An aerial coupling device, suitable for coupling an aerial 11 of a mobile telephone 10 to the input of a measuring instrument, comprises a dielectric substrate 1 carrying at least one stripline 2 with a connector 9 at one end of the stripline and a terminating resistor 5 at the other end. In use a mobile telephone 10 is arranged such that its internal and/or external antenna is adjacent and parallel to a stripline. Plural parallel striplines may be arranged to extend from the connector 9 in phase opposition towards terminating resistors at opposite ends of a dielectric substrate. The striplines may have an impedance of between 50 and 377 ohms. An impedance transforming device and a 50 ohm coaxial cable may connect the striplines to the connector 9.
展开▼
