| 摘要 |
<p>An inexpensive and lightweight filter is made utilizing an electronic device's housing and the printed circuit board (15) upon which electrical components are mounted. The housing has a base, cover and sidewalls (20,21,22) and partitions (18,19) defining a compartment into which is received a portion of the printed circuit board (15). In this portion, finger-like projections (141-144) are formed to act as filter resonators. The compartment walls define a filter casing, thus forming a filter structure. <IMAGE></p> |
