Compact reflective microstrip phase shifter for traveling wave antenna applications

被引：23
|
作者：
Cheng, Shi [1 ]
Ojefors, Erik
Hallbjorner, Paul
Rydberg, Anders
机构：
[1] Uppsala Univ, Dept Engn Sci, Signals & Syst Grp, SE-75120 Uppsala, Sweden
[2] Ericsson AB, Microwave & High Speed Elect Res Ctr, SE-43184 Molndal, Sweden
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2006年 / 16卷 / 07期
关键词：
branch line coupler; hybrid; reflective type phase shifter (RTPS); traveling wave antenna; varactor;
D O I：
10.1109/LMWC.2006.877126
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A varactor diode based microstrip phase shifter for 5.8 GHz is presented. It is designed for use in microstrip traveling Wave antennas where there is a strict limitation on the available space for the phase shifters. To meet all requirements, a reflective type phase shifter is chosen. Such a phase shifter includes a hybrid coupler. A compact branch line coupler is designed to make the phase shifter fit between the radiating elements in the antenna, while maintaining sufficient electrical performance. Phase shifters are designed with different types of stubs connecting the diodes to ground. A phase tuning range of 621 is measured for a phase shifter with parallel open stubs, and 92 degrees with shorted stubs. Insertion loss is in both cases less than 0.6 dB. A complete five-element array antenna is built and characterized. Measurements show beam scanning angles within 32 degrees from broadside.
引用
收藏
页码：431 / 433
页数：3
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