GB2436471B - Bi-directional vector modulator - Google Patents

Bi-directional vector modulator

Info

Publication number
GB2436471B
GB2436471B GB0708678A GB0708678A GB2436471B GB 2436471 B GB2436471 B GB 2436471B GB 0708678 A GB0708678 A GB 0708678A GB 0708678 A GB0708678 A GB 0708678A GB 2436471 B GB2436471 B GB 2436471B
Authority
GB
United Kingdom
Prior art keywords
vector modulator
directional vector
directional
modulator
vector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
GB0708678A
Other versions
GB2436471A (en
GB0708678D0 (en
Inventor
Joseph M Carey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fidelity Comtech Inc
Original Assignee
Fidelity Comtech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/441,945 external-priority patent/US6894657B2/en
Application filed by Fidelity Comtech Inc filed Critical Fidelity Comtech Inc
Priority to GB0708678A priority Critical patent/GB2436471B/en
Publication of GB0708678D0 publication Critical patent/GB0708678D0/en
Publication of GB2436471A publication Critical patent/GB2436471A/en
Application granted granted Critical
Publication of GB2436471B publication Critical patent/GB2436471B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
GB0708678A 2003-05-19 2004-05-19 Bi-directional vector modulator Expired - Lifetime GB2436471B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0708678A GB2436471B (en) 2003-05-19 2004-05-19 Bi-directional vector modulator

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/441,945 US6894657B2 (en) 2003-05-19 2003-05-19 Bi-directional vector modulator
GB0708678A GB2436471B (en) 2003-05-19 2004-05-19 Bi-directional vector modulator
GB0525775A GB2419051B (en) 2003-05-19 2004-05-19 Bi-Directional Vector Modulator

Publications (3)

Publication Number Publication Date
GB0708678D0 GB0708678D0 (en) 2007-06-13
GB2436471A GB2436471A (en) 2007-09-26
GB2436471B true GB2436471B (en) 2008-02-13

Family

ID=38477344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0708678A Expired - Lifetime GB2436471B (en) 2003-05-19 2004-05-19 Bi-directional vector modulator

Country Status (1)

Country Link
GB (1) GB2436471B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9276314B2 (en) * 2012-10-15 2016-03-01 Electronics And Telecommunications Research Institute Central node apparatus and method for transmitting wireless signals between central office node and remote node using beam patterns and antenna polarization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040174840A1 (en) * 2003-03-03 2004-09-09 Takashi Yano Data transmission method for a mobile communication system
US20050130606A1 (en) * 2003-12-02 2005-06-16 Wang James J. System and method for providing a smart antenna
WO2006027728A2 (en) * 2004-09-10 2006-03-16 Koninklijke Philips Electronics N.V. Wireless communication apparatus with multi-antenna and method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040174840A1 (en) * 2003-03-03 2004-09-09 Takashi Yano Data transmission method for a mobile communication system
US20050130606A1 (en) * 2003-12-02 2005-06-16 Wang James J. System and method for providing a smart antenna
WO2006027728A2 (en) * 2004-09-10 2006-03-16 Koninklijke Philips Electronics N.V. Wireless communication apparatus with multi-antenna and method thereof

Also Published As

Publication number Publication date
GB2436471A (en) 2007-09-26
GB0708678D0 (en) 2007-06-13

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Expiry date: 20240518