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n in herbalism, the property of tonic herbs that allows them to maintain balance by eliciting a response in opposite directions depending on the needs of the individual taking them. See also adaptogen and tonic herbs.
References in periodicals archive ?
Based on the bidirectional Yagi antenna mentioned in the last section, we propose a stacked bidirectional antenna in this section.
The proposed bidirectional antenna combines the coupling feed driver and stacked director array, as shown in Figure 5.
Besides, these radiation pattern figures show a highly concentrated bidirectional beam pattern.
The performance of the proposed bidirectional antenna is also compared with some previous directional antennas, as shown in Table 1.