Compact balun

Details Compact balun Compact balun

2007-07-31

2007-07-31

Takaoka, Dean (Department: 2817)

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

C333S02400C

Reexamination Certificate

active

11080478

ABSTRACT:
A distributed backwards-wave balun comprising first and second pairs of coupled transmission line sections having one line section of the first coupled pair connected in series with one line section of the second coupled pair. A differential port is connected across the outer ends of the series-connected line sections and a single-ended port is connected to the inner end of the other line section of one of the coupled pairs. The balun includes an inductive load, connected in parallel with the differential port, in which the electrical length of the coupled line sections is less than one quarter of the wavelength of the centre frequency of the operating band of the balun.

REFERENCES:
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patent: 6292070 (2001-09-01), Merrill
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patent: 7034630 (2006-04-01), Rijks
patent: 1 100 193 (2001-05-01), None

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