A MMIC doubler based on novel open/short stub hybrids

Yu Ann Lai, Chih Ming Lin, Chun Chi Su, Chieh Pin Chang, Yeong Her Wang

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


A new configuration of a balanced frequency PHEMT monolithic microwave integrated circuit doubler using open/short stub hybrids is proposed. With multi-coupled lines technology, the phase shifter is produced and applied to a Ka-band doubler successfully. As compared to the conventional lumped-element doubler, this phase shifter can make the doubler more compact in size and flexible in design. The doubler achieves an operation band width of 23 to 26 GHz with the best conversion loss of 7.4 dB at 25 GHz. In addition, the fundamental frequency suppression is better than 24.1 dB, and the chip dimension is as small as 0.85 × 1.1 mm2.

Original languageEnglish
Article number4804620
Pages (from-to)242-244
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number4
Publication statusPublished - 2009 Apr

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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