JPS6223932B2 - - Google Patents
Info
- Publication number
- JPS6223932B2 JPS6223932B2 JP2627480A JP2627480A JPS6223932B2 JP S6223932 B2 JPS6223932 B2 JP S6223932B2 JP 2627480 A JP2627480 A JP 2627480A JP 2627480 A JP2627480 A JP 2627480A JP S6223932 B2 JPS6223932 B2 JP S6223932B2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- circuit
- noise
- multipath
- output
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 18
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/24—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/344—Muting responsive to the amount of noise (noise squelch)
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
-
- 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
- H04B7/0802—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 antenna selection
- H04B7/0805—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 antenna selection with single receiver and antenna switching
- H04B7/0814—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 antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2627480A JPS56122528A (en) | 1980-03-03 | 1980-03-03 | Antenna receiving system |
GB8106612A GB2071465B (en) | 1980-03-03 | 1981-03-03 | Fm receiver for use with motor cars |
DE3107970A DE3107970C2 (de) | 1980-03-03 | 1981-03-03 | FM-Empfänger mit wenigstens zwei Antennen |
US06/241,460 US4370522A (en) | 1980-03-03 | 1981-03-03 | FM Receiver for use with motorcars |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2627480A JPS56122528A (en) | 1980-03-03 | 1980-03-03 | Antenna receiving system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56122528A JPS56122528A (en) | 1981-09-26 |
JPS6223932B2 true JPS6223932B2 (US07816562-20101019-C00012.png) | 1987-05-26 |
Family
ID=12188698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2627480A Granted JPS56122528A (en) | 1980-03-03 | 1980-03-03 | Antenna receiving system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56122528A (US07816562-20101019-C00012.png) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01163638U (US07816562-20101019-C00012.png) * | 1988-05-06 | 1989-11-15 | ||
JPH02123542U (US07816562-20101019-C00012.png) * | 1989-03-23 | 1990-10-11 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5933355U (ja) * | 1982-08-25 | 1984-03-01 | トヨタ自動車株式会社 | 車両用fmラジオ |
-
1980
- 1980-03-03 JP JP2627480A patent/JPS56122528A/ja active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01163638U (US07816562-20101019-C00012.png) * | 1988-05-06 | 1989-11-15 | ||
JPH02123542U (US07816562-20101019-C00012.png) * | 1989-03-23 | 1990-10-11 |
Also Published As
Publication number | Publication date |
---|---|
JPS56122528A (en) | 1981-09-26 |