70-GHz-band MMIC transceiver with integrated antenna diversity system: application of receiver-module-arrayed self-heterodyne technique
70-GHz-band MMIC transceiver with integrated antenna diversity system: application of receiver-module-arrayed self-heterodyne technique
复制标题
具有集成天线分集系统的 70 GHz 频段 MMIC 收发器：接收器模块阵列自外差技术的应用
DOI：
--
复制
发表时间：
2004
影响因子：
4.3
通讯作者：
H. Ogawa
中科院分区：
文献类型：
--
作者：
Y. Shoji;H. Ogawa
我们提出的毫米波自外差传输技术是一个简单和成本效益的解决方案，在毫米波接入系统的频率稳定性问题。此外，该技术使得能够将高灵敏度接收机与组合天线分集系统集成，该组合天线分集系统对于信号到达的所有方向近似地与最大比组合天线分集系统一样有效。我们解释了我们新开发的70 GHz频段收发器如何使用毫米波自外差传输技术和接收器模块阵列来大大提高信号到达各个方向的接收器灵敏度，即，而不影响信号接收波束图以及这如何解决多径信号传播环境中的信号衰落问题。我们还从理论上证明，接收器的灵敏度提高成比例的接收器模块阵列中的元素的数量，并通过实验证实这一点，使用实验70 GHz波段单片微波集成电路收发器与4/SPL倍/2接收器模块阵列。我们表明，毫米波信号传播可以使用双路径模型建模，严重的信号衰落取决于收发器的高度和传输距离。使用我们开发的收发器的载波和调制信号传输实验表明，使用接收器模块阵列大大减少了多径信号传播环境中的信号衰落问题。在信号传输实验中，我们成功地传输了一个正交频分复用信号在4米的传输距离与比特错误的性能。
Our proposed millimeter-wave self-heterodyne transmission technique is a simple and cost-effective solution to frequency stability problems in millimeter-wave access systems. In addition, this technique enables integration of a high-sensitivity receiver with a combining antenna diversity system that is approximately as effective as a maximal-ratio-combining antenna diversity system for all directions of signal arrival. We explain how our newly developed 70-GHz-band transceiver using the millimeter-wave self-heterodyne transmission technique with a receiver-module array can greatly improve receiver sensitivity for all directions of signal arrival i.e., without affecting the signal reception beam pattern and how this can solve the signal-fading problem in a multipath signal propagation environment. We also theoretically demonstrate that receiver sensitivity improves in proportion to the number of elements in a receiver-module array, and experimentally confirm this using an experimental 70-GHz-band monolithic microwave integrated circuit transceiver with a 4/spl times/2 receiver-module array. We show that millimeter-wave signal propagation can be modeled using a two-path model, and that serious signal fading depends on the transceiver height and transmission distance. Carrier and modulated signal transmission experiments using our developed transceiver have revealed that use of a receiver-module array greatly reduces the signal-fading problem in a multipath signal propagation environment. In the signal transmission experiment, we succeeded in transmitting an orthogonal frequency-division multiplexing signal over a 4-m transmission distance with bit-error-free performance.