Patent US3899747A successfully refreshed from Google Patents.
US3899747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for providing radio equipment with a plurality of oscillators
Assignee: Ericsson Inc
•
Filing: 1973-09-26
•
Granted: 1975-08-12
•
Expires: 1993-09-26
Abstract
Abstract Radio equipment, such as a mobile transmitter and receiver, may require or use a fairly large number of frequencies, some of which may have a relatively low frequency stability and some of which must have a relatively high frequency stability. An oscillator module is provided for each frequency needed by the equipment. Each oscillator module has an oscillator that is substantially similar to the other oscillators and that has a temperature compensator input. And each oscillator module has a temperature compensator receptacle. Each of the high stability oscillator modules which must provide the high frequency stability is provided with a temperature compensator in its receptacle. The compensator output is connected to its respective oscillator compensator input, and the compensator is adjusted so that its oscillator has the relatively high frequency stability. One of the other oscillator modules which may provide a relatively low frequency stability is provided with a compensator in its receptacle, and this module is designated the master oscillator module. The compensator output of the master oscillator module is connected to its own oscillator compensator input and to all oscillator compensator inputs in the other modules which may provide the low frequency stability. These other modules are designated slave oscillator modules. Thus, a single oscillator module can be provided, an individual compensator provided in each high stability module, and one compensator provided in a master oscillator module for all of the low frequency stability modules.
Inventors
- 👤 Olin S Giles
- 👤 Edwin C Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:38
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02; H03L1/022; H03L1/023; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/366; H03B5/368; H03B2200/00; H03B2200/0002; H03B2200/0008; H03B2200/003; H03B2200/004; H03B5/362; H03B5/364
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
An improved arrangement for providing radio apparatus with a plurality of oscillators, some of which have a high frequency stability and some of which have a low frequency stability, said improved arrangement comprising: a. a plurality of substantially similar oscillator modules each having an oscillator circuit substantially similar to the other oscillator circuits, a compensator input for said osCillator circuit, and a compensator receptacle; b. a first compensator positioned in a first of said modules; c. means connecting the output of said first compensator to only the compensator input of the oscillator in said first module for providing said oscillator of said first module with said high frequency stability; d. a second compensator positioned in a second of said modules; e. and means connecting the output of said second compensator in parallel with the compensator input of the oscillator in said second module and to the compensator input of the oscillator in at least a third module for providing said oscillators of said second and third modules with said low frequency stability.
Claim 2
Dependent Claim
172 words
An improved arrangement for providing radio apparatus with a plurality of oscillators, some of which have a high frequency stability and some of which have a low frequency stability, said improved arrangement comprising: a. a plurality of substantially similar oscillator modules each having an oscillator circuit substantially similar to the other oscillator circuits, a compensator input for said osCillator circuit, and a compensator receptacle; b. a first compensator positioned in a first of said modules; c. means connecting the output of said first compensator to only the compensator input of the oscillator in said first module for providing said oscillator of said first module with said high frequency stability; d. a second compensator positioned in a second of said modules; e. and means connecting the output of said second compensator in parallel with the compensator input of the oscillator in said second module and to the compensator input of the oscillator in at least a third module for providing said oscillators of said second and third modules with said low frequency stability.
Claim 3
Dependent Claim
48 words
The improved arrangement of claim 1, and further comprising means connecting the output of said second compensator in parallel with the compensator inputs of a plurality of other oscillators in others of said modules for providing said other oscillators of said other modules with said low frequency stability.
Claim 4
Dependent Claim
54 words
The improved arrangement of claim 1, and further comprising a fourth compensator positioned in a fourth of said modules, and means connecting the output of said fourth compensator to only the compensator input of the oscillator in said fourth module for providing said fourth oscillator of said fourth module with said high frequency stability.
Claim 5
Dependent Claim
48 words
The improved arrangement of claim 3, and further comprising means connecting the output of said second compensator in parallel with the compensator inputs of a plurality of other oscillators in others of said modules for providing said other oscillators of said other modules with said low frequency stability.
Claim 6
Dependent Claim
174 words
A improved circuit for radio apparatus utilizing a plurality of substantially similar oscillator modules comprising first group of oscillators having high frequency stability characteristics and a second group of oscillators having low frequency stability characteristics, and wherein a. each of said oscillator modules including an oscillator, a compensator input to said oscillator and a receptacle for receiving a compensator, each said receptacle further including means for providing an output from a compensator inserted in said receptacle to said oscillator. b. said first group of said plurality of oscillator modules, each including a high frequency stability compensator in the receptacle of said respective modules, and c. said second group of said plurality of oscillator modules including a master oscillator module and a plurality of slave oscillator modules, a low frequency stability compensator in the receptacle of said master module, and means interconnecting the output from said low frequency stability compensator in the receptacle of said master module in parallel with the compensation input of each slave oscillator module of said second group of oscillator modules.
Claim 7
Dependent Claim
174 words
A improved circuit for radio apparatus utilizing a plurality of substantially similar oscillator modules comprising first group of oscillators having high frequency stability characteristics and a second group of oscillators having low frequency stability characteristics, and wherein a. each of said oscillator modules including an oscillator, a compensator input to said oscillator and a receptacle for receiving a compensator, each said receptacle further including means for providing an output from a compensator inserted in said receptacle to said oscillator. b. said first group of said plurality of oscillator modules, each including a high frequency stability compensator in the receptacle of said respective modules, and c. said second group of said plurality of oscillator modules including a master oscillator module and a plurality of slave oscillator modules, a low frequency stability compensator in the receptacle of said master module, and means interconnecting the output from said low frequency stability compensator in the receptacle of said master module in parallel with the compensation input of each slave oscillator module of said second group of oscillator modules.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |