Abstract A multi-channel radio relay system in which a plurality of high-frequency channels are provided in a link between a transmitting station and a receiving station, said channels being combined to form a high-frequency group, and separated at the receiving end, utilizing therefor, at each station, a cascade circuit of channel branch elements, which comprise circulators and band-pass filters, in which one of the two edge channels located at the respective upper and lower edges of the frequency band to be transmitted, at the transmitting end, is assigned to the channel branch element furthest from the antenna terminal thereat, and the other of such two edge channels, at the receiving end, is assigned to the channel branch element furthest from the antenna terminal thereat, with the band-pass filters of the respective channel elements for the two edge channels being detuned, with respect to their middle frequencies, relative to the middle frequency of their assigned edge channels, by an amount Δ f, in the direction of the middle frequency of the respective channel adjacent in frequency position.
Inventors
👤 Hans-Werner Weber
👤 Hermann Vollhardt
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-05 18:20
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
215 words
A multi-channel radio relay system in which a plurality of high-frequency channels are provided in a link between a transmitting and a receiving station, said channels being combined at the transmitting station to form a common high-frequency group over a cascade circuit comprising channel branch elements, each of which contains a circulator and a band-pass filter, and separated at the receiving station over a similar cascade circuit, the allocation of frequencies being such that each channel passes over an equal number of circulators in said link, the edge channel of highest frequency being allotted to the circulator, of one of said cascades, most remote from the antenna associated therewith, and with the circulator, of the other cascade, closest to the antenna associated therewith, the edge channel of lowest frequency being allocated to the circulator of each cascade at the opposite end to that allotted to the highest frequency, all of said circulators being similarly arranged in their respective cascades, the band-pass filter of each cascade connected to the circulator most remote from the associated antenna being detuned by an amount Δf, from its middle channel frequency in the direction of the middle frequency of the channel adjacent in frequency position, and the remaining band-pass filters being tuned to the middle frequency of the channel involved.
Claim 2
Dependent Claim
215 words
A multi-channel radio relay system in which a plurality of high-frequency channels are provided in a link between a transmitting and a receiving station, said channels being combined at the transmitting station to form a common high-frequency group over a cascade circuit comprising channel branch elements, each of which contains a circulator and a band-pass filter, and separated at the receiving station over a similar cascade circuit, the allocation of frequencies being such that each channel passes over an equal number of circulators in said link, the edge channel of highest frequency being allotted to the circulator, of one of said cascades, most remote from the antenna associated therewith, and with the circulator, of the other cascade, closest to the antenna associated therewith, the edge channel of lowest frequency being allocated to the circulator of each cascade at the opposite end to that allotted to the highest frequency, all of said circulators being similarly arranged in their respective cascades, the band-pass filter of each cascade connected to the circulator most remote from the associated antenna being detuned by an amount Δf, from its middle channel frequency in the direction of the middle frequency of the channel adjacent in frequency position, and the remaining band-pass filters being tuned to the middle frequency of the channel involved.
Claim 3
Dependent Claim
24 words
A system according to claim 1, wherein the amount Δf of the detuning is less than the band width employed in such edge channel.