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US 5,847,625 AGranted
Power Divider directional coupler
AssigneeTX RX Systems Inc.
InventorMarlin R. Gillette
Life of this patent
Estimating the term…
Abstract
A power divider directional coupler comprised of coupled transmission line sections at the beginning of each of a plurality of subdivided transmission lines wherein each subdivided transmission line has a unique characteristic impedance, even mode impedance and odd mode impedance. The coupled transmission line sections are shorted and function as quarter-wave transformers providing a center frequency electrical transmission phase of 90 degrees.
Claims10
A power divider, comprising:
- an input transmission line;
- a tee-connection including a first and a second transmission line terminating said input transmission line;
- a first output transmission line coupled to said first transmission line by a first shorting means for effecting a first quarter-wave length impedance coupling transformer;
- a second output transmission line coupled to said second transmission line by a second shorting means for effecting a second quarter-wave length impedance coupling transformer;
- a first resistance means coupling the unshorted ends of said first and second output transmission lines;
- a first input impedance matched output transmission line connected to said unshorted end of said first output transmission line;
- and
- a second input impedance matched output transmission line connected to said unshorted end of said second output transmission line.
5 more elements
A power divider, comprising:
- an input transmission line;
- a first quarter-wave length impedance coupling transformer comprised of first coupled transmission line sections driven by said input transmission line;
- a second quarter-wave length impedance coupling transformer comprised of second coupled transmission line sections driven by said input transmission line;
- a first input impedance matched output transmission line connected to said first quarter-wave length impedance coupling transformer;
- a second input impedance matched output transmission line connected to said second quarter-wave length impedance coupling transformer;
- and
- a resistance means coupling said first and second output transmission lines.
4 more elements
Dependencies are inferred from the claim text.