Abstract
The use of lumped elements in microwave monolithic circuits (MMICs) is an essential feature allowing substantial reduction of GaAs substrate and reduced area cost when compared with conventional distributed microwave designs. The development of low loss passive circuit elements is therefore critical for the realisation of space conservative and efficient monolithic circuits.
This paper discusses the properties of a series of lumped element designs that exhibit the same functional behaviour as the distributed quarter-wavelength quadrature branchline coupler and presents a set of closed equations for their design.
This paper discusses the properties of a series of lumped element designs that exhibit the same functional behaviour as the distributed quarter-wavelength quadrature branchline coupler and presents a set of closed equations for their design.
| Original language | English |
|---|---|
| Pages (from-to) | 19-23 |
| Number of pages | 5 |
| Journal | Microwave and Optical Technology Letters |
| Volume | 2 |
| Issue number | 1 |
| Publication status | Published - Jan 1989 |