Modular satellite transceiver

• US 8,140,005 B2
• Filed: 07/17/2008
• Issued: 03/20/2012
• Est. Priority Date: 07/17/2007
• Status: Active Grant

• Current Assignee: ViaSat Incorporated
• Original Assignee: ViaSat Incorporated
• Inventors: Runyon, Donald L., Hamel, Anthony Guy, Martin, Timothy J., Sparks, William Joshua, Chou, Michael, Bacon, Andrew Michael
• Primary Examiner(s): TRINH, TAN H
• Application Number:
  US12/175,126
• Publication Number:
  US 20090028225A1
• Time in Patent Office: 1,342 Days
• Field of Search: 455/12.1, 455/3.02, 455/424, 455/90.3, 455/575.1, 455/575.7, 455/121, 455/177.1, 455/190.1, 455/189.1, 455/334, 455/341, 455/338, 455/466, 455/75, 455/78, 455/255, 455/269, 370/401, 370/389, 370/352, 370/297, 370/466, 370/328, 370/400, 370/331, 370/277, 370/342, 370/343, 370/139, 342/352, 342/359, 375/219, 375/232, 360/46, 360/65
• US Class Current: 455/12.1
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 21/205 providing an omnidirectional coverage turnstile aerials H01Q21/26
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H04B 1/0071 using a common intermediate frequency for more than one band H04B1/0075 takes precedence
• CPC Class Codes: H04B 1/18 Input circuits, e.g. for coupling to an antenna or a transmission line coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H
• CPC Class Codes: H04B 1/40 Circuits
• CPC Class Codes: H04B 7/0808 comparing all antennas before reception
• CPC Class Codes: H04B 7/18515 Transmission equipment in satellites or space-based relays

Abstract

A modular satellite transceiver is provided according to some embodiments of the disclosure. The modular transceiver may include an RF module and a back end module. The RF module may operate in a first band, and may include, for example, one or more antennas, an RF front end module, an up converter, a down converter, an analog-to-digital converter, and a digital-to-analog converter. The back end module may include various digital processing components and/or modules. The RF module may be removably coupled with the back end module such that the RF module may be replaced with another RF module operating in a second band. During transmission the back end module may provide at least one digital signal to the RF module; and during reception the RF module provides at least one digital signal to the back end module.

Claims

1. A modular satellite transceiver comprising:

an RF module operating in a first band, the RF module including one or more antennas, an RF front end module, a band converter, an analog-to-digital converter, and a digital-to-analog converter; and

a back end module that includes a digital processing module;

wherein the RF module is removably coupled with the back end module such that the RF module may be replaced with another RF module operating in a second band different from the first band;

wherein during transmission the back end module is configured to provide at least one digital representation of a modulated analog transmit signal to the RF module for digital-to-analog conversion and transmission; and

wherein during reception the RF module is configured to analog-to-digital convert at least one analog receive signal into at least one digital representation of a modulated analog receive signal, and provide the at least one digital representation of the modulated analog receive signal to the back end module for demodulation.

2. The modular satellite transceiver according to claim 1, wherein the back end module further comprises an encryption/decryption module.

3. The modular satellite transceiver according to claim 1, wherein the back end module provides power conditioning to at least the RF module.

4. The modular satellite transceiver according to claim 1, wherein the digital signal provided by the back end module is independent of communication waveform.

5. The modular satellite transceiver according to claim 1, wherein the digital signal provided by the back end module is independent of bandwidth.

6. The modular satellite transceiver according to claim 1, wherein the back end module packetizes the data prior to sending it to the RF module.

7. The modular satellite transceiver according to claim 1, wherein the back end module de-packetizes data received from the RF module.

8. A modular satellite transceiver comprising:

an RF module comprising a first antenna, a second antenna, one or more amplifiers, a digital-to-analog converter, an analog-to-digital converter, an up converter and a down converter, wherein the RF module is configured to receive a packetized digital representation of a modulated analog transmit signal, convert the packetized digital representation of the modulated analog transmit signal into an analog transmit signal, up convert the analog transmit signal and transmit the analog transmit signal to a satellite through the first or second antenna, wherein the RF module is configured to receive an analog receive signal from the first or second antenna, down convert the analog receive signal, and digitize the analog receive signal to provide at least one packetized digital representation of a modulated analog receive signal; and

a back end module removably coupled with the RF module and comprising at least a packetization module, wherein the back end module provides packetized digital representations of modulated analog transmit signals and receives packetized digital representations of modulated analog receive signals to and from the RF module.

9. The modular satellite transceiver according to claim 8, wherein the first antenna and the second antenna are substantially adjacent to one another within the RF module and arranged about a central location.

10. The modular satellite transceiver according to claim 8, wherein the RF module includes a central antenna about which the first antenna and the second antenna are arrayed.

11. A method for sending packetized data to a satellite using a modular transceiver that includes a back end module and an RF module, the method comprising:

digitally packetizing a data signal at the back end module to provide a packetized digital representation of a modulated transmit signal;

providing the packetized digital representation of the modulated transmit signal from the back end module to the RF module;

converting the packetized digital representation of the modulated transmit signal into an analog transmit signal at the RF module;

up converting the analog transmit signal at the RF module; and

transmitting the analog transmit signal toward the satellite using a first antenna.

12. A method for receiving data from a satellite using a modular transceiver that includes a back end module and an RF module, the method comprising:

receiving an analog receive signal from a satellite with an antenna at the RF module;

down converting the analog receive signal at the RF module;

converting the down converted signal at the RF module into a digital representation of a modulated receive signal;

providing the digital representation of the modulated receive signal to the back end module; and

digitally demodulating the digital representation of the modulated receive signal at the back end module.