bandwidth for receiving the digital TV signals, thereby performing the reception of the digital TV signals.

Abstract: A miniature combo built-in antenna structure built in a personal navigation device (PND) includes a substrate, a first antenna unit and a second antenna unit. The first antenna unit is a signal receiving antenna of a global positioning system (GPS), and the second antenna unit is a signal receiving antenna of a traffic message channel (TMC) receiving module. The first and second antenna units are integrated into a substrate and built in the GPS, for receiving GPS signals as well as related information of road conditions and weather.

Abstract: A modularized planar antenna structure includes an antenna unit, a connection unit, a circuit board and a cover. The modularized planar antenna structure connects the antenna unit and circuit board. The antenna unit includes a signal feeder electrically connected the circuit board at end thereof such that the antenna unit is vertical to the circuit board. The cover is assembled to the circuit to protect the circuit board from electromagnetic interference or strike of external article. When the antenna structure is assembled to a main circuit board of an electronic device, the circuit board can be directly assembled to the main circuit board of an electronic device and the circular-polarized antenna unit points toward zenith direction to receive satellite signal.

Abstract: A circularly polarized patch antenna assembly having a relatively compact volume includes a substrate, a radiation metal piece, a grounded metal piece and a signal-inputting body. A plurality of frequency down-conversion metal pieces in a form of elongate stripe extends from four sides of the grounded metal piece, thereby to reduce the resonant frequency. The frequency down-conversion metal pieces are adhered on the side face of the substrate, so that the frequency down-conversion metal piece on one side face is arranged diagonally with respect to the frequency down-conversion metal piece on the opposite side face. When the resonant frequency of the antenna is to be reduced, the position and the area of the frequency down-conversion metal piece can be adjusted but the increased area of the frequency down-conversion metal piece cannot be larger than a half area of the side face of the substrate. Alternatively, the length of the frequency down-conversion metal piece can be increased.

Abstract: A radio frequency and microwave module for simultaneously transmitting data and audio signal comprises a transmitting unit and a receiving unit. The transmitting unit has two pre-amplifier circuit two voltage-controlled oscillators (VCO), a phase-locked loop (PLL), two low pass filters (LPF) , two amplifiers, a power combiner, a ceramic filter and a transmitting antenna. The receiving unit has a receiving antenna, a ceramic filter, a first low noise amplifier (LNA), a first mixer, an amplifier, a third VCO, a PLL, a low-pass filter, a channel filter, an IF amplifier, a phase shifter, a second mixer, a second low noise amplifier (LNA), a filtering circuit and an operational amplifier. The inventive module can be used for simultaneously transmitting data and audio signal, and the frequency response of the high frequency and low frequency component of the audio signal can be adjusted.