Unequal stub length diplexing microwave frequency discriminator

Details Unequal stub length diplexing microwave frequency discriminator Unequal stub length diplexing microwave frequency discriminator

1991-01-18

1992-01-14

Grimm, Siegfried H.

Demodulators

Frequency modulation demodulator

Including microwave or distributed parameter structure

307519, 328141, 331 9, H03D 326

Patent

active

050814249

ABSTRACT:
A microwave frequency discriminator circuit useful as a frequency lineariion device includes a microstrip input conductor and a pair of microstrip output conductors, a pair of resistors, a pair of microstrip transmission line diplexer stubs of unequal lengths, a pair of detector diodes, and a quad of microstrip filter stubs. Each resistor at one end is connected to the same end of the input conductor and in parallel relation to one another. Each diplexer stub at one end is connected to an opposite end of one resistor and in parallel relation to one another. Each diplexer stub is open-circuited at an opposite end. Each detector diode at one end is connected to the one end of one stub and at an opposite end to one output conductor. The filter stubs are interposed in spaced pairs in one output conductor.

REFERENCES:
patent: 3676785 (1972-07-01), Pichal
patent: 4085377 (1978-04-01), Turski et al.
patent: 4281293 (1981-07-01), Childs et al.
patent: 4384367 (1983-05-01), King et al.
patent: 4636753 (1987-01-01), Geller et al.
patent: 4694260 (1987-09-01), Argintaru et al.

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