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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Electronic antenna switch. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Antennas. Measurements, setup and matching

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The disadvantage of the previously described electronic antenna switches is a significant attenuation in the receive mode, reaching 45-50% (especially in the 21 and 28 MHz bands). The switch, the scheme of which is shown in the figure, provides attenuation of no more than 10%.

Electronic Antenna Switch

In the manufacture of the switch, it is necessary to isolate the body of the output capacitor of the P-circuit (in the diagram - C4) from the chassis with a fluoroplastic or polystyrene gasket 5 mm thick.

The antenna is connected to the Gn1 socket, the receiver input is connected to the Gn2 socket.

Author: V. Davydov (UW9WR), Ufa; Publication: N. Bolshakov, rf.atnn.ru

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