Systems, Apparatus, and Methods for Transceiver Filters

Abstract

A system, apparatus, and method for a transceiver filter is provided. [Solution] The transceiver system may include a transmitter, a receiver, an antenna port connectable to the transmitter or receiver, a filter transmit port, and a filter return port. The filter port may be on the antenna side or the receiver side and connectable across at least one filter between the antenna port and the receiver. The transceiver device may include a housing containing the transmitter, the receiver, a transceiver switch, and a filter switch assembly within a chamber of the housing. The port may be accessible through a wall of the housing. A method of filtering a signal includes switching a receiver or transceiver of the transceiver system from an unfiltered path connected to the antenna port to a filtered path connected to the antenna port in response to a first signal. The method may further include switching the receiver to the unfiltered path in response to a second signal.

Description

[Technical Field]

[0001] FIELD OF THE DISCLOSURE The present disclosure relates to transceivers, and more particularly to systems, apparatus, and methods for transceiver filters. [Background technology]

[0002] A transceiver may transmit and receive signals via an antenna. The signals transmitted to or received from the antenna may be susceptible to interference. For example, another transmitter or electromagnetic system may generate an interfering signal. Duplexers or diplexers may be used to attenuate the interfering signal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] US Patent Application Publication No. 2012 / 171968A1 Summary of the Invention

[0004] FIELD OF THE DISCLOSURE The present disclosure relates to transceivers, and more particularly to systems, apparatus, and methods for transceiver filters. The transceivers may be radio transceivers.

[0005] In an embodiment, the present disclosure describes a transceiver system connectable to at least one filter. The transceiver system may include a transmitter, a receiver, an antenna port connectable to the transmitter or the receiver, a filter send port, and a filter return port. One of the filter send port and the filter return port may be on the antenna side. The other of the filter send port and the filter return port may be on the receiver side. The filter send port and the filter return port may be connectable across the at least one filter between the antenna port and the receiver.

[0006] In an embodiment, the present disclosure describes a transceiver device connectable to at least one filter. The device may include a housing. The housing may include a transmitter, a receiver, a transceiver switch, and a filter switch assembly within a chamber of the housing. The housing may further include an antenna port, a filter transmit port, and a filter return port accessible through a wall of the housing. One of the filter transmit port and the filter return port may be on the antenna side. The other of the filter transmit port and the filter return port may be on the receiver side. The filter transmit port and the filter return port may be connectable across at least one filter provided outside the housing between the antenna port and the receiver. The transmitter may be isolated from each of the filter transmit port and the filter return port. The filter switch assembly is configured to connect the receiver to the antenna port via (i) the filter or (ii) an unfiltered path isolated from each of the filter transmit port and the filter return port. The transceiver switch is configured to connect the antenna port to (i) the transmitter or (ii) the receiver.

[0007] In an embodiment, the present disclosure describes a method for filtering a signal. The method may include, in response to a first signal, switching, by a controller, a receiver of a transceiver system from an unfiltered path connected to an antenna port to a filtered path connected to the antenna port. The filtered path may include a filter connected between a filter transmit port and a filter return port of the transceiver system. The filtered path may be isolated from a transmitter of the transceiver system. The method may further include, in response to a second signal, switching, by the controller, the receiver from the filtered path to the unfiltered path.

[0008] Additional systems, methods, devices, features, and aspects may be realized through the techniques of various embodiments of the present disclosure. Other embodiments and aspects of the present disclosure are described in detail herein and are considered a part of the claimed subject matter. Other features can be understood or will become apparent by reference to the specification and drawings. [Brief explanation of the drawings]

[0009] Having described the present disclosure in general terms, reference is now made to the accompanying drawings, which are not necessarily drawn to scale. [Figure 1] 1 is a block diagram illustrating a transceiver system connectable to a transceiver antenna and at least one filter. [Figure 2] 1 shows a connector diagram of a transceiver device that can be connected to a transceiver antenna and filter. FIG. [Figure 3] 3 shows an assembly including the transceiver device of FIG. 2 connected to a transceiver antenna and a filter. [Figure 4] FIG. 1 shows a kit including a transceiver device and a case or housing containing at least one filter. [Figure 5]1 is a block diagram illustrating a transceiver system connectable to a transceiver antenna and at least one transmit filter.

[0010] Embodiments of the present disclosure are described in more detail below with reference to the accompanying drawings, in which exemplary embodiments of the present disclosure are shown. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Like numbers refer to like, but not necessarily identical, elements throughout.

[0011] The following embodiments are described in sufficient detail to enable at least one skilled in the art to understand and use the present disclosure, and it is understood that other embodiments will be apparent based on the present disclosure, and that process, mechanical, material, dimensional, process equipment, and parametric changes may be made without departing from the scope of the present disclosure.

[0012] In the following description, numerous specific details are set forth to provide a thorough understanding of various embodiments of the present disclosure. However, it will be apparent that the present disclosure may be practiced without these specific details. To avoid obscuring the present disclosure, some well-known system configurations and process steps may not be disclosed in full detail. Similarly, the drawings illustrating embodiments of the present disclosure are semi-diagrammatic and not to scale; in particular, some dimensions may be exaggerated in the drawings for clarity of presentation. In addition, when multiple embodiments are disclosed and described as having certain features in common, similar and like features will generally be described with like reference numerals, even if the features are not identical, for clarity and ease of illustration, description, and understanding thereof. DETAILED DESCRIPTION OF THE INVENTION

[0013] The present disclosure relates to transceivers, and more particularly to transceiver filter systems, apparatus, and methods. External filters can be inserted into the receive path of a transceiver to suppress blocking interferers, eliminating losses in the transmit path and thus maintaining full transmit power. One or more filters can be introduced into the receive path to target receive interference sources. A single connection point to the antenna system can be used, while one or more appropriate in-line filters can be added to reduce interfering signals that may block the receiver.

[0014] Radios can suffer from receiver degradation in the presence of strong levels of interfering signals. Radio frequency (RF) filters, such as low pass, high pass, band pass, band stop, or other types of filters, can be used to prevent interfering signals from interfering with the reception of the desired signal. However, adding external filters can add insertion loss to the transmit (TX) path, which is common to the receive (RX) path, potentially reducing output power. This can limit the usable distance range of the entire system. The additional insertion loss in the TX path can waste energy, limit performance, and increase infrastructure costs.

[0015] Instead of using a filter in the common path, the TX and RX paths may be split. However, splitting the TX and RX paths into separate external channels may require the use of a combination method so that a single antenna can still be used for the system. External filters can be used with duplexers or diplexers in combination with targeted filtering to separate the TX and RX paths of a transceiver interface. However, such configurations can add loss to the TX channel, degrading system performance and increasing system complexity, cost, physical size, weight, and maintenance requirements.

[0016] This disclosure describes systems, devices, and methods that can insert one or more external filters into the RF-RX path of a transceiver (e.g., after the first TR (transmit / receive) switch that adds a breakout path). Alternatively, one or more external filters can be inserted into the TX path of the transceiver as well.

[0017] In an embodiment, the present disclosure describes a transceiver system connectable to at least one filter. The transceiver system may include a transmitter, a receiver, an antenna port connectable to the transmitter or receiver, a filter transmit port, and a filter return port. One of the filter transmit port and the filter return port may be on the antenna side. The other of the filter transmit port and the filter return port may be on the receiver side. The filter transmit port and the filter return port may be connectable across at least one filter between the antenna port and the receiver.

[0018] Such a configuration does not substantially affect the system loss of the TX path. If additional filtering is not required, the alternative filtered path is not used. If a blocking signal is present that degrades RX performance, the filters can be switched so that the appropriate filter for the interference or blocking is used. The user can use different filters or combinations of filters depending on the interfering signal. The switching mechanism is user selectable and can be manually controlled, software controlled, or dynamically controlled based on receive signal quality indicators to switch in the required external filter as needed.

[0019] In an embodiment, the present disclosure describes a transceiver device connectable to at least one filter. The device may include a housing. The housing may include a transmitter, a receiver, a transceiver switch, and a filter switch assembly within a chamber of the housing. The housing may further include an antenna port, a filter transmit port, and a filter return port accessible through a wall of the housing. One of the filter transmit port and the filter return port may be on the antenna side. The other of the filter transmit port and the filter return port may be on the receiver side. The filter transmit port and the filter return port may be connectable across at least one filter provided outside the housing between the antenna port and the receiver. The transmitter may be isolated from each of the filter transmit port and the filter return port. The filter switch assembly is configured to connect the receiver to the antenna port via (i) the filter or (ii) an unfiltered path isolated from each of the filter transmit port and the filter return port. The transceiver switch is configured to connect the antenna port to (i) the transmitter or (ii) the receiver.

[0020] Therefore, in the systems and apparatus according to the present disclosure, other than the filter itself, no additional external infrastructure such as a combiner, duplexer, or diplexer may be required because there is no need to split or combine the TX and RX signals to or from a single connection point for the antenna system. Integrated RF switches or discrete circuitry can be used based on the design requirements of the end radio transceiver system.

[0021] In an embodiment, the present disclosure describes a method for filtering a signal. The method may include, in response to a first signal, switching, by a controller, a receiver of a transceiver system from an unfiltered path connected to an antenna port to a filtered path connected to the antenna port. The filtered path may include a filter connected between a filter transmit port and a filter return port of the transceiver system. The filtered path may be isolated from a transmitter of the transceiver system. The method may further include, in response to a second signal, switching, by the controller, the receiver from the filtered path to the unfiltered path.

[0022] By using switching in the RX path before combining via the transceiver TR switch, access for external filtering can be provided as needed for specific interference or blocking issues without adding additional loss to the system in the TX path. This method can also be implemented with a standard single-port antenna connection, with two additional ports (filter transmit and receive ports) added to introduce filters into the RX path only, without affecting the TX path. The filter transmit and receive ports in the RX path allow any type of filter to be inserted to resolve desired signal reception blocking issues, if needed. Switching from a filtered to an unfiltered path connects the RX path directly to the antenna when filtering is not required. In either case, the TX path remains unchanged, without adding additional loss, as with standard transceiver designs. This method therefore allows the use of external combiners, duplexers, or diplexers, even in the presence of noise, interference, or blocking, resulting in reduced TX power but allowing integration into existing infrastructure.

[0023] Although one or more filters have been described as being inserted between the antenna and the receiver, in embodiments, one or more filters may be inserted between the antenna and the transmitter. For example, by swapping the positions of the transmitter and receiver in the circuit, the TX path can be filtered while the RX path does not experience added loss.

[0024] The systems, apparatus, and methods disclosed herein may provide various advantages. For example, infrastructure costs can be reduced by eliminating the need for large and expensive combiners, duplexers, or diplexers. Because filters only need to handle the power associated with the RX signal (rather than the power associated with the combined TX and RX paths), filters do not need to handle high RF power levels. Therefore, smaller, less expensive filters can be used. Filters can be replaced or combined for interference, maintenance, or upgrades without requiring access to or modification of the transceiver system itself. Installation space requirements are reduced. Insertion loss in the RX path from the filter and the TX chain from the combiner is avoided. Furthermore, complex integrated (internal) filter designs for the RX chain are eliminated. Furthermore, a conventional duplexer / diplexer configuration using only two ports, the TX input and the RX input, can be used. Similar advantages apply to the RX path in a configuration where a filter is inserted in the TX path and the RX path is unfiltered.

[0025] 1 is a block diagram illustrating a transceiver system 10 connectable to a transceiver antenna 12 and at least one filter 14. The filter 14 may be used to selectively attenuate interference in a receive (RX) path 16 of the transceiver system 10 without introducing loss or substantially affecting signal transmission in a transmit (TX) path 18 of the transceiver system.

[0026] The transceiver system 10 may include a transmitter 20 and a receiver 22, e.g., an RF transmitter and receiver. The transceiver system 10 further includes an antenna port 24 that may be connected to the transmitter 20 or the receiver 22. For example, the antenna 12 may be connectable to the transmitter 20 via the TX path 18 and to the receiver 22 via the RX path 16.

[0027] The transceiver system may further include a filter transmit port 26 and a filter return port 28. The filter transmit port 26 and the return port 28 may be used to connect the filter 14 to the system 10, particularly along or to the RX path 16. The filter transmit and return ports 26 and 28 may be connectable across at least one filter 14 between the antenna port 24 and the receiver 22. For example, the filter transmit and return ports 26 or 28 may be screw-on, press-on, or clip-on ports to which a cable may be connected to introduce the filter 14 across the port 26 or 28. Thus, the filter 14 may be an external component that is ultimately connected to the transceiver system 10.

[0028] There may be one or more filters 14. For example, at least two filters, e.g., two, three, four, or more filters, may be connected in any combination, in series or parallel. Filter 14 may be combined with or replaced by one or more different or identical filters, e.g., other filters having similar or different filter characteristics.

[0029] The filter 14 may include low pass, high pass, band pass, band stop, or other types of filters, or any suitable combination thereof. The filter 14 may be an RF filter or may operate at other frequencies. The filter 14 may be a passive filter or an active filter. In embodiments, a power source may be connected to the filter 14. In some embodiments, the filter 14 may derive power from the transceiver system 10 itself or from a signal received via the antenna 12.

[0030] One of the filter transmit or return ports 26 or 28 may be on the antenna side 27 (indirectly or directly coupled to the antenna 12 or antenna port 24), and the other of ports 26 or 28 may be on the receiver side 29 (indirectly or directly coupled to the receiver 22). For example, the path to the antenna 12 via antenna port 24 may be associated with one of ports 26 or 28, and the RX path may be associated with the other of ports 26 or 28.

[0031] In an embodiment, the transmitter 20 is isolated from each of the filter transmit and return ports 26, 28. Thus, the presence of the filter 14 may not interfere with the TX path 18 or otherwise with the transmitter 20. For example, one or more switches may be used to switch between the RX path 16 and the TX path 18 and isolate these paths from each other or from other components of the transceiver system 10.

[0032] In an embodiment, the transceiver system 10 further includes a transceiver switch 30 configured to connect the antenna port 24 to either (i) the transmitter 20 or (ii) the receiver 22. The transceiver switch 30 can be switched between a TX mode and an RX mode. For example, in the RX mode, the transceiver switch 30 may connect only the RX path 16 to the antenna port 24 (and ultimately to the antenna 12). Similarly, in the TX mode, the switch 30 may connect only the TX path 18 to the antenna port 24 (and ultimately to the antenna 12). The transceiver switch 30 may be a single-pole double-throw switch, a toggle, or any other suitable switch. The transceiver switch 30 may include integrated or discrete components.

[0033] The RX path 16 may also be connected to or isolated from the filter transmit port 26 and return port 28 (and ultimately the filter 14) via switching. In embodiments, the transceiver system 10 may further include a filter switch assembly 32. The filter switch assembly 32 may be configured to connect the receiver 22 to the antenna port 24 via (i) the filter 14 or (ii) an unfiltered path 33 isolated from each of the filter transmit and return ports 26 and 28. The unfiltered path 33 directly connects the receiver 22 to the antenna port 24 without filtering by the filter 14. The filter switch assembly 32 may include a multi-pole switch or a combination of single-pole switches or toggles. In some embodiments, the filter switch assembly 32 includes a first filter switch 34. The first filter switch 34 is configured to connect the receiver 22 to one of (i) the filter return port 28 or (ii) the unfiltered path 33. The filter switch assembly 32 may further include a second filter switch 36 configured to connect the antenna 12 (or antenna port 24) to either (i) the filter transmit port 26 or (ii) the unfiltered path 33. One or both of the first and second filter switches 34 and 36 may be single-pole double-throw switches. One or both of the first and second filter switches 34 and 36 may include integrated or discrete components. Thus, the filter 14 may be connected to or isolated from the receiver 22 via one or more switches.

[0034] In embodiments, switches 34 and 36 may not be present and an unfiltered path 33 may not be provided. In some such embodiments, receiver 22 may be connected directly to return port 28 along path 16 (without switch 34), and transmit port 26 may be connected to antenna port 24 without switch 36. In such embodiments, a jumper may be provided between ports 26 and 28 if filtering is not required.

[0035] In an embodiment, the transceiver system further includes a controller 40. The controller 40 may operate or control one or more components of the transceiver system 10. The controller 40 may control one or more components by wired or wireless signals.

[0036] The controller 40 may be configured to switch the filter switch assembly 32 in response to a first signal and to switch the transceiver switch 30 in response to a second signal. For example, the controller 40 may cause the filter switch assembly 32 to switch between the unfiltered path 33 or the filtered path 16 to appropriately connect an unfiltered or filtered receiver to the antenna port 24.

[0037] In an embodiment, controller 40 is configured to switch filter switch assembly 32 to (i) connect receiver 22 to antenna port 24 via filter 14 in response to detecting the presence of interference, and (ii) connect receiver 22 to antenna port 24 via unfiltered path 33 in response to detecting low or no interference. In this manner, when interference is below a threshold or when there is no interference, filter 14 is isolated from receiver 22, avoiding potential losses through filter 14.

[0038] In an embodiment, the transceiver system 10 further includes a housing 50. The housing 50 may be formed of or include a metal, an alloy, a plastic, a composite material, or any suitable material. The housing 50 may be water resistant or water proof. The housing 50 may include the transmitter 20 and the receiver 22, with the filter 14 configured to be coupled to the exterior of the housing 50 between the filter transmit port 26 and the return port 28.

[0039] 2 illustrates a connector diagram of a transceiver device 60 that can be connected to a transceiver antenna and filter. Device 60 can include a housing 50. Housing 50 can include a transmitter, a receiver, a transceiver switch, and a filter switch assembly (each as described with reference to system 10 of FIG. 1) within a chamber of housing 50. Housing 50 can further include antenna port 24, filter transmit port 26, and filter return port 28 accessible through a wall of the housing. Housing 50 can include additional components and connections, for example, for power, internet or network connectivity, etc.

[0040] In the transceiver device 60, one of the filter transmit port 26 and the return port 28 may be on the antenna side, and the other of the filter transmit port 26 and the return port 28 may be on the receiver side. The filter ports 26 and 28 may be connectable across at least one filter 14 external to the housing 60 between the antenna port 24 and the receiver. The transmitter may be isolated from each of the filter ports 26 and 28.

[0041] 3 illustrates an assembly 100 including the transceiver device 60 of FIG. 2 connected to a transceiver antenna 12 and a filter 14. A user can replace or combine the filter 14 with other filters without having to open the housing 50 of the transceiver device 60 or access or modify the components inside the housing 50 of the transceiver device 60.

[0042] The transceiver device 60 may be provided with one or more filters as a kit.

[0043] FIG. 4 illustrates a kit 200 including a case or housing 202 containing a transceiver device 60 and at least one filter 14. The case 202 can be formed of a metal, alloy, plastic, fabric, composite material, or a combination thereof. The case 202 can be a clamshell case or other suitable case. The case 202 can be flexible or rigid. The case 202 can define a single interior compartment or can define separate dedicated compartments for the transceiver device 60 or the at least one filter 14. The case 202 can include additional compartments or clips for holding additional filters suitable for use with the transceiver device 60. For example, the kit can include at least two filters configured to filter different interfering signals. The at least two filters can be configured to be used separately or together in any combination, such as in series or parallel.

[0044] While the system 10 of Figure 1, the device 60 of Figure 2, the assembly 100 of Figure 3, and the kit 200 of Figure 4 have been described with reference to connecting a receiver to a filter or otherwise filtering the RX path, similar systems, devices, assemblies, and kits can be used to connect a transmitter to a filter or otherwise filter the TX path. For example, the locations of the transmitter 20 and receiver 22 could be switched to have the same configuration, with the other components remaining the same, and the filter 14 inserted between the transmitter 20 and the antenna port 24 (instead of between the receiver 22 and the antenna port 24).

[0045] FIG. 5 is a block diagram illustrating a transceiver system 300 that can be connected to a transceiver antenna 12 and at least one filter 14. The transceiver system 300 of FIG. 5 is substantially similar to the transceiver system 10 of FIG. 1, except for the location of the radio receiver 22 and the transmitter 20. In particular, the locations of the radio receiver 22 and the transmitter 20 shown in FIG. 1 have been swapped in FIG. 5, while other components remain the same. Thus, in the transceiver system 300, path 18 is the RX path, path 16 is the TX path, and the filter 14 can be used to selectively attenuate interference in the TX path 16 of the transceiver system 10 without introducing loss or substantially affecting signal transmission in the RX path 18 of the transceiver system 300. In the transceiver system 300, the filter 14 can be inserted between the transmitter 20 and the antenna port 24 (in a manner similar to the insertion of the filter 14 between the receiver 22 and the antenna 24 described with reference to the transceiver system 10 of FIG. 1).

[0046] The device 60 of FIG. 2 may include components as described with reference to the transceiver 300 of FIG. 5, with one of the filter transmit / receive ports 26 or 28 on the antenna side and the other of the filter transmit / receive ports 26 and 28 on the transmitter side. The filter ports 26 and 28 may be connectable across at least one filter 14 external to the housing 60 between the antenna port 24 and the transmitter. A receiver may be isolated from each of the filter ports 26 and 28. Such a device may alternatively be provided in the assembly 100 of FIG. 3 or the kit 200 of FIG. 4. In this way, the filter 14 may be introduced into the TX path without adding loss to the RX path. Such a configuration may be used to eliminate or reduce interference.

[0047] In an embodiment, the present disclosure describes a method for filtering a signal. For example, the method can filter a signal between an antenna (or antenna port) and a receiver, or RX path. The method can include, in response to a first signal, switching, by a controller, a receiver of the transceiver system from an unfiltered path connected to the antenna port to a filtered path connected to the antenna port. The filtered path can include a filter connected between a filter transmit port and a filter return port of the transceiver system. The filtered path can be isolated from a transmitter of the transceiver system. The method can further include, in response to a second signal, switching, by the controller, the receiver from the filtered path to the unfiltered path.

[0048] In embodiments, the present disclosure describes a method for filtering a signal between an antenna (or antenna port) and a transmitter, or TX path. In embodiments, the method may include, in response to a first signal, switching, by a controller, a transmitter of a transceiver system from an unfiltered path connected to the antenna port to a filtered path connected to the antenna port. The filtered path may include a filter connected between a filter transmit port and a filter return port of the transceiver system. The filtered path may be isolated from a receiver of the transceiver system. The method may further include, in response to a second signal, switching, by the controller, the transmitter from the filtered path to the unfiltered path.

[0049] In either method of filtering the RX path or the TX path, the first signal may indicate the presence of interference, and the second signal may indicate the absence of interference. Either method may further include connecting at least one filter between the filter transmit port and the filter return port. For example, a user may select an appropriate filter and couple the filter between the filter transmit port and the filter return port. [Explanation of symbols]

[0050] 10: Transceiver system 12: Transceiver antenna 14: Filter 16: Receive (RX) path 18: Transmit (TX) path 20: Transmitter 22: Receiver 24: Antenna port 26: Filter transmit port 27: Antenna side 28: Filter return port 29: Receive side 30: Transmit / receive switch 32: Filter switch assembly 33: Unfiltered path 34, 36: Switch 40: Controller 50: Housing 60: Transceiver device 100: Assembly 200: Kit 202: Case 300: Transmit / receive system

Claims

1. 1. A transceiver system connectable to at least one filter, comprising: A transmitter; a receiver; an antenna port connectable to a transmitter or a receiver; a filter transmit port; a filter return port; Including, one of the filter transmit port and the filter feedback port is on the antenna side, and the other of the filter transmit port and the filter feedback port is on the receive side; A transceiver system in which the filter transmit port and the filter feedback port are connectable across at least one filter between the antenna port and the receiver.

2. 10. The transceiver system of claim 1, wherein the transmitter is isolated from each of the filter transmit port and the filter return port.

3. 3. The transceiver system of claim 1, further comprising a housing that defines a transmitter and a receiver, the filter being configured to be coupled to the exterior of the housing between the filter transmit port and the filter return port.

4. 10. The transceiver system of claim 1, further comprising at least one filter connected between the filter transmit port and the filter return port.

5. 10. The transceiver system of claim 1, wherein the at least one filter comprises at least two filters connected in any combination of series or parallel.

6. 10. The transceiver system of claim 1, further comprising a filter switch assembly configured to connect the receiver and the antenna port via (i) the filter or (ii) an unfiltered path separate from each of the filter transmit port and the filter return port.

7. The filter switch assembly a first filter switch configured to connect the receiver to (i) the filter return port or (ii) the unfiltered path; a second filter switch configured to connect the antenna to either (i) the filter transmit port or (ii) the unfiltered path; 7. The transceiver system of claim 6, comprising:

8. 8. The transceiver system of claim 7, wherein each of the first filter switch and the second filter switch is a single-pole, double-throw switch.

9. The transceiver system of claim 6 , further comprising a transceiver switch configured to connect the antenna port to either (i) a transmitter or (ii) a receiver.

10. 10. The transceiver system of claim 9, wherein the transceiver switch is a single-pole, double-throw switch.

11. 10. The transceiver system of claim 9, further comprising a controller configured to switch the filter switch assembly in response to a first signal and to switch the transceiver switch in response to a second signal.

12. 12. The transceiver system of claim 11, wherein the controller is configured to switch the filter switch assembly to (i) connect the receiver and antenna port through the filter in response to detecting the presence of interference, and (ii) connect the unfiltered path in response to detecting the absence of interference.

13. The transceiver system of claim 1 further comprising an antenna connected to the antenna port.

14. 1. A transceiver device connectable to at least one filter, comprising: a housing having a transmitter, a receiver, a transceiver switch, and a filter switch assembly within its chamber; the housing further comprises an antenna port, a filter transmit port, and a filter return port, each port being accessible through a wall of the housing; one of the filter transmit port and the filter feedback port is on the antenna side, and the other of the filter transmit port and the filter feedback port is on the receive side; the filter transmit port and the filter return port are connectable across at least one filter external to the housing between the antenna port and the receiver; the transmitter is isolated from each of the filter transmit port and the filter return port; the filter switch assembly is configured to connect the receiver to the antenna port via (i) the filter or (ii) an unfiltered path separate from each of the filter transmit port and the filter return port; A transceiver device, wherein the transceiver switch is configured to connect the antenna port to either (i) a transmitter or (ii) a receiver.

15. 1. A method for filtering a signal, comprising: switching, by the controller, in response to the first signal, a receiver of the transceiver system from an unfiltered path connected to the antenna port to a filtered path connected to the antenna port; switching, by the controller, the receiver from the filtered path to the unfiltered path in response to the second signal; Including, the filtered path includes a filter connected between a filter transmit port and a filter return port of the transceiver system; The method wherein the filtered path is isolated from a transmitter of the transceiver system.

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