Double tuned input circuit for television transmitter amplifier

Details Double tuned input circuit for television transmitter amplifier Double tuned input circuit for television transmitter amplifier

1976-06-03

1978-01-24

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358184, 358186, 330 56, H04B 104, H04N 514, H04N 538, H03F 360

Patent

active

040706273

ABSTRACT:
A substantially constant impedance is developed across the input terminals of a linear amplifier used in a very high frequency (VHF) low band television transmitter. The input circuit consists of lumped components arranged in a capacitively coupled double tuned configuration. A relatively long coaxial transmission line system is used to connect the input circuit to the terminals of the tube. The coaxial line system and input circuit tunes across the entire VHF low band of 54 to 88 MHz. An input voltage standing wave ratio (VSWR) equal to or less than 1.2:1 is achieved over each six MHz channel.

REFERENCES:
patent: 2706802 (1955-04-01), Meisenhermer et al.
patent: 2710894 (1955-06-01), Gluyas, Jr.
patent: 3124764 (1964-03-01), Stearns
patent: 3842361 (1974-10-01), Quirk
patent: 3904995 (1975-09-01), Phillips

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