Millimeter-wave-band radio communication method in which both a modulated signal and an unmodulated carrier are transmitted to a system with a receiver having plural receiving circuits

A millimeter-wave band radio communication method in which a receiver receives both an RF-band modulated signal and an un-modulated carrier transmitted from a transmitter, the un-modulated carrier having a phase noise characteristic coherent with that of the RF-band modulated signal, and generates a product of received signals to thereby restore an IF-band transmission source signal, the method comprising:

• disposing a plurality of receiving circuits, each formed as a single constituent element by combining a planar printed small receiving antenna and a micro planar receiving circuit, at intervals smaller than a wavelength corresponding to an IF band;
• mixing signals detected at individual ones of the receiving circuits to output an IF-band composite output, which is then demodulated;
• and
• providing two or more substrates each carrying at least one receiving circuit, and changing intervals between the substrates manually or automatically in accordance with power of the IF-band composite output.

A millimeter-wave band radio communication system in which a receiver receives both an RF-band modulated signal and an un-modulated carrier transmitted from a transmitter, the un-modulated carrier having a phase noise characteristic coherent with that of the RF-band modulated signal, and generates a product of received signals to thereby restore an IF-band transmission source signal, the system comprising:

• a plurality of receiving circuits each formed as a single constituent element by combining a planar printed small receiving antenna and a micro planar receiving circuit, and disposed at intervals smaller than a wavelength corresponding to an IF band;
• a detection output composing section that mixes signals detected at individual ones of the receiving circuits to output an IF-band composite output;
• an IF signal demodulation section that receives the IF-band composite output from the detection output composing section, and demodulates the IF-band composite output;
• and
• a variable phase shifter and a variable attenuator that perform phase adjustment and amplitude weighting, respectively, for each signal respectively detected by a receiving circuit before the detection output composing section mixes the signals.

A millimeter-wave band radio communication system in which a receiver receives both an RF-band modulated signal and an un-modulated carrier transmitted from a transmitter, the un-modulated carrier having a phase noise characteristic coherent with that of the RF-band modulated signal, and generates a product of received signals to thereby restore an IF-band transmission source signal, the system comprising:

• a plurality of receiving circuits each formed as a single constituent element by combining a planar printed small receiving antenna and a micro planar receiving circuit, and disposed at intervals smaller than a wavelength corresponding to an IF band;
• a detection output composing section that mixes signals detected at individual ones of the receiving circuits to output an IF-band composite output;
• and
• an IF signal demodulation section that receives the IF-band composite output from the detection output composing section, and demodulates the IF-band composite output, wherein
• three or more of the receiving circuits are provided and disposed at irregular intervals which differ from one another.

A millimeter-wave band radio communication system in which a receiver receives both an RF-band modulated signal transmitted and an un-modulated carrier transmitted from a transmitter, the un-modulated carrier having a phase noise characteristic coherent with that of the RF-band modulated signal, and generates a product of received signals to thereby restore an IF-band transmission source signal, the system comprising:

• a plurality of receiving circuits each formed as a single constituent element by combining a planar printed small receiving antenna and a micro planar receiving circuit, and disposed at intervals smaller than a wavelength corresponding to an IF band;
• a detection output composing section that mixes signals detected at individual ones of the receiving circuits to output an IF-band composite output;
• and
• an IF signal demodulation section that receives the IF-band composite output from the detection output composing section, and demodulates the IF-band composite output, wherein
• two or more substrates each carrying at least one receiving circuit are provided, and intervals between the substrates are changed manually or automatically in accordance with power of the IF-band composite output.

A millimeter-wave band radio communication system in which a receiver receives both an RF-band modulated signal and an un-modulated carrier transmitted from a transmitter, the un-modulated carrier having a phase noise characteristic coherent with that of the RF-band modulated signal, and generates a product of received signals to thereby restore an IF-band transmission source signal, the system comprising:

• a plurality of receiving circuits each formed as a single constituent element by combining a planar printed small receiving antenna and a micro planar receiving circuit, and disposed at intervals smaller than a wavelength corresponding to an IF band;
• a detection output composing section that mixes signals detected by individual ones of the receiving circuits to output an IF-band composite output;
• and
• an IF signal demodulation section that receives the IF-band composite output from the detection output composing section, and demodulates the IF-band composite output, wherein
• the receiving circuits are arranged two-dimensionally along longitudinal and transverse directions or three-dimensionally.