| 摘要 |
<p>To provide a microwave finline configuration which has no equivalent in unilateral finline, two different finline circuits extend in a common length of waveguide (1, 2), suitably on opposite major surfaces of a common dielectric substrate (3). A pair of Doppler mixers may have identical finline circuit patterns formed by sheet conductors (4 and 5, 6 and 7) with identical mixer diodes (10, 11) connected across their respective fin transmission lines, the finline circuits differing in the longitudinal positions of the diodes (10, 11), which positions are such as to provide respective beat-frequency output signals, via low-pass filters (12, 13), in phase quadrature.</p> |
