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In this paper a broadband impedance matching network (equalizer) design algorithm has been proposed. In the equalizer a lossless unsymmetrical lattice network has been utilized. The branch impedances of the lattice network are considered as singly terminated lossless LC networks since it is not desired to dissipate power in the equalizer. After giving the algorithm its usage has been illustrated via an example. (C) 2011 Elsevier GmbH. All rights reserved.

In this paper, a novel broadband impedance matching network for Electro-Absorption Modulators (EAM) is proposed. With this matching network, RF reflection can be great suppressed in a wide frequency range up to 43GHz, along with a extended 3 dB bandwidth to 39.5GHz.

We present the design and implementation of a 5-6 GHz differential low noise amplifier (LNA) for WLAN applications. The LNA is fabricated in 0.25?m SiGe BiCMOS process from STMicroelectronics. By using on-chip transformers a broadband impedance matching (3.5-11 GHz), conversion between single-end and differential signals and smaller chip size are achieved. The LNA exhibits a small signal gain of 14.25 dB and a noise figure of 4.1 dB. It draws 13.3 mA from 1.8 V power supply and exhibits and CP1 of ?9 dBm. The chip size including pads is 0.68mm2.

In connecting a coupled-cavity circuit to a waveguide, it is often necessary to use transition cavities for broadband impedance matching. This paper describes numerical models to determine parameters of transition cavities. As an example of use of the proposed method, performance of a 35 GHz, 600 W coupled-cavity TWT (CCTWT) are compared with both computed and measured results.

A practical real frequency technique for broadband impedance matching is based on bilinear reflection behavior versus lumped and distributed element variables. An efficient grid search locates a likely-global solution so that a precise constrained gradient optimization can eliminate unnecessary elements in candidate networks.

The authors consider a compact broadband element useful in corporate-fed arrays and subarrays of series-fed elements designed as bandpass filters. In addition, two other areas are explored. The first is the application of filter theory to the broadband impedance matching of each element of a series-fed array. The second is the implementation of series-fed arrays of nonresonant microstrip patch radiators. >