Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1997-01-23
1998-07-07
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333 81A, 455 80, 455 83, H01P 115, H01P 512
Patent
active
057775303
ABSTRACT:
The switch attenuator of the invention includes: a first terminal connected to an antenna; a second terminal connected to a transmitter; and a third terminal connected to a receiver, thereby switching a first state and a second state. In the first state, the first terminal is connected to the second terminal, the first terminal is electrically isolated from the third terminal, the third terminal is connected to a ground and the switch attenuator is electrically controllable so as to vary an attenuation amount between the first terminal and the second terminal while maintaining such a relationship that an impedance Z1 viewed from the first terminal is substantially equal to an impedance Z2 viewed from the second terminal, and in the second state, the first terminal is connected to the third terminal, the first terminal is electrically isolated from the second terminal, the second terminal is connected to a ground and the switch attenuator is electrically controllable so as to vary an attenuation amount between the first terminal and the third terminal, while maintaining such a relationship that the impedance Z1 viewed from the first terminal is substantially equal to an impedance Z3 viewed from the third terminal.
REFERENCES:
patent: 3646484 (1972-02-01), Maxwell et al.
patent: 4656364 (1987-04-01), Yokogawa et al.
patent: 4843354 (1989-06-01), Fuller et al.
patent: 4959873 (1990-09-01), Flynn et al.
patent: 5327017 (1994-07-01), Fischer et al.
patent: 5339083 (1994-08-01), Inami
Gensler Paul
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Switch attenuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switch attenuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switch attenuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1210326