Abstract: A self-configurable resonance antenna includes a main antenna for transmitting and receiving radio waves of a plurality of mutually different frequency bands, a coupling element having at least two radiating patches with different effective electrical lengths for configuring the impedance of the self-configurable resonance antenna, and a matching circuit disposed between the main antenna and the coupling element. The matching circuit has a filter, a RF detector, a switching logic and a RF switch, the RF switch switching between at least the two radiating patches with different effective electrical lengths for adjusting the main antenna operating in different frequency bands.

Abstract: A circuit module for a silicon condenser microphone of the present disclosure includes a transducer, a charge pump, an isolator, a first amplifier, a second amplifier, a reaction circuit, a first bias circuit, and a second bias circuit. The charge pump electrically connects to an input port of the transducer, and an output port of the transducer electrically connects to an input port of the first amplifier via the isolator. An output port of the first amplifier electrically connects to an input port of the second amplifier. The reaction circuit is arranged between the output port of the first amplifier and the input port of the transducer. The isolator isolates the direct-current components of the first electrical signal, and therefore, the oscillations of the direct-current components will not affect the performance of the first amplifier.

Abstract: A circuit module for a silicon condenser microphone of the present disclosure includes a transducer, a charge pump, an isolator, a first amplifier, a second amplifier, a reaction circuit, a first bias circuit, and a second bias circuit. The charge pump electrically connects to an input port of the transducer, and an output port of the transducer electrically connects to an input port of the first amplifier via the isolator. An output port of the first amplifier electrically connects to an input port of the second amplifier. The reaction circuit is arranged between the output port of the first amplifier and the input port of the transducer. The isolator isolates the direct-current components of the first electrical signal, and therefore, the oscillations of the direct-current components will not affect the performance of the first amplifier.

Abstract: An antenna is disclosed. The antenna includes a substrate and an antenna layer disposed on a top surface of the substrate. The antenna layer includes a patch and a feed line electrically connected to the patch. The patch includes a number of slots disposed at a center portion thereof for forming a gridding part and an edge part surrounding the gridding part. A ratio of the width of the edge part and the width of the patch is at least 0.32.

Abstract: A self-configurable resonance antenna includes a main antenna for transmitting and receiving radio waves of a plurality of mutually different frequency bands, a coupling element having at least two radiating patches with different effective electrical lengths for configuring the impedance of the self-configurable resonance antenna, and a matching circuit disposed between the main antenna and the coupling element. The matching circuit has a filter, a RF detector, a switching logic and a RF switch, the RF switch switching between at least the two radiating patches with different effective electrical lengths for adjusting the main antenna operating in different frequency bands.

Abstract: An antenna is disclosed. The antenna includes a substrate and an antenna layer disposed on a top surface of the substrate. The antenna layer includes a patch and a feed line electrically connected to the patch. The patch includes a number of slots disposed at a center portion thereof for forming a gridding part and an edge part surrounding the gridding part. A ratio of the width of the edge part and the width of the patch is at least 0.32.

Abstract: An antenna assembly includes a loop-shaped coil and a holder. The holder has a first plate, a second plate, and a core disposed between the first plate and the second plate. The loop-shaped coil includes a main coil entwined around the surface of the core of the holder. The main coil includes a hollow space corresponding to the configuration of the core.

Abstract: A radio communications assembly (200) and an antenna radiator assembly (201). The antenna radiator assembly (201) forms part of the radio communications assembly (200) and is housed in a housing (202, 203). The antenna radiator assembly (201) has a circuit board (210) supporting electrical conductors (225) one of which is coupled to a feed point (130). There is also a ground plane (140) and an antenna radiator element (107) is coupled to the feed point (130). The antenna radiator element (107) is spaced from the ground plane (140) and a tertiary antenna radiator arm (155) spaced from the antenna radiator element (107). There is also a first band stop filter (150) disposed in a space (212) between the tertiary antenna radiator arm (155) and the antenna radiator element (107). The first band stop filter (150) provides electrical coupling of the antenna radiator element (1070 to the tertiary antenna radiator arm (155) at its band pass frequencies.