Directional coupler
    1.
    发明专利

    公开(公告)号:AU2004203279B2

    公开(公告)日:2006-04-06

    申请号:AU2004203279

    申请日:2004-07-20

    Applicant: CIT ALCATEL

    Inventor: PELZ DIETER

    Abstract: A directional coupler uses non-metallic slotted spacers (3) at the edges of a pair of coupled lines (S1, S2). The spacers are adjustable in their vertical position and thereby provide continuous coupling fine-adjustment. The spatial relationship between the coupled lines is therefore adjustable and does not depend upon extremely tight manufacturing tolerances.

    2.
    发明专利
    未知

    公开(公告)号:AT304739T

    公开(公告)日:2005-09-15

    申请号:AT03291939

    申请日:2003-07-31

    Applicant: CIT ALCATEL

    Inventor: PELZ DIETER

    Abstract: A directional coupler uses non-metallic slotted spacers (3) at the edges of a pair of coupled lines (S1, S2). The spacers are adjustable in their vertical position and thereby provide continuous coupling fine-adjustment. The spatial relationship between the coupled lines is therefore adjustable and does not depend upon extremely tight manufacturing tolerances.

    A MICROWAVE DIPLEXER ARRANGEMENT
    4.
    发明专利

    公开(公告)号:CA2270616C

    公开(公告)日:2002-02-12

    申请号:CA2270616

    申请日:1999-05-03

    Applicant: CIT ALCATEL

    Abstract: An adjustable microwave diplexer comprising two combline filter sections (A and B). Each filter section has at least three tunable resonator elements (1,2,3 and 4). Non-adjacent resonator elements of one section (A) are inductively coupl ed by an adjustable coupling element (20,21), and non-adjacent resonator elements of the other section (B) are capacitively coupled by an adjustable capacitor element (31). This arrangement provides the means to achieve adjustable transmission zeros above the passband of filter A and below the passband of filter B to provide the diplexer with two highly selective filters.

    A MICROWAVE DIPLEXER ARRANGEMENT
    5.
    发明专利

    公开(公告)号:CA2270616A1

    公开(公告)日:1999-11-14

    申请号:CA2270616

    申请日:1999-05-03

    Applicant: CIT ALCATEL

    Abstract: An adjustable microwave diplexer comprising two combline filter sections (A and B). Each filter section has at least three tunable resonator elements (1,2,3 and 4). Non-adjacent resonator elements of one section (A) are inductively coupled by an adjustable coupling element (20,21), and non-adjacent resonator elements of the other section (B) are capacitively coupled by an adjustable capacitor element (31). This arrangement provides the means to achieve adjustable transmission zeros above the passband of filter A and below the passband of filter B to provide the diplexer with two highly selective filters.

    Directional coupler
    8.
    发明专利

    公开(公告)号:AU2004203279A1

    公开(公告)日:2005-02-17

    申请号:AU2004203279

    申请日:2004-07-20

    Applicant: CIT ALCATEL

    Inventor: PELZ DIETER

    Abstract: A directional coupler uses non-metallic slotted spacers (3) at the edges of a pair of coupled lines (S1, S2). The spacers are adjustable in their vertical position and thereby provide continuous coupling fine-adjustment. The spatial relationship between the coupled lines is therefore adjustable and does not depend upon extremely tight manufacturing tolerances.

    DUAL BAND COMBINER ARRANGEMENT
    10.
    发明专利

    公开(公告)号:CA2273669A1

    公开(公告)日:2000-02-07

    申请号:CA2273669

    申请日:1999-06-07

    Applicant: CIT ALCATEL

    Abstract: A dual band combiner for combining two frequency bands having a 2:1 relationship, e.g. 900MHz and 1800MHz. The combiner comprises and upper frequency bandpass filter section and an upper frequency bandstop filter. The bandpass filter section comprises two open-end resonations whose lengths are 1/2 wavelength of the upper frequency band, and the bandstop filter comprises three open-end resonators whose lengths are 1/4 wavelength of the upper frequency band. Because of the 2:1 frequency relationship pronounced selectivity-enhancing transmission zeros are produced at the lower frequency band, thereby providing a combiner that has high isolation between ports while maintaining low insertion loss.

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