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High Q inductors with maximum quality factors in the range of 180-60 have been obtained at frequencies in the 1-3 GHz band for inductances in the range of 1nH to 20nH using a low-temperature organic laminate build-up process. This is the first time such high Q inductors have been demonstrated in this technology. The different inductor designs, optimization schemes, and trade-offs between different topologies, have been discussed in this paper.

This paper presents for the first time the design, implementation, measurements and reliability data of multiple RF filters on Liquid Crystalline Polymer based substrates for different communication standards such as 802.11 a/b/g, LMDSMMDS, cellular and Bluetooth applications. The first examples of this platform substrate technology are very compact 12mm3 fully packaged SMT front-end filters with center frequencies of 2.45 and 5.775 GHz. One embodiment of the filter at 2.45 GHz, which is well suited for 802.11 blg and Bluetooth type applications, provides a passband of 100 MElz with maximum inband insertion loss less than 2dB at 25OC, greater than 25dB attenuation at 2700-2800 MHz, greater than lOdB attenuation below 2.2GHz, greater than 20dB rejection at the second and third harmonic and inband VSWR less than 1.5 matched to 50 Ohms at the input and output. Index Terms -Bandpass Filters, Chip-type component, embedded passives, lumped element microwave circuits resonators, multilayer organic (MLO), multilayer RF circuits, packaging, printed circuit board (PCB).

A fast and accurate layout-level synthesis and optimization technique for embedded passive RF components and circuits such as inductors and bandpass filters have been presented. The filters are composed of embedded inductors and capacitors in a multilayer liquid crystalline polymer substrate. The proposed approach is based on a combination of segmented lumped-circuit modeling, nonlinear mapping using polynomial functions, artificial neural network-based methods, and circuit-level optimization. Synthesis and optimization results of inductors for spiral/loop designs based on microstrip and stripline configuration are within 5% of data obtained from electromagnetic (EM) simulations. For RF circuits, the methodology has been verified through synthesis of 2.4-and 5.5-GHz bandpass filters with and without transmission zeros. Scalability has been shown over a range of 2-3 and 4-6 GHz, respectively, with bandwidth variation of 0.5%-3% of center frequency. The synthesized models are within 3%-5% of EM simulation data.Index Terms-Artificial neural networks (ANNs), filter synthesis, inductor optimization, liquid crystalline polymer (LCP), synthesis.

This paper presents for the first time the design, implementation, measurements, reliability data and integration of multiple RF components such as filters, baluns, diplexers, and a combination of the above on Liquid Crystalline Polymer (LCP) based substrates for communication standards such as 802.11 a/b/g, LMDWMMDS, sa1,ellitddigital TV, UWB, cellular and Bluetooth type applications.These components and process technologies are being targeted as a cost-effective high-performance, miniaturized alternative to the primary technologies of choice for multihand RF/wireless applications, namely, low-temperature co-fired ceramic (LTCC), multi-layer ceramic (MLC) and ceramic monoblock technologies.The first examples of this platform substrate technology are very compact 12"' fully packaged SMT 6ont-end filters with center frequencies of2.45, 5.25 and 5.775 GHz. One embodiment of the filter at 2.45 GHz, which is well suited for 802.11 b/g and Bluetooth type applications, provides a passband of 100 MHz with maximum inhand insertion loss less than 1.7dB at 2 5 T , greater than 25dB attenuation at 2700-2800 MHz, greater than lOdB attenuation below ;!.2GHz, greater than 20dB rejection at the second and third harmonic and inhand VSWR less than 1.5 matched to 50 Ohms at the input and output.