摘要:
An antenna apparatus includes: a circuit board that has a main surface and a rear surface opposite to each other; an antenna element that is formed of a metal plate and is arranged at a predetermined distance from the main surface of the circuit board; a plurality of legs that extend from the antenna element toward the circuit board; a ground conductor that is formed on the main surface or the rear surface of the circuit board; a feeding pin that supplies power from the circuit board to the antenna element; and a plurality of comb-shaped capacitor patterns that are formed on one of or both the main surface and the rear surface of the circuit board and are electrically connected between the plurality of legs and the ground conductor.
摘要:
An antenna apparatus includes: a circuit board that has a main surface and a rear surface opposite to each other; an antenna element that is formed of a metal plate and is arranged at a predetermined distance from the main surface of the circuit board; a plurality of legs that extend from the antenna element toward the circuit board; a ground conductor that is formed on the main surface or the rear surface of the circuit board; a feeding pin that supplies power from the circuit board to the antenna element; and a plurality of comb-shaped capacitor patterns that are formed on one of or both the main surface and the rear surface of the circuit board and are electrically connected between the plurality of legs and the ground conductor.
摘要:
An antenna unit according to the present invention comprises an antenna case composed of a top cover and a bottom plate that are joined together. An antenna module is disposed in the top cover. A packing member is disposed at a joining portion between the top cover and the bottom plate to thereby ensure sealing of the antenna module. The packing member has a plurality of anti-slip projecting portions, while the bottom plate has a plurality of through holes receiving the plurality of projecting portions so as to pass therethrough. A diameter of the through hole is made greater than that of the projecting portion to thereby provide a clearance between the through hole and the projecting portion.
摘要:
An antenna unit according to the present invention comprises an antenna case composed of a top cover and a bottom plate that are joined together. An antenna module is disposed in the top cover. A packing member is disposed at a joining portion between the top cover and the bottom plate to thereby ensure sealing of the antenna module. The packing member has a plurality of anti-slip projecting portions, while the bottom plate has a plurality of through holes receiving the plurality of projecting portions so as to pass therethrough. A diameter of the through hole is made greater than that of the projecting portion to thereby provide a clearance between the through hole and the projecting portion.
摘要:
Mounted on a back surface (21b) of a circuit board (21), a shield cover (24) has a substantially rectangular ceiling portion (241) with four corners which are chamfered, four side wall portions (242-245), and four corner portions (457). The shield cover (24) is mounted on the back surface (21b) of the circuit board by soldering at the four corner portions (247). There is no gap between the four side wall portions (242-245) and the four corner portions (247). The shield cover (24) is formed by bending working of a metal plate (40) and has extension portions (248) at both ends of the four corner portions (247) so as to interpose with the side wall portions (242-245).
摘要:
A GPS receiving antenna device that can suitably be provided on the exterior of a vehicle is provided with low cost. An antenna case includes a top cover and a bottom plate joined with each other. The top cover stores an antenna module that receives a signal and a packing member provided at the joining part between the top cover and the bottom plate to keep the antenna case tightly sealed. The top cover and the bottom plate are provided with engagement parts and claw parts, respectively, and the top cover and the bottom plate are joined with each other as the packing member is pressed.
摘要:
A GPS receiving antenna device that can suitably be provided on the exterior of a vehicle is provided with low cost. An antenna case includes a top cover and a bottom plate joined with each other. The top cover stores an antenna module that receives a signal and a packing member provided at the joining part between the top cover and the bottom plate to keep the antenna case tightly sealed. The top cover and the bottom plate are provided with engagement parts and claw parts, respectively, and the top cover and the bottom plate are joined with each other as the packing member is pressed.
摘要:
A GPS receiving antenna device that can suitably be provided on the exterior of a vehicle is provided with low cost. An antenna case includes a top cover and a bottom plate joined with each other. The top cover stores an antenna module that receives a signal and a packing member provided at the joining part between the top cover and the bottom plate to keep the antenna case tightly sealed. The top cover and the bottom plate are provided with engagement parts and claw parts, respectively, and the top cover and the bottom plate are joined with each other as the packing member is pressed.
摘要:
Mounted on a back surface (21b) of a circuit board (21), a shield cover (24) has a substantially rectangular ceiling portion (241) with four corners which are chamfered, four side wall portions (242-245), and four corner portions (457). The shield cover (24) is mounted on the back surface (21b) of the circuit board by soldering at the four corner portions (247). There is no gap between the four side wall portions (242-245) and the four corner portions (247). The shield cover (24) is formed by bending working of a metal plate (40) and has extension portions (248) at both ends of the four corner portions (247) so as to interpose with the side wall portions (242-245).
摘要:
A GPS receiving antenna device that can suitably be provided on the exterior of a vehicle is provided with low cost. An antenna case includes a top cover and a bottom plate joined with each other. The top cover stores an antenna module that receives a signal and a packing member provided at the joining part between the top cover and the bottom plate to keep the antenna case tightly sealed. The top cover and the bottom plate are provided with engagement parts and claw parts, respectively, and the top cover and the bottom plate are joined with each other as the packing member is pressed.