| 摘要 |
<p>A microwave coupler (10) is disclosed which includes an aluminum housing forming a cavity with upper and lower ground planes. A pair of substantially square-shaped conductors (22, 24) are supported within the cavity and symmetrically located with respect to the upper and lower ground planes. Each conductor (22, 24) has overlapping central portions (48, 48a) and second (50, 50a) and third (52, 52a) portions extending in opposite directions at a 90 degree angle from the central portion to form a substantially H-shaped configuration. A fourth portion (54, 54a) extends at a 90 degree angle from the third portion of each conductor (22, 24). The terminating portions of each conductor (22, 24) are provided with contacts (30-36) providing input/output ports (A, B, C, D). The contacts (30-36) are maintained in position by supports (26, 28, 37-40) attached to the walls of the cavity at the central portions (48, 48a) as well as at the terminating portions (30-36). To compensate for the inductance introduced by the conductor bends, the cavity is machined in the vicinity of the 90 degree bends to create an increase in capacitance to compensate for the inductance and thereby achieve a substantially 3 dB split between the input and output ports. <IMAGE></p> |
