This document provides updates to IEEE Std 802.16's MIB for the MAC, PHY and asso- ciated management procedures in order to accommodate recent extensions to the standard.

IEEE Standard for Local and Metropolitan Area Networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems Draft Amendment: Management Information Base Extensions

This paper discusses the design methodologies of a 340 GHz on-chip 3-D antenna. Firstly, a high-gain and high-radiation efficiency substrate integrated waveguide (SIW) cavity backed on-chip antenna is designed using a standard 0.13- $\mu{\hbox{m}}$ SiGe BiCMOS technology. Then, a low-permittivity supporter and a dielectric resonator (DR) are vertically stacked on the proposed on-chip antenna, forming a 3-D Yagi-like antenna to further enhance the gain and radiation efficiency. The measurements showed that the proposed antenna achieved a peak gain of ${\sim}$ 10 dBi and radiation efficiency of ${\sim}$ 80% at 340 GHz; the impedance bandwidth is ${\sim}$ 12% with the use of dielectric resonator antenna (DRA) and the Yagi-like structure. The antenna size is ${\sim} {\hbox{0.7}}\times {\hbox{0.7}}\ {\hbox{mm}}^{2}$ .

340 GHz On-Chip 3-D Antenna With 10 dBi Gain and 80% Radiation Efficiency

Radiation efficiency is one of the most difficult to measure quantities of antennas. Established methods are mostly either based on the Weehler-Cap-Method and limited to small antenna, or require a full 3D scan around he antenna under test. We present an alternative method for the measurement of antenna efficiency in the reverberation chamber. The measurement is based on an emission measurement method presented in [1]. Using this method, antenna efficiencies can be estimated along with the emission measurement of the equipment under test (EUT). This can help to reduce the uncertainty during radiated emission testing in the reverberation chamber. Of course, the method can also be used without an EUT present in the chamber to characterize the antenna only.

Yet another antenna efficiency measurement method in reverberation chambers

A novel compact dual-band electromagnetic band-gap (EBG) structure is proposed in this paper. The major contribution to this dual-band design is using cascaded mushroom-like units which operate at different frequencies. The position of via is moved off the center of the metal patch to get a lower resonant frequency and the effects of the radius of via are considered at the same time. The method of suspended microstrip is utilized to measure the band-gap characteristics of the EBG structures. Several dual-band EBG structures are designed and compared. Results show that this novel cascaded structure offers additional flexibility in controlling the frequencies of the stopband over a wide range. The cascaded dual- band EBG structure has potential application to dual-band antenna and circuit.

A Novel Design Approach for Dual-Band Electromagnetic Band-Gap Structure

This paper presents a novel method to enhance the pattern characteristics of the TEM horn antenna for 2−19 GHz frequency band. The conventional TEM horn antenna introduces some fluctuations in the main lobe radiation pattern over the center frequencies, which are 10−15 GHz. This motivated us to propose a new method to remove the aforementioned impact by carving an arc shape to the open end of exponentially tapered plates. The associated curvature of this arc is optimized to completely remove the aforementioned fluctuation. The simulation results show that the improved TEM horn antenna structure exhibits low VSWR as well as good radiation pattern over 2−19 GHz frequency band.

https://jpier.org/pier/pier90/08.08123106.pdf

Modified TEM horn antenna for wideband applications

This paper presents a practical and simple broadside coupled-line balun with multi-layers profile microstrip line and broadside coupling structure to enhance the coupled coefficient and balanced output bandwidth Designed broadside coupled-line balun design with a symmetric quarter wavelength coupled-line is developed to increase wider bandwidth efficiency and the return loss is better than the traditional planar marchancd coupled-lines balun The structure of the designed balun is fairly simple, practical and easily fabricated The measured results show good agreements with those analyses data

The Wideband Marchand Balun Transition Design

In this paper, facilities of antenna measurement have recently commissioned a spherical far-field measurement system The low profile far-field spherical scan system provides significant advantages over the older far-field testing including elimination of problem of simple theta (thetas) and phi (phi) rotary axis with indoor far-field range testing, complete measurement characterization of the antenna, and improved accuracy The mobile phone under test of far-field range testing has been the plan at the Cellular Telecommunications & Internet Association (CTIA) certification program test requirements for performing radiated power and receiver performance measurement This paper will discuss the antenna and wireless system integration tested with the TRP/TIS and spherical antenna measurement for far-field system The spherical far-field antenna system applied to total radiation efficiency, mean effective gain (EMG) and diversity gain measurement and applications

The 3D Far-Field Antenna Measurement Technology for Radiation Efficiency, Mean Effective Gain and Diversity Antenna Operation

In this paper suggestion FPC for antenna design not only easy to control the antenna pattern on desired direction and radiation magnitude but also effective and quickly solved the complex tuning parameters of antenna application. Flexible printer circuit (FPC) board serves planar wireless antenna design. Effectively to supersede the antenna based on the traditional fixed printer circuit board (PCB) implement, and then provide free dimension of antenna and wireless system integration to designer. This paper proposes a new antenna technique for FPC printed monopole antenna as a radiator. This branch lines FPC monopole antenna based on asymmetric meander lines with flexible structure exhibits good performances. Branch lines monopole radiator has the merits to improve antenna bandwidth with fine frequency tuning. The PDA phone for CDMA2000 cellular, PCS, BT/WiFi, and GPS applications is well demonstrated with the integration and measurement of the co-designed.

Flexible printed circuit board (FPC) antennas for mobile phone operation

In this paper, we propose a novel on-glass multi-band antenna with a planar inverter F structure for the GPS and WLAN wireless communication. A prototype of the proposed antenna with a compact size of 6mmiN25mm is experimented in the mobile handset design. The antenna shows operating bandwidths (referenced Return loss-6dB) for covering the GPS in 1.575GHz and WLAN in 2.45GHz. The present design mainly focuses on the current trends in the development of compact and low profile mobile handset. For reducing the dimension of the antenna area in the device, the proposed antenna is placed on the inner surface of the glass of the display. Moreover, the antenna design can be against to avoid the degradation in the user handheld condition. The simulated and measured data including return loss, antenna gain and radiation patterns are presented. As a result of the measurement, the antenna design is proper to the GPS and WIFI dual band application in the mobile handset.

A Novel On-Glass Antenna for Mobile Handset Applications

1. SPHERICAL ANTENNA MEASUREMENT In the US, the Certiflcation Program of the CTIA-The Wireless Association was the flrst organization to publish a test plan for Over-The-Air (OTA) testing of mobile terminals. During the last few years there has been signiflcant progress towards developing standardized testing methods for wireless devices. A key element in such testing is the accurate evaluation of radiated performance while operating in the respective communications. Such testing is commonly referred to as testing and is becoming a mandatory part of the product certiflcation required by most network operators. In those papers [1{8], facilities of mobile phone measurement have recently commissioned a spherical far-fleld measurement system (Fig. 2). In this paper describes a spherical antenna measurement system that addresses the challenges in testing antennas for wireless communications. It is a 3D system for measuring low gain antennas and is well matched for PDA Phone or wireless antenna testing. It has efiectively demonstrated testing and characterization of far-fleld performance, CTIA Over-The-Air (OTA) performance data, radiated power (EIRP), and sensitivity (EIS). In passive mode measurements of antennas are performed by a vector network analyzer. It provides radiation pattern data in any polarization, as well as antenna e‐ciency. In system mode measurements, commonly referred to as OTA Performance Testing, of mobile phones and other cellular terminals can be performed. It is connected to a radio communications tester (Agilent 8960). The communications tester sets up a phone call through the 3D polarization scanning, enabling measurements of radiated transmitter power (EIRP) and receiver sensitivity (EIS) over the entire spherical measurement surface surrounding the mobile phone.

Guan-Yu Chen

Papers

The Wideband Marchand Balun Transition Design

The 3D Far-Field Antenna Measurement Technology for Radiation Efficiency, Mean Effective Gain and Diversity Antenna Operation

Flexible printed circuit board (FPC) antennas for mobile phone operation

A Novel On-Glass Antenna for Mobile Handset Applications

Small Antenna Measurement Facilities