Adobe® Reader® Download
The files are in Adobe Acrobat Format.
To view them you will need to download the Acrobat Reader.
The files are in Adobe Acrobat Format.
To view them you will need to download the Acrobat Reader.
2001 News Release
June 6 
June 6, 2001
Hitachi Metals Develops World's Smallest Antenna Switch Module
Tokyo, Japan, June 6, 2001-Hitachi Metals, Ltd., is pleased to announce the development of an antenna switch module of size 5440 (mounting dimensions 5.4mm x 4.0mm), the first of its kind in the industry.
1. Background
In recent years, advances made in the mobile phone market have been remarkable, with numerous frequency systems being employed worldwide. The most widely used system is the European Standard system, GSM (Global System for Mobile Communication). Services for this system are being offered in the 900MHz and 1800MHz frequency bands, and cellular phones with dual band capability are being used in the countries using this system. Increasingly compact cellular phones require higher-performance parts that fit in a reduced mounting area.2. Development Background
Hitachi Metals already mass-produces an antenna switch module of size 6750 (mounting dimensions 6.7mm x 5.0mm). This antenna switch module integrates a diplexer, two antenna switches, and two low-pass filters into a single module, enabling a drastic reduction in size.Responding to demands for more compact antenna switch modules, we have drawn on our vast reserves of design know-how and devised a circuit pattern that achieves a higher level of integration. We have worked on the development of miniature antenna switch modules using low-temperature co-fired ceramics (LTCC) and fine thick-film printing technology that were developed in-house.
As a result, we have succeeded in creating a high-performance miniature antenna switch module of size 5440, realizing a 35% reduction in mounting area compared with current modules.
We applied the Land Grid Array (LGA) package type to reduce the mounting area and improved receiver-side insertion loss to raise the performance of the built-in antenna.
*Note: The LGA means that the pads of terminals are attached only on the underside of the component.
3. Features
| (1) | Small size: | 5.4mm x 4.0mm x 1.8mm |
| (2) | Small mounting area: | LGA applied to the mounting pad TX (transmitter-side): 1.1dB typ. (1.3dB max.) at 900MHz 1.2dB typ. (1.5dB max.) at 1800MHz |
| (3) | Low insertion loss: | RX (receiver-side): 0.6dB typ. (0.85dB max.) at 900MHz 0.8dB typ. (1.0dB max.) at 1800MHz |
| (5) | High attenuation: | 30dB typ. (25dB min.) at 2fo and 3fo. |
4. Applications
Radio Frequency (RF) TX-RX switch, which conforms to the European Standard GSM dual band system5. Specifications
| a) Model name: | SHS-M090B | ||
| b) System application: | EGSM900/GSM1800 | ||
| c) Frequency range: | 880-960MHz, 1710-1880MHz | ||
| d) Small size: | 5.4mm x 4.0mm x 1.8mm | ||
6. Patents
Domestic: 15 patents filedForeign: 1 patent filed
7. Sales
Samples currently available, mass production scheduled from July
2001 1,000,000 pcs/month 8. Manufacturing and Marketing
- Manufactured by: Tottori Works (Tottori Prefecture, Japan)
- Marketed by: Electronic Materials Company
For further information, contact:
| Hitachi Metals, Ltd. Electronic Materials Company, Officer in charge: Mr. Takeda. Tel:+81-3-5765-4425 Hitachi Metals, Ltd. Corporate Communications Group Officers in charge: Mr. Shoji and Mr. Masuoka. Tel: +81-3-5765-4079 |
