Cable network based housing with improved signal integrity
By using a modified port inlet adapter in the CATV service network, the signal path and ground path are improved with elongated dielectric tubes and compressible conductive materials, the problem of insufficient signal integrity at high frequencies is solved, and more efficient signal transmission is achieved.
Patent Information
- Application Number
- CN202380077216.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-11-03
- Filing Date
- 2023-11-02
- Publication Date
- 2025-06-17
AI Technical Summary
While providing media content, modern cable television (CATV) service networks require efficient transmission of signals of a large number of digital communication services in the HFC network. However, prior art has difficulty ensuring signal integrity in a high frequency range, especially in signal transmission between physical cables and electronic devices.
By designing a modified port inlet adapter that includes an elongated dielectric tube and compressible conductive material for improving signal paths and ground paths between the cable and electronics, thereby providing a controlled impedance structure and enhancing signal integrity.
This technical method effectively improves signal integrity in the high frequency range, ensures that physical cables and electronic devices can effectively carry high bandwidth data, and solves the problem of insufficient signal integrity of traditional adapters at high frequency.
Smart Images
Figure CN120167110A_ABST
Abstract
Description
[0001] Cross - Reference to Related Applications
[0002] This application claims the benefit of priority of U.S. Provisional Application No. 63 / 422,358, filed on November 3, 2022, the content of which is incorporated herein by reference in its entirety. Technical Field
[0003] The subject matter of this application relates to signal integrity in cable distribution networks. Background Art
[0004] Cable television (CATV) services provide content from a central delivery unit, commonly referred to as a "head - end", to a large number of customers (e.g., subscribers). The central delivery unit distributes content channels from the central delivery unit to its customers through an access network including a hybrid fiber - coaxial (HFC) cable plant (including associated components (nodes, amplifiers, and splitters)). However, modern cable television (CATV) service networks not only provide media content such as television channels and music channels to customers, but also provide a large number of digital communication services such as Internet services, video - on - demand, telephone services such as VoIP, home automation / security, etc. These digital communication services, in turn, require communication not only in the downstream direction from the head - end to the customers through the HFC (which typically forms a branched network), but also in the upstream direction from the customers to the head - end, typically through the HFC network.
[0005] For this reason, CATV headends have historically included independent cable modem termination systems (CMTS) for providing high-speed data services, such as cable Internet, voice over Internet protocol, etc., to cable TV customers, and video headend systems for providing video services, such as broadcast video and video on demand (VOD). Typically, CMTS will include an Ethernet interface (or other more traditional high-speed data interface) and a radio frequency (RF) interface so that traffic from the Internet can be routed (or bridged) through the Ethernet interface, through the CMTS, and then arrive at the RF interface of the hybrid fiber coaxial (HFC) system connected to the cable TV company. Downstream traffic is delivered from the CMTS to the cable modem and / or set-top box in the customer's home, and upstream traffic is delivered to the CMTS from the cable modem and / or set-top box in the customer's home. The video headend system similarly provides video to a set-top box, a TV with a video decryption card, or other devices capable of demodulating and decrypting incoming encrypted video services. Many modern CATV systems have combined the functionality of a CMTS with a video delivery system (e.g., EdgeQAM - Quadrature Amplitude Modulation) in a single platform, often referred to as an integrated CMTS (e.g., an integrated converged cable access platform (CCAP)) - video services are prepared and provided to the I-CCAP, which then QAM modulates the video onto the appropriate frequency. Still other modern CATV systems, often referred to as distributed CMTS (e.g., distributed converged cable access platforms), may include a remote PHY (or R-PHY) that relocates the physical layer (PHY) of a traditional integrated CCAP by pushing it to the fiber nodes of the network (R-MAC PHY relocates both the MAC and PHY to the nodes of the network). Thus, while the core in the CCAP performs higher layer processing, the R-PHY device in the remote node converts downstream data sent from the core from digital to analog for transmission on radio frequency to a cable modem and / or set-top box, and converts upstream radio frequency data sent from the cable modem and / or set-top box from analog to digital format for optical transmission to the core. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] For a better understanding of the invention, and in order to show how it may be put into practice, reference will now be made, by way of example, to the accompanying drawings, in which:
[0007] Figure 1 An integrated cable modem termination system is shown.
[0008] Figure 2 A distributed cable modem termination system is shown.
[0009] Figure 3 A bridge with a tray is shown.
[0010] Figure 4 shows the interior of a bridge having four port inlet adapters Figure 3
[0011] Figure 5 shows Figure 3 a view of the exterior of a bridge
[0012] Figure 6 shows Figure 3 a view of the base of the tray of a bridge
[0013] Figure 7 shows Figure 3 the port inlet adapter of a bridge
[0014] Figure 8 shows Figure 3 the threaded mount of a bridge
[0015] Figure 9 shows Figure 3 a view of the port inlet adapter of a bridge
[0016] Figure 10 shows Figure 3 a view of a part of the port inlet adapter of a bridge
[0017] Figure 11 shows Figure 3 an exploded view and a cross-sectional view of the port inlet adapter of a bridge and an exploded view
[0018] Figure 12 shows Figure 3 the port inlet adapter of a bridge
[0019] Figure 13 shows a line extender having a tray
[0020] Figure 14 shows the interior of a line extender having two port inlet adapters Figure 13
[0021] Figure 15 shows Figure 13 a view of the exterior of a line extender
[0022] Figure 16 shows Figure 13 a view of the base of the tray of a line extender
[0023] Figure 17 shows Figure 13 the port inlet adapter of a line extender
[0024] Figure 18 showsFigure 13 Threaded mount for the line extender.
[0025] Figure 19 Shows Figure 13 Illustration of the port inlet adapter of the line extender.
[0026] Figure 20 Shows Figure 3 Illustration of a part of the port inlet adapter of the bridge.
[0027] Figure 21 Shows Figure 13 Illustration and cross-sectional view of the line extender.
[0028] Figure 22 Shows a modified port inlet adapter.
[0029] Figure 23 Shows Figure 22 The port inlet adapter and the compressible conductor.
[0030] Figure 24 Shows Figure 22 Cross-sectional view of the port inlet adapter, housing, electronics and cable.
[0031] Figure 25 Shows Figure 22 The resilient pins of the port inlet adapter.
[0032] Figure 26 Shows Figure 22 Cross-sectional view of the port inlet adapter.
[0033] Figure 27 Shows Figure 22 Exploded view of the port inlet adapter.
[0034] Figure 28 Shows another modified port inlet adapter.
[0035] Figure 29 Shows Figure 28 Cross-sectional view of the port inlet adapter, housing, electronics and cable. Detailed Description
[0036] Refer to Figure 1, an integrated CMTS (e.g., an integrated Converged Cable Access Platform (CCAP)) 100 may include data 110 that is typically sent and received in the form of packetized data via the Internet (or other network). The integrated CMTS 100 may also receive downstream video 120 from an operator video aggregation system, typically in the form of packetized data. For example, broadcast video is typically obtained from a satellite delivery system and preprocessed for delivery to subscribers via a CCAP or a video headend system. The integrated CMTS 100 receives and processes the received data 110 and downstream video 120. The CMTS 130 may transmit downstream data 140 and downstream video 150 to a customer's cable modem and / or set-top box 160 via an RF distribution network, which may include other devices such as amplifiers and splitters. The CMTS 130 may receive upstream data 170 from a customer's cable modem and / or set-top box 160 via a network, which may include other devices such as amplifiers and splitters. The CMTS 130 may include multiple devices to implement its required functions.
[0037] Reference Figure 2, due to increased bandwidth requirements, limited facility space for integrating CMTS, and power consumption considerations, it may be desirable to include a Distributed Cable Modem Termination System (D-CMTS) 200 (e.g., a Distributed Converged Cable Access Platform (CCAP)). Generally, CMTS focuses on data services, while CCAP also includes broadcast video services. The D-CMTS 200 uses network-packetized data to distribute some of the functions of the I-CMTS 100 downstream to remote locations such as fiber nodes. An exemplary D-CMTS 200 may include a Remote PHY architecture, where the Remote PHY (R-PHY) is preferably an optical node device located at the junction of fiber optic and coaxial cables. Generally, the R-PHY typically includes the PHY layer of a part of the system. The D-CMTS 200 may include a D-CMTS 230 (e.g., a core), which includes data 210 that is typically sent and received in the form of packetized data via the Internet (or other network). The D-CMTS 200 may also receive downstream video 220 from an operator video aggregation system, typically in the form of packetized data. The D-CMTS 230 receives and processes the received data 210 and downstream video 220. The remote fiber node 280 preferably includes a Remote PHY device 290. The Remote PHY device 290 can transmit downstream data 240 and downstream video 250 to a customer's cable modem and / or set-top box 260 via a network that may include other devices such as amplifiers and splitters. The Remote PHY device 290 can receive upstream data 270 from a customer's cable modem and / or set-top box 260 via a network that may include other devices such as amplifiers and splitters. The Remote PHY device 290 may include multiple devices to achieve its required functions. The Remote PHY device 290 mainly includes circuits related to the PHY, such as a downstream QAM modulator, an upstream QAM demodulator, and pseudowire logic that uses network-packetized data to connect to the D-CMTS 230. The Remote PHY device 290 and the D-CMTS 230 may include data and / or video interconnections, such as downstream data, downstream video, and upstream data 295. It should be noted that in some embodiments, video traffic may reach the remote physical device directly, bypassing the D-CMTS 230. In some cases, Remote PHY and / or Remote MAC PHY functions may be provided at the headend.
[0038] For example, the Remote PHY device 290 can convert downstream DOCSIS (i.e., Cable Data Service Interface Specification) data received from the D-CMTS 230 (e.g., DOCSIS 1.0, 1.1, 2.0, 3.0, 3.1, and 4.0, each of which is incorporated herein by reference in its entirety), video data, and out-of-band signals into analog for transmission via an RF or analog optical system. For example, the Remote PHY device 290 can convert upstream DOCSIS and out-of-band signals received from an analog medium such as an RF or linear optical system into digital for transmission to the D-CMTS 230. It can be observed that depending on the specific configuration, the R-PHY can move all or part of the DOCSIS MAC and / or PHY layer down to the fiber node.
[0039] The cable network includes line extenders and bridges and other components that filter and / or amplify signals sent to customer premise equipment and signals from customer premise equipment to the headend. The traditional frequency ranges supported by such components go up to 1.2 GHz frequency. For example, it typically supports frequency ranges of 5 to 42 MHz in the upstream direction and 54 to 1218 MHz in the downstream direction, 5 to 65 MHz in the upstream direction and 85 to 1218 MHz in the downstream direction, 5 to 85 MHz in the upstream direction and 102 to 1218 MHz in the downstream direction, and 5 to 204 MHz in the upstream direction and 258 to 1218 MHz in the downstream direction. In this way, the components selectively filter and amplify signals in the respective directions.
[0040] Reference Figure 3 , a diagram of a MiniBridger 300 (i.e., a bridge) is shown. The MiniBridger 300 is a one-to-many configuration that provides multiple filters to amplify signals. The MiniBridger 300 includes a solid housing 310 that is conductive and interconnected to the network cable. The MiniBridger 300 includes a power supply 320 attached to one half of the housing 310, and electronics 330 are attached to the other half of the housing 310. The electronics 330 are included in a removable and engagable tray 340 that can be removed from the housing 310. Also reference Figure 4 , a group of one or more coaxial cables (e.g., four cables through respective ports) are interconnected to the MiniBridger 300. Also reference Figure 5 and Figure 6 , the cables are inserted through corresponding openings 350 in the housing and fixed to corresponding adapters 360 fixed within the housing 310. Also reference Figure 6 , the tray 340 of the electronics 330 can include a corresponding set of connectors 368 that detachably engage with the adapters 360.
[0041] Reference Figure 7 andFigure 8 , the adapter 360 is fixed to the housing by screwing a pair of screws 370 into the threaded mounting member 380. In this way, the adapter 360 is fixed to the housing in a manner that also inhibits rotation. Also refer to Figure 9 and Figure 10 , the adapter 360 includes a center conductor that engages with the connector 368.
[0042] Further refer to Figure 11 , the adapter 360 receives the center "pin" conductor of the cable within a rectangular enclosure 400. The center "pin" conductor is fixed in place with a conductive threaded screw 410. The center "pin" conductor is crimped to a conductive flexible metal member 420 that forms a conductive path to the center pin 422 of the connector. The sheath of the coaxial cable that provides the ground reference potential is fixed to the housing 310, and the housing also provides the ground reference potential. The housing 310 is electrically interconnected to the threaded mounting member 380, which is electrically interconnected to the screw 370, which is electrically interconnected to the outer portion of the connector that includes the center pin. In this way, the ground potential is provided to the electronic device from the sheath of the cable through the corresponding portions of the housing.
[0043] Refer to Figure 12 , a resulting port entry structure is shown, which shows the signal path and the ground path between the coaxial cable and the electronic device enclosed therein.
[0044] Refer to Figure 13 , an illustration of a line extender 600 is shown. The line extender 600 is a 1-to-1 configuration that provides filtered amplified signals. The line extender 600 includes a solid housing 610, which is conductive and interconnected to the network cable. The line extender 600 includes a power supply 620 attached to one half of the housing 610 and electronic devices 630 attached to the other half of the housing 610. The electronic devices 630 are included in a removable and engagable tray 640 that is removable from the housing 610. Also refer to Figure 14 , a set of two coaxial cables are interconnected to the line extender 600 through corresponding ports. Also refer to Figure 15 and Figure 16 , the cables are inserted through corresponding openings 650 in the housing and fixed to corresponding adapters 660 fixed within the housing 610. Also refer to Figure 6 , the tray 640 of the electronic devices 630 may include a corresponding set of connectors 668 that detachably engage with the adapters 660.
[0045] Refer to Figure 17 and Figure 18 , the adapter 660 is fixed to the housing by screwing a pair of screws 670 into the threaded mounting member 680. In this way, the adapter 660 is fixed to the housing in a manner that also inhibits rotation. Also refer to Figure 19and Figure 20 The adapter 660 includes a center conductor that engages the connector 668.
[0046] Further referring to Figure 21 The adapter 660 receives the center "pin" conductor of the cable within a rectangular housing 700. The center "pin" conductor is secured in place with a conductive threaded screw 710. The center "pin" conductor is crimped to a conductive flexible metal member 720 that forms an electrical path to the center pin 722 of the connector. The jacket of the coaxial cable that provides a ground reference potential is secured to the housing 610, which also provides the housing as a ground reference potential. The housing 610 is electrically interconnected to a threaded mount 680, which is electrically interconnected to a screw 670, which is electrically interconnected to an outer portion of the connector that includes the center pin. In this manner, the ground potential is provided from the jacket of the cable through the corresponding portions of the housing to the electronic device.
[0047] The resulting port entry structure is shown, which shows the signal path and the ground path between the coaxial cable and the electronic device enclosed therein.
[0048] As the data-carrying capacity of DOCSIS-based networks increases over time, the frequencies used to carry data increase, such as higher frequencies from 1.2 GHz to 1.8 GHz, and for example higher frequencies from 1.2 GHz to 3.0 GHz. With this increase in frequency to support the increasing data-carrying capacity, it is determined that the physical cable has the capacity to carry such data with sufficient signal integrity, and that the electronic devices included within the housing also have the capacity to carry such data with sufficient signal integrity. However, it is determined that the port entry adapter that engages the housing to interconnect the cable and the electronic device includes characteristics that inhibit its ability to effectively carry data at this increased frequency.
[0049] Referring to Figure 22 The modified port entry adapter 1000 includes an elongated dielectric tube 1010 that includes an expanded terminal portion 1012. The dimensions of the elongated tube 1010, including its expanded portion 1012, are sized to fit within a circular opening of an existing housing (such as Figure 5 and Figure 15within those shown in []. Generally, the dimensions of the expansion portion 1012 are set to engage with the inner wall of the circular opening of the existing housing, while most of the elongated tube 1010 remains spaced offset from the wall of the circular opening, with an air gap therebetween. In particular, it is desirable that the dimensions of the elongated tube 1010 be set to fit within the circular opening and be positioned within the circular opening from the inside of the existing housing. In this way, if the enclosure already has a coaxial cable connected thereto, with the central "pin" core extending within the housing, the elongated tube 1010 can be placed from the inside of the housing above the central core of the coaxial cable. In this way, if the enclosure does not yet have a coaxial cable connected to it and thus no central "pin" core extending within the housing, the elongated tube 1010 can be positioned within the circular opening from the inside or outside of the housing depending on convenience. The tubular opening defined by the elongated tube 1010 is preferably slightly larger than the size of the central "pin" core of the coaxial cable, such that the central "pin" core remains in the desired position and is not significantly displaced due to vibrations imparted to the housing.
[0050] The port entry adapter 1000 may define a lip 1020 projecting from the face 1022 of the modified port entry adapter 1000. Also refer to Figure 23 , to provide an improved electrical interconnection between the port entry adapter 1000 and the housing, a compressible conductive material 1030, such as a conductive mesh, may be included. In the case where the port entry adapter 1000 is in a crimped engagement with the housing, the compressible conductive material 1030 conforms to the two surfaces and provides an interconnection that is not significantly impaired by aging, vibration, movement, or other reasons. Preferably, the compressible conductive material 1030 is interconnected to the face 1022 by glue or other adhesive material. The outer sheath of the coaxial cable has a ground reference potential, which is terminated at the outside of the conductive housing, and the outside of the conductive housing thus also has a ground reference potential. There is a short circuit path through the housing to the compressible conductive material 1030, and the compressible conductive material thus also has a ground reference potential. Then, the compressible conductive material 1030 is electrically interconnected to the port entry adapter 1000, which is a conductive member and / or the lip portion is a conductive member and / or other electrical structures are conductive members, and the conductive members provide a ground reference potential along the electrical signal path within the port entry adapter 1000.
[0051] Also refer to Figure 24 , a circular conductive press-fit retaining structure 1040 is included within the port entry adapter 1000. The dimensions of the press-fit retaining structure 1040 are set to receive the central "pin" core 1050 of the coaxial cable, such that a secure electrical interconnection can be made without creating integrity issues associated with screw fastening mechanisms. Also refer to Figure 25, the press - fit retention structure 1040 can include one or more electro - elastic pins 1042 that engage the central “stinger” core 1050 of the coaxial cable. The elongate tube 1010 preferably includes an internal flange 1014 that forms a weather - tight seal against the internal structure of the port - entry adapter 1000.
[0052] Reference Figure 26 , a cross - sectional view of the port - entry adapter 1000 is shown.
[0053] Reference Figure 27 , an exploded view of the port - entry adapter 1000 is shown. It should be noted that the horizontal elongate dielectric tube and the vertical conductor of the connector are preferably substantially 90 degrees relative to each other.
[0054] The port - entry adapter 1000 can include a vertical press - fit connector 1060. The vertical press - fit connector 1060 includes a circular outer conductor 1062 and an internal central conductor 1064. The electronic devices within the enclosure include corresponding connectors that press - fit within the vertical press - fit connector.
[0055] The port - entry adapter 1000 includes a pair of spaced - apart screw supports 1070, 1072 that define an opening therebetween. A pair of screws can engage the screw supports 1070, 1072 to engage a pair of matching threaded openings defined by the housing (e.g., Figure 5 and Figure 15 those shown in). By including a pair of spaced - apart screw openings with spaced - apart screws, the port - entry adapter 1000 is adapted to be inhibited from rotational movement.
[0056] The impedance of the coaxial cable is preferably 75 ohms, with a preferred range of 70 ohms to 80 ohms. In this way, the coaxial cable provides a controlled - impedance structure preferably in the range of 40 MHz to 1.8 GHz or in the range of 40 MHz to 3.0 GHz.
[0057] The impedance of the receiving portion of the electronic device is preferably 75 ohms, with a preferred range of 65 ohms to 85 ohms. In this way, the receiving portion of the electronic device provides a controlled - impedance structure preferably in the range of 40 MHz to 1.8 GHz or in the range of 40 MHz to 3.0 GHz.
[0058] The impedance of the port - entry adapter 1000 is preferably 75 ohms, with a preferred range of 55 ohms to 95 ohms, and more preferably in the range of 65 ohms to 85 ohms. In this way, the port - entry adapter 1000 provides a controlled - impedance structure preferably in the range of 40 MHz to 1.8 GHz or in the range of 40 MHz to 3.0 GHz.
[0059] The port inlet adapter 1000 having a ground path that is generally aligned with the signal path from the coaxial cable through the port to the electronic device therein facilitates an improved controlled impedance path, which in turn results in an improvement in the frequency response characteristics of the port inlet adapter 1000.
[0060] Reference Figure 28 and Figure 29 , another modified port inlet adapter 1000 includes an elongate tube and a press-fit retention structure.
[0061] In addition, each functional block or various features in each of the foregoing embodiments may be implemented or performed by a circuit, which is typically an integrated circuit or a plurality of integrated circuits. A circuit designed to perform the functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application specific or general-purpose integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, or discrete hardware components or a combination thereof. The general-purpose processor may be a microprocessor, or alternatively, the processor may be a conventional processor, a controller, a microcontroller, or a state machine. The foregoing general-purpose processor or each circuit may be configured by digital circuitry or may be configured by analog circuitry. Further, when technologies for manufacturing integrated circuits that succeed current integrated circuits emerge due to advancements in semiconductor technology, integrated circuits manufactured using such technologies can also be used.
[0062] It should be understood that the present invention is not limited to the specific embodiments that have been described, and that variations may be made therein without departing from the scope of the invention as defined in the appended claims, the scope of the invention being interpreted in accordance with the principles of prevailing law, including the doctrine of equivalents or any other principle that extends the enforceable scope of the claims beyond their literal scope. Unless the context otherwise indicates, a reference in a claim to an instance number of an element, whether a reference to one instance or more than one instance, requires at least the specified instance number of the element, but is not intended to exclude from the scope of the claim a structure or method having more instances of that element than specified. When used in a claim, the word "comprising" or its derivatives is used in a non-exclusive sense, the non-exclusive sense not being intended to exclude the presence of other elements or steps in the claimed structure or method.
Claims
1. A port entry adapter, comprising: (a) The port inlet adapter includes an elongated dielectric housing that is oriented in a horizontal orientation and sized to have an opening defined therein to engage a horizontally oriented conductor of a coaxial cable extending through the housing; (b) The port inlet adapter includes a compressible conductive member oriented in the horizontal orientation on a face of the port inlet adapter, the compressible conductive member being positioned such that when the elongated dielectric housing engages the horizontally oriented conductor of the coaxial cable extending through the housing, the compressible conductive member makes a compression electrical interconnection with an inner surface of the housing; (c) The port inlet adapter includes a conductive press-fit retaining structure adapted to engage the horizontally oriented conductor of the coaxial cable extending through the housing; (d) The port inlet adapter includes a vertically oriented connector that includes a conductive tubular member and a central conductive member located at a central position of the conductive tubular member; (e) The horizontally oriented elongated dielectric housing is oriented at an angle of substantially 90 degrees relative to the vertically oriented connector; (f) The vertically oriented connector is a press-fit connector configured to make an electrical connection with electronic devices included within the housing; (g) The port inlet adapter is configured to provide a controlled impedance structure between 55 ohms and 95 ohms between a signal path and a ground reference potential in the range of 40 MHz to 1.8 GHz.
2. The port entry adapter according to claim 1, wherein the elongated dielectric housing includes a first expanded terminal portion.
3. The port entry adapter according to claim 1, wherein the elongated dielectric housing includes a central portion having an outer diameter smaller than the outer diameter of the expanded terminal portion.
4. The port entry adapter according to claim 1, further comprising a protruding lip that engages the compressible conductive member.
5. The port entry adapter according to claim 1, further comprising the voltage - mating retention structure, the voltage - mating retention structure further including a conductive elastomeric conductive member that engages the horizontally - oriented conductor of the coaxial cable extending through the housing.
6. The port entry adapter according to claim 1, further comprising a central axis of the horizontally - oriented elongated dielectric housing that is aligned with the central conductive member.
7. The port entry adapter according to claim 1, the port entry adapter defining a pair of spaced - apart openings that are adapted to receive a pair of screws therethrough for securing the port entry adapter to the enclosure.
8. The port entry adapter according to claim 1, wherein the elongated dielectric housing includes a second expanded terminal portion having a diameter larger than the first expanded terminal portion.
9. The port entry adapter according to claim 1, wherein the port entry adapter is configured to provide the controlled impedance structure between the signal path and the ground reference potential in the range of 65 ohms to 85 ohms in the range of 40 MHz to 1.8 GHz.
10. The port entry adapter according to claim 1, wherein the port entry adapter is configured to provide the controlled impedance structure between the signal path and the ground reference potential in the range of 65 ohms to 85 ohms in the range of 40 MHz to 3.0 GHz.
11. The port inlet adapter according to claim 1, wherein the port inlet adapter is configured to provide the controlled impedance structure between 55 ohms and 95 ohms between the signal path and the ground reference potential in the range of 40 MHz to 3.0 GHz.