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南京愛立信熊貓通信公司使用AWR軟件，使得LTCC尺寸減少了80%

2013-06-27 來源：微波射頻網 我要評論(0) 字號：大 中 小

南京愛立信熊貓通信有限公司(NEPCC)，亞洲最大的移動通信基站和系統設備制造商，使用AWR軟件設計了一種新穎的多節堆疊式耦合器。NEPCC 的項目組長Nick Zhou,使用AWR的Microwave Office®電路設計軟件結合AXIEM®平面電磁仿真來開發一個創新的垂直堆疊的多段結構，得以提高產品性能和降低設備尺寸。

Nick Zhou表示：“應用AWR軟件，我們能夠對LTCC耦合器進行設計和優化，帶寬提高40%，體積減少80%。AWR的仿真結果與實測結果符合的非常好，當地工程師們的支持非常優秀。”

Nanjing Ericsson Panda Communications Reduces LTCC Footprint By 80 Percent Thanks To AWR Software

Customer Background

Nanjing Ericsson Panda Communication Co., Ltd. is a joint venture company established by Nanjing Panda Electronics Company Ltd., Ericsson Sweden, Ericsson (China ) Co., Ltd., China Putian Information Industry Group Co., Ltd., and Yung Shing Enterprise, Hong Kong, to manufacture high-technology communications system products, including the design, production, sales, and installation of GSM/CDMA digital mobile communication systems and switches. Incorporated in 1992, the company has become the largest manufacturing base of mobile communication base stations and system equipment and is rapidly becoming the largest system supply center for Ericsson in the Asia-Pacific region.

The Design Challenge

The quadrature hybrid (or branch-line coupler), is a key component found within microwave circuits such as balanced amplifiers, balanced mixers, phase shifters, and beam-forming networks for array antennas. The conventional approach for a single section quadrature hybrid with 20dB return loss is limited to 10 percent bandwidth. While a broader bandwidth can be achieved using coupled lines, coupled line hybrids are difficult to implement on MMICs. Looking instead at branch line hybrids, the bandwidth can be increased greatly by using stepped multi-section impedance transformers and cascading the multi-sections, however, the increase to the size of the MMIC is a deterrent. Therefore, the challenge for the NEPCC design team was to develop a novel approach for a quadrature hybrid that would not only decrease the size of the MMIC but also improve the performance bandwidth.

The Solution

Nick Zhou, lead AWR user at NEPCC, used AWR’s Microwave Office® circuit design software combined with AXIEM® planar EM simulation to design a novel low temperature co-fired ceramic (LTCC) quadrature hybrid device using a stacked multi-section structure based on a Ferro-A6 substrate. A bandwidth of 40 percent larger than conventional devices and a size reduction of 80 percent were achieved using a vertical stacked structure instead of the traditional cascaded method. The main advantages of this novel approach are miniaturized size and low interference.

Due to the large number of parameters, the optimization and verification would have been very time-consuming if simulated using only traditional FEM-based simulators. Because Microwave Office and AXIEM are closely integrated within the AWR Design Environment™ and share the same schematic/layout, Nick was able to combine the circuit-based simulator and EM-based simulator, which significantly enhanced his optimization efficiency as well as accuracy. In addition, there was no need to manually re-draw the layout, which saved even more time. The final simulated results versus measurements agreed very well and the design team was extremely pleased with the success of this difficult challenge.

Nick found AWR software to be easy to install, fast to learn, and very user friendly. He also appreciated the fast, proficient, and dedicated support by AWR’s local application engineers.

請點擊下列鏈接了解完整的成功案例http://www.awrcorp.com/customer-stories/nanjing-ericsson-panda-communication-co-ltd

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