1. A receiver comprising:
a first receiving channel comprising:
a saw filter;
an amplifier responsive to the saw filter; and
a frequency converter; and
a second receiving channel comprising:
an amplifier;
a frequency converter; and
a received signal strength indicator (RSSI) operative to detect a blocker signal.
2. The receiver of claim 1 wherein said receiver is disposed in a device comprising a transceiver.
3. The receiver of claim 1 wherein said RSSI is coupled to an input terminal of the amplifier.
4. The receiver of claim 1 further comprising at least one processor operative to combine signals processed through the first and second receiving channels.
5. The receiver of claim 4 wherein said processor is a baseband processor.
6. The receiver of claim 4 wherein said processor assigns a weight to the signal received by the second receiving channel in accordance with a strength of the detected blocker signal.
7. The receiver of claim 4 wherein said RSSI outputs a signal indicating detection of a blocker signal if a difference between a signal value detected by the RSSI and the signal value sensed by the first receiving channel exceeds a predetermined threshold.
8. The receiver of claim 4 wherein said RSSI outputs a signal indicating detection of a blocker signal if an increase in signal value detected by the RSSI does not occur with a corresponding increase in the signal value sensed by the first receiving channel.
9. The receiver of claim 4 wherein said processor assigns a weight of zero to the signal received by the second receiving channel.
10. The receiver of claim 1 further comprising:
a by-pass circuit adapted to provide a conduction path between the amplifier of the second receiving channel and the ground terminal when the RSSI detects a blocker signal.
11. The receiver of claim 10 wherein said circuit includes a transistor having a gate terminal responsive to the RSSI, a first current carrying terminal coupled to an input terminal of the amplifier of the second receiving channel, and a second current carrying terminal coupled to the ground.
12. The receiver of claim 1 wherein said first receiving channel further comprises an RSSI adapted to detect the blocker signal.
13. A method of receiving a signal, the method comprising:
providing a first receiving channel comprising a saw filter, an amplifier responsive to the saw filter, and a frequency converter; and
providing a second receiving channel comprising an amplifier, a frequency converter, and a received signal strength indicator (RSSI), said RSSI operative to detect a blocker signal.
14. The method of claim 13 further comprising:
placing the receiver in a device; and
placing a transceiver in the device.
15. The method of claim 13 further comprising:
coupling the RSSI to an input terminal of the amplifier of the second receiving channel.
16. The method of claim 13 further comprising:
combining signals processed through the first and second receiving channels.
17. The method of claim 16 wherein said combining is performed by a baseband processor.
18. The method of claim 16 further comprising:
assigning a weight to the signal received by the second receiving channel in accordance with a strength of the detected blocker signal.
19. The method of claim 16 further comprising:
outputting a signal indicating detection of a blocker signal if a difference between a signal value detected by the RSSI and the signal value sensed by the first receiving channel exceeds a predetermined threshold.
20. The method of claim 16 further comprising:
outputting a signal indicating detection of a blocker signal if an increase in signal value detected by the RSSI does not occur with a corresponding increase in the signal value sensed by the first receiving channel.
21. The method of claim 16 further comprising:
assigning a weight of zero to the signal received by the second receiving channel.
22. The method of claim 13 further comprising:
providing a conduction path between the amplifier of the second receiving channel and a ground terminal when the RSSI detects a blocker signal.
23. The method of claim 22 wherein said conduction path is provided by a transistor having a gate terminal responsive to the RSSI, a first current carrying terminal coupled to an input terminal of the amplifier of the second receiving channel, and a second current carrying terminal coupled to the ground terminal.
24. The method of claim 13 further comprising:
placing an RSSI in the second receiving channel.
25. A transmittingreceiving circuit comprising:
at least one transceiver;
at least a first receiving channel comprising:
a saw filter;
an amplifier; and
a frequency converter;
at least a second receiving channel comprising:
an amplifier;
a frequency converter; and
a received signal strength indicator (RSSI) adapted to detect signals transmitted by the transceiver.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An optical system for wavelength division demultiplexing, comprising:
a mirror including a plurality of angled surfaces that are configured to reflect light transmitted from a multi-core fiber; and
a plurality of filters configured to receive at least a portion of the reflected light, to filter at least one respective wavelength from said portion of the reflected light and to transmit at least one other respective wavelength of said portion to light sensitive elements.
2. The optical system of claim 1, wherein each of the angled surfaces is aligned with and receives light from a different core of said multi-core fiber.
3. The optical system of claim 2, wherein the multi-core fiber has six cores around an axis of the fiber and wherein the mirror is hexagonal and disposed at a center of said fiber.
4. The optical system of claim 1, wherein the plurality of filters are spaced apart and disposed around the mirror.
5. The optical system of claim 4, wherein the plurality of filters are concentric discs that are disposed around the mirror.
6. The optical system of claim 1, further comprising:
a reflector configured to direct the reflected light to each of the filters.
7. The optical system of claim 1, wherein the light sensitive elements include a plurality of photodiodes that are aligned with the filters, wherein each given photodiode of the plurality of photodiodes receives the light of the transmitted wavelength from the filter to which the given photodiode is aligned.
8. An optical system for wavelength division multiplexing, comprising:
a coupling mirror including a plurality of angled surfaces, wherein each of the angled surfaces is configured to direct light to a different core of a multi-core fiber; and
a plurality of sets of laser chips, wherein, in each set of the sets of laser chips, each laser chip transmits light at a different wavelength to a light guiding structure.
9. The optical system of claim 8, wherein the multi-core fiber has six cores around an axis of the fiber and wherein the mirror is hexagonal and disposed at a center of said fiber.
10. The optical system of claim 9, wherein the light guiding structure is configured to combine at least a portion of the light transmitted from at least one of the sets of laser chips and direct the combined light to the coupling mirror wherein the light guiding structure further comprises a set of micro-mirrors, wherein each of the micro-mirrors is configured to receive light from one respective laser chip from each set of the sets of laser chips.
11. The optical system of claim 10, wherein the micro-mirrors are spaced apart and disposed around the coupling mirror.
12. The optical system of claim 11, wherein the micro-mirrors are formed as concentric discs that are disposed around the coupling mirror.
13. The optical system of claim 10, wherein the light guiding structure further comprises sets of asymmetric lenses between the set of micro-mirrors and lasers of the sets of laser chips, wherein each of the asymmetric lenses is configured to direct light from one respective laser of the sets of laser chips.
14. The optical system of claim 13, wherein said laser chips are vertical cavity surface emitting laser (VCSEL) chips.
15. The optical system of claim 10, wherein the light guiding structure further comprises a reflector configured to direct the light transmitted from each laser chip of the sets of laser chips to the coupling mirror.
16. The optical system of claim 10, wherein the light guiding structure, for each set of the sets of laser chips, is configured to amalgamate the light from each laser chip in the set and direct the amalgamated light to the coupling mirror such that each of said surfaces receives the light from a different set of said plurality of sets of laser chips.
17. An optical system for wavelength division multiplexing with a multi-core fiber comprising:
a coupling mirror including a plurality of angled surfaces, wherein each of the angled surfaces is configured to direct light to a different core of the multi-core fiber; and
arrays of laser chips, wherein, in each array of the arrays of laser chips, each laser chip transmits light at a common wavelength to a plurality of waveguides.
18. The optical system of claim 17, wherein the plurality of waveguides is configured to combine at least a portion of the light transmitted from the arrays and direct the combined light to the coupling mirror.
19. The optical system of claim 18, wherein each of said waveguides is optically coupled to a different one of said angled surfaces.
20. The optical system of claim 18, wherein each of said waveguides includes micro-mirrors, wherein each of said micro-mirrors is configured to receive light from a different one of said arrays.