CA2499328A1 - Digital wireless narrow band radio - Google Patents
Digital wireless narrow band radio Download PDFInfo
- Publication number
- CA2499328A1 CA2499328A1 CA 2499328 CA2499328A CA2499328A1 CA 2499328 A1 CA2499328 A1 CA 2499328A1 CA 2499328 CA2499328 CA 2499328 CA 2499328 A CA2499328 A CA 2499328A CA 2499328 A1 CA2499328 A1 CA 2499328A1
- Authority
- CA
- Canada
- Prior art keywords
- pcb
- network communication
- communication card
- carrier signal
- digital interface
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
A network communication card is provided for facilitating ultra high frequency (UHF) radio communication between a terminal and a base station, the network communication card being in communication with an antenna and comprising a double-sided multilayer printed circuit board (PCB). The PCB comprises a digital interface, a receiver and a transmitter.
The digital interface provides communication between the PCB and the terminal. The receiver receives incoming radio signals from the base station and processes the received signals for communication to the terminal via the digital interface. The transmitter transmits outgoing radio signals from the terminal via the digital interface to the base station and includes the following components. A
digital synthesizer provides a highly accurate modulated carrier signal. An upconversion circuit increases the frequency of the carrier signal. A filter filters spurious content from the carrier signal. A phase locked loop (PLL) comprising a synthesizer and a voltage controlled oscillator (VCO) generates a transmission signal from the filtered carrier signal. A
transmission circuit transmits the transmission signal via the antenna.
The digital interface provides communication between the PCB and the terminal. The receiver receives incoming radio signals from the base station and processes the received signals for communication to the terminal via the digital interface. The transmitter transmits outgoing radio signals from the terminal via the digital interface to the base station and includes the following components. A
digital synthesizer provides a highly accurate modulated carrier signal. An upconversion circuit increases the frequency of the carrier signal. A filter filters spurious content from the carrier signal. A phase locked loop (PLL) comprising a synthesizer and a voltage controlled oscillator (VCO) generates a transmission signal from the filtered carrier signal. A
transmission circuit transmits the transmission signal via the antenna.
Claims (11)
1. A network communication card for facilitating ultra high frequency (UHF) radio communication between a terminal and a base station, the network communication card being in communication with an antenna and comprising a double-sided multilayer printed circuit board (PCB), the PCB comprising:
(a) a digital interface for communicating between the PCB and the terminal;
(b) a receiver for receiving incoming radio signals from the base station and processing the received signals for communication to the terminal via the digital interface;
(c) a transmitter for transmitting outgoing radio signals from the terminal via the digital interface to the base station, the transmitter including:
(i) a digital synthesizer for providing a highly accurate modulated carrier signal;
(ii) an upconversion circuit for increasing the frequency of the carrier signal;
(iii) a filter for filtering spurious content from the carrier signal;
(iv) a phase locked loop (PLL) comprising a synthesizer and a voltage controlled oscillator (VCO) for generating a transmission signal from the filtered carrier signal; and (v) a transmission circuit for transmitting the transmission signal via the antenna.
(a) a digital interface for communicating between the PCB and the terminal;
(b) a receiver for receiving incoming radio signals from the base station and processing the received signals for communication to the terminal via the digital interface;
(c) a transmitter for transmitting outgoing radio signals from the terminal via the digital interface to the base station, the transmitter including:
(i) a digital synthesizer for providing a highly accurate modulated carrier signal;
(ii) an upconversion circuit for increasing the frequency of the carrier signal;
(iii) a filter for filtering spurious content from the carrier signal;
(iv) a phase locked loop (PLL) comprising a synthesizer and a voltage controlled oscillator (VCO) for generating a transmission signal from the filtered carrier signal; and (v) a transmission circuit for transmitting the transmission signal via the antenna.
2. The network communication card as defined in claim 1 designed to conform to a small form factor;
3. The network communication card as defined in claim 2, wherein the form factor is PC-Card Type III.
4. The network communication card as defined in claim 1, wherein the digital interface is laid out primarily on a second side of the PCB.
5. The network communication card as defined in claim 4, wherein the transmitter and receiver are laid out primarily on a first side of the PCB.
6. The network communication card as defined in claim 5, wherein at least a portion of the phase locked loop of the receiver is laid out on the second side of the PCB
and is in communication with the first side of the PCB via an electrical connection through the PCB.
and is in communication with the first side of the PCB via an electrical connection through the PCB.
7. The network communication card as defined in claim 5, wherein at least a portion of the phase locked loop of the transmitter is laid out on the second side of the PCB
and is in communication with the first side of the PCB via an electrical connection through the PCB.
and is in communication with the first side of the PCB via an electrical connection through the PCB.
8. The network communication card as defined in claim 5, wherein the first side of the PCB
is divided into compartments, each compartment for including specific portions of the transmitter and receiver that are least likely to interfere with each other, the compartments being delineated by conducting ground traces.
is divided into compartments, each compartment for including specific portions of the transmitter and receiver that are least likely to interfere with each other, the compartments being delineated by conducting ground traces.
9. The network communication card as defined in claim 8, wherein the conducting ground traces are arranged to correlate with shield walls in a housing such that when the network communication card is encased in the housing, the shield walls are in contact with the conducting ground traces thereby creating separately housed compartments.
10. The network communication card as defined in claim 1, wherein the upconversion circuit comprises a harmonic selection filter for selecting a harmonic of a clock signal for mixing with the output of the digital synthesizer for providing the increased frequency carrier signal.
11. The network communication card as defined in claim 10, wherein the filter comprises a SAW filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2499328A CA2499328C (en) | 2005-03-04 | 2005-03-04 | Digital wireless narrow band radio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2499328A CA2499328C (en) | 2005-03-04 | 2005-03-04 | Digital wireless narrow band radio |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2499328A1 true CA2499328A1 (en) | 2006-09-04 |
| CA2499328C CA2499328C (en) | 2012-11-27 |
Family
ID=36955280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2499328A Active CA2499328C (en) | 2005-03-04 | 2005-03-04 | Digital wireless narrow band radio |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2499328C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8049671B2 (en) | 2007-09-04 | 2011-11-01 | Sierra Wireless, Inc. | Antenna configurations for compact device wireless communication |
| US8059046B2 (en) | 2007-09-04 | 2011-11-15 | Sierra Wireless, Inc. | Antenna configurations for compact device wireless communication |
| CN107598926A (en) * | 2017-09-21 | 2018-01-19 | 广州市华科尔科技股份有限公司 | A kind of robot control system |
-
2005
- 2005-03-04 CA CA2499328A patent/CA2499328C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8049671B2 (en) | 2007-09-04 | 2011-11-01 | Sierra Wireless, Inc. | Antenna configurations for compact device wireless communication |
| US8059046B2 (en) | 2007-09-04 | 2011-11-15 | Sierra Wireless, Inc. | Antenna configurations for compact device wireless communication |
| CN107598926A (en) * | 2017-09-21 | 2018-01-19 | 广州市华科尔科技股份有限公司 | A kind of robot control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2499328C (en) | 2012-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |