| 摘要 |
<p>A waveguide (30, 38, 37, 37A, 42, 54, 60, 62) for microwave radar level gages (14) includes a process sealed barrier (54) in the waveguide bore (37) that is impedance matched with bore transition sections (38, 60, 63) of the waveguide at opposite ends thereof. The impedance matching results in positioning of tapered ends (60, 62) of the barrier (54) offset from the ends of the bore transition sections (38, 42).</p> |
