MY111401A - Diversity radio receiver automatic frequency control - Google Patents

Diversity radio receiver automatic frequency control

Info

Publication number
MY111401A
MY111401A MYPI93000508A MYPI19930508A MY111401A MY 111401 A MY111401 A MY 111401A MY PI93000508 A MYPI93000508 A MY PI93000508A MY PI19930508 A MYPI19930508 A MY PI19930508A MY 111401 A MY111401 A MY 111401A
Authority
MY
Malaysia
Prior art keywords
frequency control
automatic frequency
radio receiver
combined
signals
Prior art date
Application number
MYPI93000508A
Inventor
Peter L Wahlstrom
Tomas O Backstom
Anders B Sandell
Original Assignee
Ericsson Telefon Ab L M
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
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to MYPI93000508A priority Critical patent/MY111401A/en
Publication of MY111401A publication Critical patent/MY111401A/en

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Abstract

A RADIO-FREQUENCY RECEIVER EMPLOYING ANTENNA DIVERSITY IS PROVIDED WITH A PLURALITY OF ANTENNAS (11, 13) AND A LOCAL OSCILLATOR (33). INDIVIDUAL ERROR SIGNALS (PHERR1,PHERR2) ARE DERIVED FROM EACH OF RESPECTIVE ONES OF SIGNALS (S1 (T), S2(T)) RECEIVED FROM THE PLURALITY OF ANTENNAS (11, 13). THE ERROR SIGNALS ARE THEREAFTER COMBINED IN SUCH A WAY AS TO ARRIVE AT A COMBINED ERROR SIGNAL (PHERR TOT) HAVING GREATER RELIABILITY THAN ANY ONE OF THE INDIVIDUAL ERROR SIGNALS TAKEN ALONE. FINALLY, AN AUTOMATIC FREQUENCY CONTROL (31) CIRCUIT IS CONTROLLED USING THE COMBINED ERROR SIGNAL. SINCE THE EFFECT OF FADING ON THE INPUT SIGNAL TO THE AUTOMATIC FREQUENCY CONTROL IS REDUCED, PERFORMANCE OF THE AUTOMATIC FREQUENCY CONTROL CIRCUIT IS INCREASED AND THE QUALITY OF RADIO RECEPTION IS IMPROVED.(FIG. 1)
MYPI93000508A 1993-03-22 1993-03-22 Diversity radio receiver automatic frequency control MY111401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI93000508A MY111401A (en) 1993-03-22 1993-03-22 Diversity radio receiver automatic frequency control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI93000508A MY111401A (en) 1993-03-22 1993-03-22 Diversity radio receiver automatic frequency control

Publications (1)

Publication Number Publication Date
MY111401A true MY111401A (en) 2000-04-29

Family

ID=80001937

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI93000508A MY111401A (en) 1993-03-22 1993-03-22 Diversity radio receiver automatic frequency control

Country Status (1)

Country Link
MY (1) MY111401A (en)

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