Electronic switching apparatus having impedance matching circuit

Details Electronic switching apparatus having impedance matching circuit Electronic switching apparatus having impedance matching circuit

1987-12-18

1989-08-08

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307242, 307243, 455277, 328104, 328154, 330124R, 330295, 358181, H03K 1756, H03K 1752, H03F 368, H04N 5268

Patent

active

048556149

ABSTRACT:
A switching device is realized by means of two amplifier paths which are controllable by means of transistors. The collectors of output transistors (T1, T1B) are connected together, without an impedance matching circuit for each path, to a common point (10) being connected to an impedance matching circuit (L5, R7) which is common for the two paths. This switching device is particularly used for selecting signal paths between 1 and 2 GHz in systems for receiving television signals by satellite.

REFERENCES:
patent: 3345578 (1967-10-01), Shuda
patent: 3702898 (1972-11-01), Webb
patent: 3757139 (1973-09-01), Hunter
patent: 4223235 (1980-09-01), Rufray
patent: 4397041 (1983-08-01), Takeda et al.
patent: 4596045 (1986-06-01), Maier
patent: 4719374 (1988-01-01), Bialo

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