Wave transmission lines and networks – Plural channel systems – Having branched circuits
Patent
1977-07-19
1979-03-20
Gensler, Paul L.
Wave transmission lines and networks
Plural channel systems
Having branched circuits
333251, H01P 120, H01P 512
Patent
active
041456734
ABSTRACT:
A series connection of n diplexers is used as a multiplexer for separating a hyperfrequency band into n + 1 sub-bands (or vice-versa). Each diplexer comprises a semi-circular inlet coupler followed by a semi-circular high-pass filter and by a semi-circular outlet coupler, the filter at each stage is dimensioned to reflect only the lowest of the sub-bands which it receives from the previous stage. The creation of unwanted parasitic modes in the reflected sub-band is avoided by so choosing the radius of the inlet coupler that the reflected sub-band lies between the frequencies at which the parasitic TE.sub.12 and TE.sub.22 modes occur. This is achieved by use of the relationship ##EQU1## WHERE V IS THE SPEED OF LIGHT, FMAX AND FMIN ARE THE UPPER AND LOWER LIMIT FREQUENCIES OF THE REFLECTED SUB-BAND AND P'.sub.12 and P'.sub.22 are the second zeros of the first and second order Bessel functions characterising the respective semi-circular TE.sub.12 and TE.sub.22 modes.
REFERENCES:
patent: 3050701 (1962-08-01), Tang
patent: 3771076 (1973-11-01), Kidner et al.
patent: 3787787 (1974-01-01), Shimada et al.
Gensler Paul L.
Plottel Roland
Societe Anonyme dite Compagnie Industrielle des Telecommunicatio
LandOfFree
Multiplexer for millimetric waves does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiplexer for millimetric waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiplexer for millimetric waves will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-223496