GB1445665A - Vswr alarm system - Google Patents
Vswr alarm systemInfo
- Publication number
- GB1445665A GB1445665A GB4462774A GB4462774A GB1445665A GB 1445665 A GB1445665 A GB 1445665A GB 4462774 A GB4462774 A GB 4462774A GB 4462774 A GB4462774 A GB 4462774A GB 1445665 A GB1445665 A GB 1445665A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm system
- vswr alarm
- vswr
- alarm
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/04—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant in circuits having distributed constants, e.g. having very long conductors or involving high frequencies
- G01R27/06—Measuring reflection coefficients; Measuring standing-wave ratio
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmitters (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US406711A US3870957A (en) | 1973-10-15 | 1973-10-15 | VSWR alarm system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1445665A true GB1445665A (en) | 1976-08-11 |
Family
ID=23609147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4462774A Expired GB1445665A (en) | 1973-10-15 | 1974-10-15 | Vswr alarm system |
Country Status (2)
Country | Link |
---|---|
US (1) | US3870957A (en) |
GB (1) | GB1445665A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4038160A1 (en) * | 1990-11-30 | 1992-07-30 | Telefunken Sendertechnik | Detecting mismatch on feed line between radio transmitter and aerial - using directional couplers and generating AC voltage corresp. to waves propagated in both directions |
GB2346292B (en) * | 1999-01-30 | 2003-06-11 | Motorola Ltd | Voltage standing-wave ratio measurement apparatus and use in a cellular communications system |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4019150A (en) * | 1975-11-17 | 1977-04-19 | Motorola, Inc. | PA protection circuit for a single sideband radio |
US4041395A (en) * | 1976-08-02 | 1977-08-09 | Integral Engineering & Manufacturing Corporation | Transmitter performance monitor and antenna matching system |
CH615785A5 (en) * | 1977-05-04 | 1980-02-15 | Bbc Brown Boveri & Cie | |
US4137556A (en) * | 1977-09-02 | 1979-01-30 | Alpex Computer Corporation | Protection circuit for a data transmission system |
US4274156A (en) * | 1978-01-18 | 1981-06-16 | Bird Electronic Corporation | Monitor for RF transmitter |
US4249258A (en) * | 1979-11-21 | 1981-02-03 | Georgia Tech Research Institute | Self-calibrating voltage standing-wave ratio meter system |
JPS5694848A (en) * | 1979-12-28 | 1981-07-31 | Nec Corp | Control system of transmitter |
US4353037A (en) * | 1980-08-11 | 1982-10-05 | Motorola, Inc. | Amplifier protection circuit |
US4447783A (en) * | 1982-05-19 | 1984-05-08 | The Perkin-Elmer Corp. | Programmable RF power regulator (stabilizer) |
JPS60171414A (en) * | 1984-02-13 | 1985-09-04 | プリンストン・アプライド・リサ−チ・コ−ポレイシヨン | Lock-in amplifier |
US4621242A (en) * | 1984-03-19 | 1986-11-04 | The Perkin-Elmer Corporation | R.F. impedance match control system |
US4593409A (en) * | 1984-04-04 | 1986-06-03 | Motorola, Inc. | Transceiver protection arrangement |
US4704573A (en) * | 1985-11-22 | 1987-11-03 | Motorola, Inc. | Impedance mismatch detector |
CA1261002A (en) * | 1985-11-22 | 1989-09-26 | Harvey N. Turner, Jr. | Impedance mismatch detector |
US4799063A (en) * | 1987-09-14 | 1989-01-17 | Grumman Aerospace Corporation | Method and apparatus for isolating faults in an antenna system |
US4967159A (en) * | 1989-02-23 | 1990-10-30 | Abbott Laboratories | Self-balancing reflectometer |
US5090847A (en) * | 1989-05-04 | 1992-02-25 | U.S. Tech Corporation | Pressure foot for microwave drill detection system |
US4988943A (en) * | 1989-08-25 | 1991-01-29 | Motorola, Inc. | VSWR meter arrangement with a display output having a linear scale |
FI92766C (en) * | 1993-04-14 | 1994-12-27 | Nokia Telecommunications Oy | Method and apparatus for checking the condition of an antenna |
US5689267A (en) * | 1995-11-22 | 1997-11-18 | Allied Signal Inc | Automatic VSWR sensing for aircraft-mounted pulse radar systems |
US6557564B1 (en) * | 1999-10-30 | 2003-05-06 | Applied Materials, Inc. | Method and apparatus for cleaning a thin disk |
US6417732B1 (en) * | 2001-04-06 | 2002-07-09 | Eni Technology, Inc. | Controller for RF power generator with reduced cable length sensitivity |
US20060035600A1 (en) * | 2004-07-28 | 2006-02-16 | Samsung Electronics Co., Ltd. | RF front-end apparatus in a TDD wireless communication system |
US9148796B2 (en) | 2012-12-13 | 2015-09-29 | Ninve Jr. Inc. | Resilient antenna disturbance detector |
CN112154604B (en) | 2018-05-23 | 2024-07-30 | 华为技术有限公司 | Antenna controller for antenna with linear power amplifier |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020529A (en) * | 1959-12-21 | 1962-02-06 | Collins Radio Co | Reflected power alarm for a variable power output antenna system |
NL295488A (en) * | 1962-07-19 | |||
US3508115A (en) * | 1966-08-22 | 1970-04-21 | Ex Cell O Corp | Circuit for and method of current responsive electronic control |
US3417293A (en) * | 1966-10-28 | 1968-12-17 | Gen Electric | Reverse current indicating circuit |
JPS5551223B1 (en) * | 1969-09-20 | 1980-12-23 | ||
US3794941A (en) * | 1972-05-08 | 1974-02-26 | Hughes Aircraft Co | Automatic antenna impedance tuner including digital control circuits |
-
1973
- 1973-10-15 US US406711A patent/US3870957A/en not_active Expired - Lifetime
-
1974
- 1974-10-15 GB GB4462774A patent/GB1445665A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4038160A1 (en) * | 1990-11-30 | 1992-07-30 | Telefunken Sendertechnik | Detecting mismatch on feed line between radio transmitter and aerial - using directional couplers and generating AC voltage corresp. to waves propagated in both directions |
GB2346292B (en) * | 1999-01-30 | 2003-06-11 | Motorola Ltd | Voltage standing-wave ratio measurement apparatus and use in a cellular communications system |
Also Published As
Publication number | Publication date |
---|---|
US3870957A (en) | 1975-03-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1445665A (en) | Vswr alarm system | |
AU6598074A (en) | Construction system | |
AU6500774A (en) | Security system | |
ZA747727B (en) | Handbag alarm system | |
AU6963474A (en) | Antenna | |
AU6976974A (en) | Detection system | |
ZA742061B (en) | Alarm apparatus | |
AU7425574A (en) | Warning system | |
JPS57159186A (en) | Telecvision receiving system | |
CS187413B2 (en) | Aerial system | |
AU6395373A (en) | Securing system | |
IL44560A0 (en) | Antenna system | |
AU6896974A (en) | Alarm systems | |
AU7261874A (en) | Telemetering system | |
AU6649874A (en) | Alarm system | |
AU474711B2 (en) | Chopper-control system | |
ZA744657B (en) | Multiple-frequency signalling system | |
IL44532A0 (en) | Alarm installation | |
AU7132674A (en) | Electrical systems | |
AU7083274A (en) | Starting systems | |
GB1438606A (en) | Signal transformation system | |
AU476856B2 (en) | Alarm system | |
ZA731793B (en) | Alarm system | |
IL41442A0 (en) | Alarm system | |
CA1002149A (en) | Indicating system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |