JP-7857054-B2 - Dual-band plastic waveguide transmission system

Inventors

• ソン，ハ イル
• ウォン，ヒョ ソップ
• ユ，ジュン ヨン
• クォン，コン アン
• イム，キュ ヒョン
• チェ，ハン ホ
• クォン，ウ ヒョン

Assignees

• ポイント２ テクノロジー，インコーポレイテッド

Dates

Publication Date

20260512

Application Date

20231027

Priority Date

20221027

Claims (9)

1. RF communication system, An RF receiver configured to receive a first signal and a second signal transmitted from an RF transmitter at a first carrier frequency and a second carrier frequency higher than the first carrier frequency, respectively . A plastic waveguide device configured to provide a communication channel between the RF transmitter and the RF receiver and to transmit the first signal and the second signal , The interconnection device includes a first microstrip-to-waveguide transition (MWT) configured to transmit the first signal from the plastic waveguide device to the RF receiver, and a second MWT configured to transmit the second signal from the plastic waveguide device to the RF receiver, The frequency bandwidth of the first signal is adjusted by adjusting the lower cutoff frequency with the plastic waveguide device and adjusting the upper cutoff frequency with the first MWT so that the first signal is received as an upper sideband signal. An RF communication system in which the frequency bandwidth of the second signal is adjusted by adjusting the upper cutoff frequency with the plastic waveguide and adjusting the lower cutoff frequency with the second MWT, such that the second signal is received as a lower sideband signal.
2. The RF communication system according to claim 1, further comprising a duplexer connected to the first MWT and the second MWT, respectively, for transmitting the first signal and the second signal from the plastic waveguide device.
3. The plastic waveguide device includes a dielectric tube having a rectangular cross-section, The RF communication system according to claim 1 , wherein the lower cutoff frequency of the first signal and the upper cutoff frequency of the second signal are adjusted based on the lateral and longitudinal lengths of the cross-section of the dielectric tube.
4. The first MWT and the second MWT are, The RF communication system according to claim 1 , comprising: a probe element for receiving signals from a feeding line; and a slotted ground plane for allowing signals radiated from the probe element to pass through and be transmitted to the plastic waveguide device.
5. The upper cutoff frequency of the first signal is adjusted based on the length of the probe element of the first MWT and the slot size of the slotted ground plane of the first MWT. The RF communication system according to claim 4 , wherein the lower cutoff frequency of the second signal is adjusted based on the length of the probe element of the second MWT and the slot size of the slotted ground plane of the second MWT.
6. The RF receiver is The system is further configured to receive a third signal and a fourth signal transmitted from the RF transmitter at a third carrier frequency lower than the first carrier frequency and a fourth carrier frequency higher than the second carrier frequency, respectively. The aforementioned interconnection device is A third MWT configured to transmit the third signal from the plastic waveguide device to the RF receiver; and a fourth MWT configured to transmit the fourth signal from the plastic waveguide device to the RF receiver, The RF communication system according to claim 1, wherein the frequency bandwidth of the third signal is adjusted by the plastic waveguide and the third MWT so that the third signal is received as an upper sideband signal, and the frequency bandwidth of the fourth signal is adjusted by the plastic waveguide and the fourth MWT so that the fourth signal is received as a lower sideband signal.
7. The RF communication system according to claim 6 , further comprising a quadplexer for transmitting the first signal, the second signal, the third signal, and the fourth signal from the plastic waveguide device.
8. The RF communication system according to claim 6, wherein the frequency bandwidth of the third signal is adjusted by adjusting the lower cutoff frequency using the plastic waveguide device , and the frequency bandwidth of the fourth signal is adjusted by adjusting the upper cutoff frequency using the plastic waveguide device.
9. The RF communication system according to claim 6, wherein the frequency bandwidth of the third signal is adjusted by adjusting the upper cutoff frequency with the third MWT, and the frequency bandwidth of the fourth signal is adjusted by adjusting the lower cutoff frequency with the fourth MWT.

Description

This disclosure relates to waveguide links, and more specifically, to dual-band plastic waveguide transmission systems. The demand for even larger input/output (I/O) bandwidth in data sensors is increasing due to the explosive growth of network traffic. However, conventional high-speed interconnects face functional and economic challenges. Copper-to-substrate electrical links exhibit critical bandwidth limitations caused by skin loss. Optical links require chip-to-fiber assembly and considerable equipment costs for E/O (electrical/optical) and O/E conversion devices in short-reach, high-capacity links. Recent research suggests that plastic waveguide links, exhibiting inherently low-loss and wideband channel characteristics, could be a promising solution for providing power- and cost-effective high-speed interconnects, addressing the shortcomings of conventional high-speed interconnects. This necessitates the development of transmission systems that enable ultra-high-speed data transmission through plastic waveguide links. This is an illustrative diagram showing single-sided band transmission. This is an illustrative drawing showing a dual-band plastic waveguide transmission system according to one embodiment of the present disclosure. This is an exemplary diagram showing the lower and upper cutoff frequencies of the plastic waveguide channel response. This is an illustrative drawing showing the configuration of a plastic waveguide device according to one embodiment of the contents of this disclosure. This is an illustrative drawing showing a cross-sectional view of a package substrate including MWT according to one embodiment of the contents of this disclosure. This is an illustrative drawing showing the slotted ground plane in the A-A' plane of Figure 5. This is an illustrative diagram showing a probe element located in the B-B' plane of Figure 5. This is an illustrative drawing showing a multiband plastic waveguide transmission system according to one embodiment of the contents of this disclosure. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, please note that when assigning reference numerals to the components in each drawing, the same component will be given the same reference numeral whenever possible, even if it appears in other drawings. Furthermore, in describing the present invention, if a specific explanation of a related known configuration or function is deemed likely to obscure the gist of the invention, such detailed explanation will be omitted. The various aspects of this invention are described below. It should be understood that the invention presented herein can be embodied in various forms, and any specific structure, function, or all thereof presented herein are merely illustrative. A person with ordinary skill in the art to which this invention belongs will understand that one aspect presented herein can be embodied independently of any other aspect, and that two or more such aspects can be combined in various ways. For example, an apparatus can be embodied or a method can be implemented using any number of aspects described herein. Furthermore, such an apparatus can be embodied or a method can be implemented using, in addition to, or instead of, one or more aspects described herein, other structures, functions, or structures and functions. The radio frequency (RF) communication system described herein can be configured to communicate between an RF transmitter and an RF receiver via a plastic waveguide link exhibiting low-loss and wideband channel characteristics. Such a system can also improve transmission speed by enabling the simultaneous transmission and reception of two or more RF signals in dual-band or multi-band configurations through the plastic waveguide in their respective bandwidths. Furthermore, such a system can implement single-sideband transmission by adjusting the cutoff frequency bandwidth of each RF signal, thereby further improving transmission speed by enabling twice the data rate compared to double-sideband transmission. Figure 1 is an illustrative diagram showing single-sideband transmission. This disclosure allows for the application of single-sideband transmission, as illustrated in Figure 1, to achieve twice the data rate compared to double-sideband transmission. In one embodiment, this disclosure allows for adjustment of the slope of the signal's upper cutoff frequency band, thereby suppressing the upper sideband signal and providing the receiver with a transmission signal centered on the lower sideband, by causing the link frequency characteristics to roll off sharply at the upper cutoff frequency (i.e., to exhibit a high rolloff). In another embodiment, this disclosure allows for adjustment of the slope of the lower cutoff frequency band, thereby suppressing the lower sideband signal and providing the receiver with a transmission signal centered on the upper sideband