Communications: directive radio wave systems and devices (e.g. – With particular circuit
Reexamination Certificate
2007-10-23
2007-10-23
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
C342S082000, C342S089000, C342S118000, C342S135000, C342S159000, C342S195000
Reexamination Certificate
active
10929363
ABSTRACT:
Provided is a millimeter-wave transmitting/receiving apparatus of pulse-modulation type in which pulse-modulated millimeter-wave signals for transmission are prevented from being outputted to a reception system due to inner reflection or other causes. Included are: an NRD guide (basic structure) formed of a dielectric line sandwiched between parallel plate conductors; a millimeter-wave signal oscillator; a pulse modulator; a circulator; a transmitting/receiving antenna; and a mixer. At the output end of the mixer is disposed a switching device which interrupts intermediate-frequency signals in an opened state, and, when a millimeter-wave signal for transmission from the pulse modulator enters a non-output state and the condition is stabilized, changes into a closed state to pass intermediate-frequency signals. The intermediate-frequency signal containing noise resulting from the millimeter-wave signal for transmission entering the mixer can be prevented from leaking toward downstream side of the mixer; wherefore a desired intermediate-frequency signal can be outputted.
REFERENCES:
patent: 2935743 (1960-05-01), Glegg
patent: 4292638 (1981-09-01), Lazarchik et al.
patent: 4698634 (1987-10-01), Alongi et al.
patent: 6664920 (2003-12-01), Mott et al.
patent: 2000-258525 (2000-09-01), None
patent: 2002-328161 (2002-11-01), None
patent: 2003-198421 (2003-07-01), None
Hayata Kazuki
Kishida Yuji
Oya Yoshiko
Sakamoto Yoshihiro
Gregory Bernarr E.
Hogan & Hartson LLP
Kyocera Corporation
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