Table 3 Optimization results for Circuit II.

From: Direct constraint control for EM-based miniaturization of microwave passives

Optimization approach

Performance parameters

Design scenario I (F = [0.9 1.1] GHz)

Design scenario II (F = [0.95 1.05] GHz)

Method

Setup

Footprint area A (mm2)

Violation of constraint γ1 (dB)

Violation of constraint γ2 (dB)

Footprint area A (mm2)

Violation of constraint γ1 (dB)

Violation of constraint γ2 (dB)

Implicit constraint handling (penalty function approach)

β1 = 101, β2 = 101

124

0.01

16.8

114

0.00

16.6

β1 = 101, β2 = 102

104

0.02

17.0

90

0.00

17.6

β1 = 101, β2 = 103

464

0.27

3.2

439

0.21

2.9

β1 = 101, β2 = 104

508

0.17

− 0.1

364

− 0.09

0.2

β1 = 102, β2 = 101

593

0.04

− 3.4

593

0.04

− 5.2

β1 = 102, β2 = 102

593

0.04

− 3.4

593

0.04

− 5.2

β1 = 102, β2 = 103

538

0.07

− 1.9

593

0.04

− 5.2

β1 = 102, β2 = 104

593

0.04

− 3.4

593

0.04

− 5.2

β1 = 103, β2 = 101

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 103, β2 = 102

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 103, β2 = 103

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 103, β2 = 104

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 104, β2 = 101

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 104, β2 = 102

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 104, β2 = 103

595

0.04

− 3.4

595

0.04

− 5.2

β1 = 104, β2 = 104

595

0.04

− 3.4

595

0.04

− 5.2

Explicit constraint handling (this work)

510

0.00

0.1

363

− 0.03

0.4