| 摘要 |
A radar speedmeter for diverse applications including ABS braking, vehicle speed metering and anti-skid control for aircraft wheels, in the form of a microwave transmitter-receiver device comprising: a length of transmission line (6a') whose ends each terminate in an antenna (7); and characterised by two receiver mixer points along the line which are located equidistant from a point (8') in the line at which transmitter power is admitted to the line. |
