Active balun

Details Active balun Active balun

1989-05-22

1991-02-19

Mullins, James B.

Amplifiers

With distributed parameter-type coupling means

Distributed amplifier

328 16, 328 19, 330 55, 330147, 330275, 330277, 330301, 333 25, 455325, 455332, 455333, H03F 360, H03B 1900, H03H 500

Patent

active

049947559

ABSTRACT:
A double balun circuit is provided by connecting two pairs of circut types. The first circuit, a distributed divider circuit, includes first and second pluralities of field effect transistors, a common input transmission line, and a first and second output transmission lines. The common input transmission line is disposed to successively couple the input electrodes of each transistor of both the first and second pluralities of transistors. The output lines are disposed to successively couple the output electrodes of the respective ones of the plurities of transistors. Each output transmission line is coupled to one of the pair of output terminals of the circuit. A pair of inverter circuits comprised of an input transmission line, a plurality of field effect transistors, and an output transmission line having input and output electrodes successively coupled by respective input and output transmission line networks are coupled between the output electrodes of each one of a pair of divider circuits, such that an input electrode at the input side of the inverter circuit is coupled to one of the outputs of the divider circuit, whereas an input terminal coupled to the output side of the inverter is coupled to the output of the second one of the divider circuits. This particular arrangement provides an active double balun which may be used in a double baluns mixer.

REFERENCES:
patent: 4675911 (1987-06-01), Sokolov et al.
patent: 4797628 (1989-01-01), Gruchalla et al.
Anthony M. Pavio et al., "Broadband Monolithic Single and Double Ring Active/Passive Mixers", IEEE 1988 Microwave and Millimeter-Wave Monolithic Circuits Symposium, (1988), pp. 71-74.
Jutzi, W., "Microwave Bandwidth Active Transversal Filter Concept with MESFETS", IEEE Transactions on Microwave Theory and Techniques, vol. MIT-19, No. 9, (Sep. 1971), pp. 760-767.

Affiliated with

Also associated with

Rating

Active balun does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active balun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active balun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1146346