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An electrically small meandered microstrip line antenna was investigated. The antenna was designed, fabricated and measured for an operating frequency of 2.4 GHz with a 10 dB return loss bandwidth of 2%. In order to improve the efficiency and gain, a truncated ground plane was used, and its effect on balancing the antenna currents has been studied. A Wheeler Cap was designed for the efficiency measurement...
An E-band transistor-based balanced frequency tripler is implemented using a 0.15 ??m GaAs mHEMT process which can be integrated into a single-chip RF front-end. The balanced configuration with 90?? hybrids at the input and output improves the port impedance matching which is measured to be better than 15 dB at the input and 10 dB at the output over the frequencies of interest. The tripler has a conversion...
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