Radio frequency module and methods of transmitting/receiving data
View Patent ↗A wireless module is configurable by a user to operate in different modes as a transmitter, receiver, transceiver, and repeater. A method of transmitting and receiving data while substantially reducing or eliminating interference from competing frequency bands, including Wi-Fi systems, as well as a method of transmitting data with a high degree of certainty without requiring an acknowledgement receipt, negotiation, or hand-shaking from a down line transceiver, receiver and/or repeater are disclosed.
1. A radio frequency module comprising:
a base member including a printed circuit board having a first surface and a second surface;
a transceiver assembly located on the printed circuit board and including:
a transceiver; and
a matching/filtering network having first and second ends;
the matching/filtering network having a plurality of passive series connected electrical components in a linear arrangement, with the first end thereof electrically connected to the transceiver;
a ground plane formed on the first surface and surrounding at least a substantial portion of the transceiver assembly;
a radio frequency shield electrically coupled to the ground plane and covering at least a substantial portion of the transceiver assembly;
a chip antenna located on the first surface of the printed circuit board outside of the shield and extending generally parallel with the matching/filtering network; and
a radio feed point extending between the chip antenna and the second end of the matching/filtering network, the chip antenna together with the matching/filtering network and the feed point forming a generally U-shape.
2. A radio frequency module according to claim 1 , wherein the radio frequency shield comprises an upper wall with front, rear and side walls extending from the upward wall, a lower end of each wall being soldered to the ground plane.
3. A radio frequency module according to claim 2 , wherein the front wall extends between and generally parallel to the matching/filtering network and the chip antenna, the grounded shield together with the location and orientation of the chip antenna and the matching/filtering network with respect to the front wall creating a single antenna structure that functions as a relatively large antenna in a relatively small space.
4. A radio frequency module according to claim 1 , and further comprising a plurality of connector pads located on the second surface of the printed circuit board for surface mounting the radio frequency module to another printed circuit board.
5. A radio frequency module according to claim 1 , and further comprising a first plurality of mode selection inputs for selecting one of a second plurality of operating modes of the radio frequency module.
6. A radio frequency module according to claim 5 , wherein the second plurality is greater than the first plurality.
7. A radio frequency module according to claim 6 , wherein the operating modes are selected from the group comprising: serial transceiver, serial network transceiver, active RFID transmitter, RFID logic switch output receiver, RFID logic switch network output; serial receiver, serial RFID receiver, serial network RFID receiver, input logic switch transmitter; output logic switch receiver; output logic switch network receiver; and repeater.
8. A radio frequency module according to claim 1 , wherein the transceiver is configured to transmit a data packet at a plurality of different frequencies to thereby substantially reduce or eliminate radio frequency interference.
9. A radio frequency module according to claim 8 , wherein the transceiver is configured to transmit the data packet multiple times over the plurality of different frequencies.
10. A radio frequency module according to claim 1 , wherein the transceiver is configured to transmit a data packet on the 2.4 GHz frequency band at a plurality of different frequencies between a plurality of different Wi-Fi channels.
11. A method of wirelessly transmitting data comprising:
transmitting a data packet on at least one frequency from a first location, the data packet including at least one repeat signal with an initialized value for a first transmission;
receiving the data packet at a second location;
determining whether the at least one repeat signal is at the initialized value;
transmitting the data packet to a third location with a modified repeat bit when the at least one repeat signal is the initialized value; and
discarding the data packet when the value of the at least one repeat signal is different from the initialized value.